USHGA Ground Skimmer December 1975 by US Hang Gliding & Paragliding Association

I C range of air Directional stability. distribution on wing

HIGHER

control in rough

. Keel . . . . Sail Area (Plan Form)

19'

. 14' 178 sq. ft.

June '75

Ratio . .

. 30'

Billow per Side Wash Out . .

18 April '75

March '75

of the future will very bo similar to the Phoenix so why wait 'ti! thon? Contact your noarest Deltt1 Wing dealer or write for our brochure.

PHOENIX IV January '75

DIRECTORY EDITOR: Carol Boenish Price EDITOR: Rich Grigsby LAYOUT & DESIGN: Mark Allison EDITORIAL ASSISTANT: Sharon Grigsby

OFFICE STAFF MANAGER: Carol Velderrain Chon Aranda, Susan Mann, Ronda Leggett

USHGA OFFICERS PRESIDENT: Vern Roundtree VICE PRESIDENT: John Lake

GROUnn ,HlfflffllR mn,nz1n1

SECRETARY: John Harris TREASURER: Lloyd Licher

USHGA REGIONAL DIRECTORS REGION 1: Vern Roundtree, Gil Dodgen. REGION 2: l!ee Sterios, John Grace. REGION 3: Lloyd Licher, Dan Poynter, John Lake, Chris Wills. REGION 4: Don Beuch. REGION 5: Gary Osaba. REGION 6: Darryl Smith. REGION 7: Mike Z1askas. REGION 8: Tom Peghiny, Dan Chapman. REGION 9: Vic Powell, Chuck Slusarczyk. REGION 10: John Harris. REGION 11: Dave Broyles. DIRECTORS-AT-LARGE REGION 1: Bill Johnson. REGION 3: Kaz Delisse. REGION 8: Al Mulazzi. REGION 9·. Dennis Pagen. REGION 10: Harry Robb. REGION 11: John White.

CONSUMER ADVISORY: GROUND SKIMMER and USHGA, Inc. do not endorse or take any responsibility for the products advertised or mentioned within these pages. Please consult the HMA or pilots and dealers in your area.

ISSUE NO. 35

DECEMBER, 1975

USHGA here presents its first hang glider directory - a comprehensive list of almost all gliders now active in the United States (and three foreign entries). Since this is our first edition, we have included significant ultralights from the recent past.

GROUND SKIMMER is published for hang gliding sport enthusiasts to create further interest in the sport, be a means of open communication and to

advance hang gliding methods and safety. Contributions are welcome. Anyone is invited to contribute articles, photos, and illustrations concerning hang gliding activities. lf the matenal is to be returned. a stamped, self-addressed return envelope must be en-

closed. GROUND SKIMMER reserves the right to edit contributions where necessary. The Associations and publication do not assume responsibility for the material or opinions of contributors. The only form of

monetary payment is $5 for the photograph pr illustration that is used on tihe front cover.

GROUND SKIMMER 1s published monthly by the United States Hang Girding Association, Inc. whose ma·11ing address is P.O. Box 66306, Los Angeles. Calif 90066 and whose offices are located at 11312V2 Venice Blvd., Los Angeles, Calif. 90066; telephone (213) 390-3065. Second-class postage is paid at Los Angeles, Calif. GROUND SKIMMER is printed by Sinclair Printing & Litho, Alhambra, Calif. Subscription 1s available only as part of membership in USHGA, a non-profit, member-controlled educational and scientific organizal1on dedicated to exploring all facets of

fuel-less, self-launched ultralight flight. Membership 1s open to anyone interested 1n this realm of night. Dues

are $10 per year ($11 for foreign addresses) of which $4 are designated for subscrrption to GROUND SKIMMER. Changes of address should be sent six weeks 1n advance, including name, USHGA memberst11p number, previous and new address, and a mailing label from a recent issue.

" .. and he knew with practiced ease that he was not bone and feather but a perfect idea of freedom and flight, limited by nothing at all." from Jonathan Livingston Seagull_ Photo by Richard Hovey

• QvlE:5TIOr-J & ANSWERS

FOR EACH ll'J5TRLACTIOl\l PERIOD.

RI c:::>GrE: THE:'.RMAL :::'30A!s:'.lNG· c::.aoSSU.JINt::> ·rAKE OFF

HAl'J& 1 TO 4 E)<PLA'!JJ>mot-J5 Lo& 5,.EP l3Y 5TEP ILLLA'::ff.RA:noN5

1+J £:YL\Df£5

DECEMBER 1975

air· joins a

was ere·

flight QLfrte probably

Cross memis the breakdown only to

The Kestrel wm not designed for penetrating hurricanes, but who needs to do that anymore? The Kestrel lets you soar now in light, safe winds with its excellent performance (estimated max UD-7:1, minimum sink""""250 FPM) matched hy excellent stabil'lty and dive recoverability. Thesa arn nor idle claims as can be shown by throe out of the top four places in the open class at the 1975 U.S. Nationals, and by some vBry radical test flying by two of those top placers Tom l'eghiny and Burke Ewing. How about 90° full·break stalls with a following 180° pitch down before initiating recovery? Or spin entries with a 3/4 turn? Or full 90° side slips? You bet that's hairy (we recommend aqainst stunting in any kind of hang glider), but Burke and Tom felt they had to take the risk as professionals to show you, the customer, that you can have a safo, high·performance design without any trieks. They found that the l<estrnl exceeded their expectations for stabil· ity and dive recovrirability. When put into a divn, tlw Kestrel will not stay in that attitude, but rnther, hands off, will return to normal, trimmed·out flying speed. Now that's stability! Also, by the vvay, because of the unique "bubble" and sail desinn, the l<estrel's wing can· not "streamer" in a luffing situation.

Sports places as much emphasis on quality dealers as on quality eq11ipment at a decent price" We depend on these good people to Conneclieul Bloomfield·-Bruco Von Kummer, (203) 242-0501, 872<l5300 Milford--Southern Connecticut School of Hang Gliding; Harry & Kosch; (203) 877-0294, 255-4071 Maine Bet11el--Gliders of Mt. Abraham; ,Joe Robiller; (207) 824·2183 Kingfield .. Sky Truckin', Inc.; Paul Laliberte; 2B2-5531, 237,2365 Massachuse!ls Amherst-·ECO Stewart; (413) Centerville--Cape Wind, Dana Littlefield; (61 T71 ·0351 0 Ed

Glider Supplies;

represenl our products and to help you, the customer. All Sky Sports dealers offer instruction. Many carry parts, books and magazines, and m:cessories. And some offer ot11er brands of equipment (we don't mind). So contact tlie nearest one about whatever you need" Make sure to compare quality and price .. we think you'll like Sky Sports.

Terry Sweeney; (603) 77 4·37000 Nort11 Conway-·Sky People, Inc"; Don McCabe, (603) 356-5872 0 New York Farmingville, Long lsland.Dixson's Glider Supplies; Betty Dixson, (516) 588-7562 Pittsford-"·Rochostor Hang Gliders; Tom Fruitiger; (716)

:ie1.oon,

Saratoga Corp.; 5B7·19570 Schonectady,,Glidor Barn, Kirn Roberts; ([\18) 35'.S-2257 North Carolina Asheville·-Freodom Sports; Pierre & Stove, (704) 274-4060111110 Air Aviation; Don Nocito, (215) 45g,K.I.LE.IIIIO State Collego--Clean Air Aviation;

Dennis Pagen, (814) 234·"1967 Rhode Island Providonce--Wings N ; Al Ardonto; (401) 274·8050 Vermont NewtJury.,Groon Mountain Sky Sports, Carl Blaisdell; (603) 7B7-6315 0 International Canada.,miniSport, 1 Founclry St., Dundas, Ontario L9H 5G1; (416) 627,0672; ,John FarnanlllO West Germany .. Sky Sports International, Box 123, Garrnisch; Miko HarkorO lroland--Morelli Boats, 12 Capel SL, Dublin 1, Tony Morelli Camps, Beethovon Barcelona (6), 2590985 1111 hang gliding shop OKestrol demonstrator

Dave Kilbourne with his nd. CREDIT: W. (ContinuPd from page two)

I!*

t • Custom-colored sail • Vinyl-coated, 7 x 7, stainless cable wires

MANUFACTURING/SALES

1'.1

N (

822 W. KAHL LA /\V Of'iANC3 , CA. 926G7 T,ilophorw • ( 714)9D7 ·0701 Memher of flanglidcr

THESE OUALIF!ED SOLO FLIGHT DEALE!?S ARE AVAILABLE FOR SAL CALL Tl/EM FOR ANSWERS TO YOU!? OUESTIONS.

DEALER INQUIRIES INVITED

AND SERVICE

ESCAPE COUNTRY Jim f{obinson Robinson Ranch California 92678

EARBOB FERRY MARINA

SAIL WING, INC. Al Waddill 1116 Eighth Street Manhattan !:leach. California 902fl(5 1213) 372,2119

SOLO OF OREGON

SOLO OF SAN CLEMENTE Jan Davis 400·13 Pepper Lane California 92672

up.rr co.

MISSISSIPPI VALLEY HANG GLIDER Riclrnrd 7M S. 2nd Clinton, Iowa 52732 1319) 242,6178

SOLO OF HOUSTOIIJ Rohen

am' specifirntions. 11/e rnrry ON II/IN!) 11 large i111'ul/or1' of',1·1and·

:l265W.

arc/ f)IIYIS ancl Sll/Jf)lics.

Ma1111fact11rers Assoc,;,tion

Manufacturers of QUALITY kites and components

• Anodized tubing II f1evolutionarv new Sailfeather • Solid construction 1% o.d. x .058 main spars, 1 x 083 control bar

SOLO OF BROWNSVILLE Chuck Weiler

Oklahoma 74352

38012 HANG GLIDER SHOP Jack Britton

135'1

Beach Blvd. California 9063'1 1074

!Is a 11111nufacturcrof11u11/ity glider hardware and .1vfiware we will he /,af)py to quote quant it)' /Jl'iccs of

p/1011c F>r quotes.

Write or

, , , 155

, , SY,, ft. , , . , , , 23:i, 0 16:i, 0 (trailing ,, , ,,,,.,, . 65

130200 lb, , . 120 Princeton Sailwing Str11cl mill rnaterials: aluminum stainless cable, 6 mil polyethylene

OTHER . Bob Woods and ,J,C, Pemberton April, 1974 & tear,down time,,,, 14 min, & still active , , , , , , . , , . , , . , , , . I

The Woods Wing, winm!r of the 1974 Ultralitc Organization's desinn compelition, is a that folds into rough, and can be in 14 minutes, It is !c1unched in manner which does not require the pilot lo support the weiBht of the

PERFORMANCE

GRIFFIN SPECIFICATIONS 34 fL

15S sq, ft. , 7, 12 SY,, fL (root}, 3:1;, fL (tips)

''' . . . . 23° . , , , , 55 130 200 lb, lhan 100

PERFORMANCE .. , , . 9,5@ 22

3,25 fps (a) 19 16 mph

GROUND SKIMMER

OTHER Bob Woods . 1 (so far) , .. , .. , , , JO min.

trailinn ed!Je with 2,dimensional low model at San Die!Jo ful to run lhe tests at a 750,000 to simulate the approximate 1~011n1,lri's number during actual fli,1hL The results quite so Bob built a full,scille has made controlled mc,asur<!menl:s

ALBATROSS SAILS Box 192 California Solana 755-7000

Aspect ratio . Leading edfie . Keel ........ . Nose angle . . . Sail billow Designer ..

... 29 ft. 187 sq. ft. . ,1.52 19 ft. 14 ft. . 100"

Torn Price

. 26.75 ft. 206 sq. ft. . . . 3.47 .... 18.9 IL 14.62 ft.

Keel Nose angle Sail billow Designer . Roach

.... 90° . 3.6° . Torn Price battens; first flew in October, 1975

First flew in July, 1974 Span . . . . . . . . . . . . . . . . . . . . . . . . . . 23.6 ft. Area . . . . . . . . . . . . . . . . . . . . 190 ft. Aspect ratio . . . . . . . . . . . . 18 ft. Leading edge . . . . . . . . . l7 ft. Keel. . .. 82° Nose angle .... :l.'75° Sail billow .. Torn Price Designer.

..................... 25.7 ft. . . . . . . . . . . . . . . . . . . . . . 19:l ft. Aspect ratio. . . . . . . . . . . . . . . . . . . . . . 3.42 19 ft. LeadinfJ edge . . . . . . . . . . . . Keel.. . . . . . . . . . . . . . . . . . . . . . . 16 ft. Nc>se angle ... , . . . . . . . . . . . . . . . . . . ... 85(') Sail billow. . . . . . . . . . . . . . . . . . . . . . . 3.5° Designer . . . . . . . . . . .

ft. ... 204 sq. ft. Aspect raho ..... Leading edge . . . . . . Keel . . . . Nose angle Sail billow.

.. 18 fL . 13 ft. . . 105°

Designed by Wink Seville. It first flew in June, 1974. lt had curved leading cambered sail, roach at the tips with battens. .......... 29 ft ... 184 sq. ft. . . . . . . . . . . . 4.57 18 ft. M ft.

Aspect ratio . . . . Leading Keel. Nose angle .. . Sail billow .. . Truncated tip . . . . Hollow in sail .. Quarferchord sweep Mean chord length ...... . First flown . . . Designed by California C3liders

. . . .. Torn

Span . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 26.9 ft. Area . . .. l 87 sq. ft. ratio . . . . . . . . . . . . . .... 3.86 edge . . .. . .. .. . .. . .. .. l 9 ft. .. . .. 15 ft. Keel .. Nose angle. . . 90° Sail billow .. Designer.. . . . . . . . . . . . . . . . Tom Price

102° 3.2fi 0

ft. . .. 18% . 30.S .. 6.3 ft. April, 1975 Albatross Sails. 0

Cambered sc1il, first flown in July, 1974

. . . . . . . . . . . . . . . . . . . . . . . . . 28.3 ft. .... 20:1 ft. ratio........... . . . . . . . . . . . . 3.93 edge . . . . . . . . . . . . . . . . . 20 ft. Keel.... . . . . . . . . . . . . . . . . . . . ft. Nose c1ngle . . . . . . . . . . . . . . . . . . . . . . . . . .. 90° Sail billow . . . . . . . . . . . . . . . . . . . . .... 3° Designer.. . . . . . . . . . . . . . . . . . . Tom Price

Aspect ratio ... Leading edge . . . Keel . . . . . . Nose angle. Sail billow ..... Desiriner . . . . .

.... 28.8 ft. . 244 sq. ft. . 3.4 . 20.36 ft. . 18.32 fL

.. 90° Torn Price

It first flew in September, 1975

Deep scallop; 20% hollow 28.37 ft. 168 sq. ft. ...... 4.79 ..... 18 ft. . ........ 14 ft.

.... .....

. . ........ . ... . .. .... .. . .. . ft. . . . . . . ............. 181 sq. ft. Aspect ratio. ...................... 4.39 Leading edge , . . . . . . . . . . . . . . . . . . . . . 19 ft. .................. 14 ft. Keel .. Nose annle. . . . . . . . . . . . . . . . . . . . . . . . . 96° Sail billow . . . . . . . . . . . . . . . . . . . . . . . 3° Tom Price Designer . . . . . . . . . . Cambered sail b. Exactly the same as the one above except with curved leading ed,ies that made it less stable but with more performance

Aspect ratio Leading edgr1 . Kciel . Nose angle .. Sail billow . . Truncated lip . Hollow sail . . . Quarterchord Mean chord length

. .....•.... 104°

............... 3" . 2.25 ft. . . . . . . . 25(X) . . . 29.S 0 ...... 5.92 ft.

Cambernd cambered keel; first flown in ,Tum:, 1975. Designed by California C3liders and Albatross

DECEMBER 197S

. . . . . . . . . . . . . 29 fl. 170 sq. ft. .•. '' .... ' .... 11.9-S

l8 ft.

... '.'.'' .. '. ' .

.. , ....... 12 ft. ... ' . '. . . [(]60 .. . . . . . . . . . . 2.75"

Nose angle billow. Tnmcilted Hollow in

ft. . . . . . . 19%

Q1iarterchord swuep

30° .. 5.862 ft.

Mean chord length

Tom Price

c21mbm·1?cl sail; first flown August, 1975 30 ft.

. 147 sq. rt.

Aspec1 rntio . Lcarlinri edge .

. . . . 30.3 fl. 170 ft.

ft. . ]OS ft.

Keel .. fl. 106° ft.

:300

ft.

Cambered sail; ,lune, 1975

Tom Price C2,mlier·ccl s,,il;

l )6°

Nose angle, Sail billow. Truncated Hollow in Quarterc:hord sweep Mean chord lenqth Designer

19 fl.

flown in May,

cambered

ft. 2~%

1.9 ft. Torn

keel;

first

flown

:mrt. .

170 sq. ft. 5.29 . 18 ft. 13 ft.

' .. 108° fl. 2'1% .... 28.6° [i.667 ft. Tom Price cambered

keel;

first

flown

31 ft. 180 S(]. fl.

Spiln

Area

5.:31\

ratio .. edge.

19 ft.

Keel ... .......... Sail billow. Truncated Hollow in Quarterchord Mean chord leni1lh .. flown

165

12 ft.

Keel

106°

Nose angle Sail billow.

ft. ft.

ft. 10 5 {t

... 19.1%

30.s'' . 5.8 ft.

Menn chord lennth Firsl flown Desinner.

. ,luly, 1975 Tom Price

................. 32 ft. .... 170 sq. fl. ........... 6 ......... 19.5 ft. .. 12 ft.

] 100

Tnmcatc,d tip Hollow in sail . Qumterchord sweep

.... 175 ft WX,

Meiln chord length

.. . .. s.:.lft. . Tom Price

sail; c<1mbered May, 197!i

28.5"

keel;

first

flown

. August, 197:i Saville

36.5 ft

Span . . . . . . . . . . .

185

Area .

. 7.2 Aspect ratio ..... 22 fl Leading edge . . . . .. . 8.83 ft. Keel ...................... . Nose angle.... . . . . . . . . . ........ l 12.3° Sail billow . . . ........... . . . . . . . . . . ... 1.83 ft. Truncated tip ......... October, 1975 First flown . . . . . Charles Baughman Designer ..... .

Californians add 6'Xi sales tax Men's sizes

M, L, XL orange

Send to: USIJGA, Box 66306, Los

CA 90066

Bill DE[TA WING P.O. Box 483 Van California 91408 785-2474 SKYTREK

Span . . . . . . . . . . . . . . . . . . . Area .......... . Aspect ratio . . . . . . . . . . . . .. . Leading edge . . . . . Keel . . . . . . . . .

ft. . . 200 sq. ft.

. . . . ... . . ........... .

. 3.24

18 ft. 16 ft.

Nose angle . . . . Sail billow .. . Pilot weight Desiqner.

. ... 90° . ''. 4.5° . . . l 20· 180 lb. (soaring) 135·210 lb. (towing) . Dick Boone

The Skyt rek glider designed for both soarin and towing. It features reversible wires for seated or prone flyinq, cambered keel, reinforced leading ed1ies for zero winq warp, battens on low kites, and Mylar coated sailcloth.

.. 30 ft. Span . . . . . . . . . . . . . . . . . . 205 sq. ft. Area ............. . . .. 4 .46 Aspect ratio . . . . . . . . . . . . . . . 19.5 ft. Leading edge . . ... . 17 ft. Keel.. . . . . . . .. . Leading edge .. . .. .............. 19.5 ft. Keel . . . . . . . . . . . . . . . . 17 ft. Nose angle . . . . . . . . . . . . .............. 95.5° Sail billow.. . . . . . . . . . . . . . . . . . . . . . . 4° Pilot weight . . . . . . . . . . . . 140·350 lb. Desiiiner . . . . . . . . . . . . . . . . . . . Dick Boone

Th,i Phoenix SX features reversible wires for camber control leadinq reinforced leading edries, M Jar coaled sailcloth.

DECEMBER 1975

or and come with on exhmsive instruclfon book. A detailed brochure with soil cloth color ond location of our nearest available for one dollar to cover posi"oge and hondl flier: Mike Mitchell

HMA stondords.

Ill,

Sink~350fpm

all the features of the Phoenix

PHOENIX XL

l%sq. J7 fl. 17 fl. 3 fl.

Leadin(J Keel

billow. Pilot weight

. . . . . . . . 32.5 ll. . ....... 230 sq. fl. ............ 4[i 21 ft. .. ......... 17 ft. . . . . ' . 100° ' . . . . ' .. .. . 4.25° 200·450 lb. (tandem)

Designer.

. ....... Dick Boerne

Aspect ratio, Leilding edge .

Keel. Nose angle

Dick Boone

(experimental)

The Phoenix XL tandem flyinrJ.

ft . t) 19.5 fl.

edge.

Keel.

[4 /1.

Nose a.nglP

100°

billow .. Dick Boone

Designer

V, dtcsiqned for pn)c1t1clinn glider. It IMs a special pockt:'I lh,11 is ram airfilled with offers ca1nhernd JeacJmq e,dqcis. wint.l

keet and rev<'rs1t,Je wires for

wires,

sealr,d or pron<' llyinfJ.

. . . . . . . . . . . . . . . 30 fl ......... 140 sq. ft. ratio ...... . . . . . . . . . . . . . . . . . 6.4 Leadinq edge . ' l8 ft. Span.

64 pages, several for "competition" Handy 4 % x 7 pocket size Durable, uold flexible covers Detachable "First Flight Certifieate"

Aviation Book Company otfers the widest selection of books on ultralight flinl11 for both the pilot & builder . plus ovor 1000 additional books on aviation subjects. (Discounts alto\ivnd to dealers) HANG GLIDING: Basic Hundbook of by Poynter $5.95; Hardbound HANG FLIGHT: Instruction Manual for and lntorrnediate by Adleson & Williums $3.25 GUIDE TO ROGALLO FLIGHT by Skinner & Finley $2.50 FLY: Tho Book of by Carrier "''T"""'· Tow Launched Hang Glid in£J by Poynter $3.95 HANG GLIDING: FlyinsJnst Flyinf.J 11y Dndera. All color cnlebration book. $9.95; Hardbound $14.50 COMPLETE BOOK OF HANG GLIDING by Halacy. $4.95; Hard bound $7.95 HANG GLIDING HANDBOOI(: Fly Like a Bird. by Siposs. $5.95; HurdbouncJ: $8.95 DEL TA: llang Gliding Handbook by Dcsfuyns. $5.95 HANG GLIDING by Doyle. History, Color Photos. $3.95

. . . . . . . . . . 9 ft. Sail billow.

experts to be the available.

designed specifically for

]8()

ratio.

best

' .. '.'.'.' 116° . . . . ' 10 Dick Boone

This experimental de,;1m1 o!iler·s cal1'1bercdlcading and defined in the tips by battens.

Address Ci1y, Si. ZIP

(Minimum ordor $5.00)

.. 32.5 fl.

• . . . . 2B ft. ratio

edge. !{en! .. Nose angle.

. . . . . . . . . . . . 150 fj .' . . . . . . .. 4. .. . . . . . . . 18 ft. . . 14.5 ft. . .. ' ..... ' ' .. 100°

Sail billow.

165 sq. ft. Asp('ct

Leading edge Keel .. Nose angle,

.. l J0.]90 lb. 100 170 lh. r,,o,•1l'inol

Designer ...

Dick Boone

. . . . . 6.4 ...... 19.5 fl. , .. , . . . . . 12 fl. ' !10° ' ........ '..

(:ha roe flANl<AMrnlCARD II

Exp. Date

MASTERCHARGF ll

billow. Desi,incr ...

Pilot weight

pur book tor handlinn.

Dick Bocme

This configunition offers many of the Silme lea· tures predecessor, the first Skychild.

555 W. Glenoaks Blvd., Glendale, Calif. 91202 (Aviation Bookstore at this same address)

BIRD BUILDERS ???? i:. 11n Pacific 1

M,ililJu, California 456-6946

ARIES SPECIFICATIONS ft. ..... , 143 sq. fL ratio .... . '10 . 38 ft. edge . . . . . . . . . . 4Y:, :i ft. root taperin,J to tip .. . lb. weigbt ....... , .. 100,200 lb. . . . .... 0.9,l.S lb./sq. lt. . . . . . . . . . 250 TK7315 modified wood, fibergloss, foam, aliminum

PERFORMANCE

OTHER Jerern K lclutcheson " " l

BLACKBIRD

having

SPECIFICATIONS ft.

. 145

. ... ...

ft. 5.6

....... 7 ft. (root), 3 ft. (tip) . . . . . . . . 75 lb. . . . . . . . . . . . . . . . . . . . . . . . 1. 7 psf

weight .

OTHER respect to promisc,d to keep

. . . . . . . . . . ,John H. Anderson . . . . . . . . . . Sylvia Anderson alternate pilot . . . . . . . . Wyn Nielsen

Sail billow .

. . . . . . . . , . . . . 4° Manhours required. . . . . . . . . , . . .... 20 Structural materials: 606l·T6 aluminum; all stainless rimiin!1; Dacron.

CLOUD MEN GUDERCRAFT CORP. 905 Church Street Na!'.h•vme. Tennessee 37203

PERFORMANCE Max , . sink . . . . . Stall speed . . . .. . Controllabilily at min. speed: excellent

SPECIFICATIONS

OTHER , , , , . , , ......... , . . . . . . l 43,233

ft.

ratio . . . . . . . . . . . , , , ·, , , · · · edge . . . . . . . . . . . . . . . . . 1fi. 19 ft. . . . . . . . . . . . . . . . . . . . .. 15·19 ft. wc,ight . .. .. . . .. .. .. .. 32,38 lb. . . . . . . . . . . 90 230 lb. "" ...... 0.9,1.1 ft.

Designer from NASA studies (kits) 400 (ready.to.fly) No. built: 30 (plans), No. still active . . .... . . . . . . . . 630 This standard Ros,;1110 features an adjustable shoulder on the control bar 11ml winq 19 foot !1iiders only). A stainless steel (18 the control bar to fold up into

DECEMBER 1975

This 2nd

hang ,Jlider is still in the midst 6 month test program but should be in rmxltJCliion some time in November, 1975. (Price: Designer Alex J. comments that the long keel is necessary of the non· symmetrical hyperbolic spiral deep scallop in the sail. the is also designing a brnnd new for inte>rmediilte and expert Euror1e2,n pilots which capable of soming the exlremely small dunes of Holland's beaches. Sonw of the Shadow's specs include: span 27.85f!.; 225 sq. ft.; aspect ratio 3.14; leading edge 20 ft.; keel 20 ft.; nose 906; 5 oz. Dacron.

.,,,, , .. fL 188 sq. ft. , .. , .. . . .. 2. 8:i . 16.11 ft. . . . . . . . . . .. , , . 16.4 ft. . , ...... 30 lb. 1:37 r!b lb .. 0.91.l lb./sq. ft.

Aspecl rn,tio .. LeadintJ edrie Keel.,,, Empty Pilot Wing Nose angle. billow,, .. Structural malerinls: Dutch aluminum equivalent to 6061 aluminum, 1.3 inch tubes.

The Coala JIB was by Alex J. Eniwl for the flyer and comes complete with Its perforrmmce is similar to that of a 1'/-foot, 80° nose standard Rog,,llo

JU SOARWING SPECIFICATIONS . .. 3Ll2 fl. . 215 sq. ft. 4.5 20 IL l'/ ft. 42. lb. 103°

Aspecl ratio . Leading edge Keel Emply Wl!ighl Nose angle . , Sail billow,,.

. .,... ..

32 ft. WI

PERFORMANCE

ft.

.... 6 ft. (root), 3 ft. (tip) .. 70 lb ]40220 lb. 0.9-1.b psf , ... 130° titanium, aluminum, Dacron

Max .. , . . , , .... 8 (<i) approx. 2[i rnph sink . . Unknown but low Si all characteristics: Could enter slow 'mush or recover rapidl_y from a sharp slall Conlrollabilit_y at mi11. speeds: ver_y sensitive lo tip rudders al slow speed. Airfoil: Upper surface of #38'/ changing to the same airfoil at the wing tips. The

WINGS WATER SKI TOW KITE Elland Road West Yorks Great Britain

MINIFLYER SPECIFICATIONS Leadinq Edge l<eel. , , . Arca . , . , , ..

, ... ]4V,; ft. . , . , . , , , . , , .. 14V,; fl. . , .. , , , , 150 sq. ft.

Struct nral materials: 1 V,;" x .058" 6063-T832 aluminum. All materials to HMA Ill specications.

PERFORMANCE Max, speed

Empty Pilol Wings loadings Nose anqle .. Sail billow . . .

GROUND SKIMMER

7fj 15.518.5 ft. 15.5· 18. 5 11 .. 34 .. ij5 lb. 90-240 lb. 0.89, 1.24 3.5°

. , .. , . . , . , . 4.5 @l 19·21 mph ]4.]5 mph

wing, becdme !he monoplane winn hang and proved the of the monoplane approach. Frank incorporated unique features into his inclndin'l titanium in !he structure and tip th;i1 swing up on contact with the ground. Frank's original glider is still intact but not being flown. One other is known to have been built from plans for the model of the full.size winn

Nose c,ngle.

' ' ' 82°

Sail billow ... Empty weight

'' ' ' 40 . 46 lb.

The miniflyer, designed by Roger Dilley, comes complete with swiug seal, boat release, fnll flo· talion and a 100-foot lowline these are part of the total weight of 46 While rnost tow kites am (the pilot's release on control and the spotter's release in the the Miniflyer featnres a foot non release bridle which releases only at the boat. Apparently this is a against tow flyer's inadvertantly an awk· ward moment.

Street

. . . . . . .. 19.5,25.83 ft. ..... 143,260 sq. ft.

nrr:r1nrP. l;am,ornia 90501

328-9100

Aspect ratio .. Leading edge ...... . Keel ............. . Empty Pilot

. ............ 15 20 ft. . .......... 1s.20 ft. ..... 3546 lb. . . . . . . . . . 100·260 lb . . . . . . . 0.9 l.l psf M1:111hornrs required if kil . . . . . . . . . . . . . . . 5 Nose angle . . . . . . . . . . . . . . . . . . ... 80° billow ............. , · · · Load factor . . . . . ....... +5 Structural materials: 606l·T6 aluminum and Dacron

PERFORMANCE ot wing looding of 1

Max sink Stall speed .

.... 4.5 (al 24

... 7 fps ...

Mushing stall

.18 lS,16 mph

The original Flexi,Flier the culmination of intense study and testing by Dick Eipper back in 1971. When l:q:Jper·ronmanc,?, Inc. was formed, the Flexi,Flier the first commer· cially produced foot launched able in the United

acr:ep•ted items stc1bilized Dc1cron sc1ilc!oth, aircn,11.qua111v materials, and quiet, wrinkle·

SPECIFICATIONS

Span.. . . . . . . . . . . . . . . . . . . . 38.6 ft. Area . . . . . . . . . . . . . . . . . . . . . . 260 sq. ft. ratio . . . . . ...... . edge. . . . . . . . . . . . . . . . . . .. 20 ft. Keel... . .. .... ..... ft. Empty ... . ... . . . 50 lb. Pilot ......... . lS0·200 lb. Wing . .. .. . .. .. . 0.81.0 Nose angle . . 150° Sail billow ........................... . Load factor . . . . . . . . . . . . . . . .. Structural materials: 6061,T6 alurninum and Dacron

David Cronk . . 100 ... 20

relined of the Cron· developed late in 1971 David time when almost han:J than 100 feet held in high

PERFORMANCE cit wing lociding o/ 0.9 Max . sink . .. .... 4.17 Stall ch,,racteristics: gently through

PERFORMANCE at wing loading of 1.45

VI Max

SPECIFICATIONS ....................... 33 ft. . . . . . . . . . . . . . ...... 170 sq. ft. ratio . . . . . . . . . . . . . . . . . . . . . . . . 6.4 edge . . . . . . . . . . . . 18 ft. Keel..... . . . . . . . . . . . . . . . . . ... 8 ft. Empty weight . . . . . . . . . . . . . . ....... 45 lb. Nose angle . . . . . . . . . . . . . . . . . . . ..... 140° Sail billow . . . . . . . . . . . . . . . . . . . . . . . . . 1° Structural materials: 6061 · T6 aluminum, wooden doweling & Dacron

sink

Stall characteristics: mushy; through approx. 20° Devel,:ip(0,d in the fall of 1974, the Cronkite Vl ei!lh! fuUy shaped battens per side, as well

control.

controllable mdder. Several stages of modifi· but in end, performance inadequate to justify the

KITE

.............. 23.5 f1 .............. 150 sq. f1. .................... 3.7 . . . . . . . . . . . . . . . . . . 18 ft. . . . . . . . . . . . . . . . . 14 f1. ..................... 34 lb. . .. ]40 lb. . . . . . . . . . . .... 1.17 psf 80° ... . ..... 3.5° 6061 T6 aluminum and

Designed and constructed by Dick Eipper in 1972, this machine was an of Dave Kilbourne's cylindrical Rogallo. The had a fast flying speed with very flat for the time. Flown regulnrly by Dick for over a year, the Superkite is now in retirement.

PERFORMANCE I /D Max . . . . . . . . . . . . . . . . . . . 6 @ 26 mph Min. sink ... 5.83 fps 22 mph Stall characteristics: sharp stall (g, 22 mph Con1rollability a1 min. speed: minimal

SPECIFICATIONS

@ 24 mph . . . . . . . 5.83 15-16

The 19 17 was introduced by Eipper-Formance in the fall of 1974 as ,3lider that offered slightly improved performance and control over the stan· dard Flexi-Flier. An off-the-shelf 19 x 17 helped make David Muehl 1975 National Champion at the USHGAsanctioned meet in North Carolina.

Span . . . . . . . . . . . . . . . . . . . . . . . . . . . 25'7'' Area . . . . . . . . . . . . . . . . . ....... 210 sq. ft. Aspect ratio... . . . . . . . . . . . . . . . .... 3 Leading edge . . . . . . . . . . . . . . . . . . . . . . 19 ft. Keel ...................... , . . . . . . 17 ft. Empty weight . . . . . . . . . . ........... 40 lb. Pilot wei,3ht . . . . . . . . . . . . . . . . . . 150,185 lb. Wing loadin,3 . . . . . . . . . . . . . . . . . . 0. 9· 1.1 psf Nose au,3le . . . . . . . . . . . . . . . . . . ........ 85° Sail billow. . . . . . . . . . . . . . . . . .. 3.5° Load factor . . . . . . . . . . . . . . . . . ..... +5"G's" Structural materials: 606l-T6 aluminurn and Dacron

PEHFOHMANCE with wing loadin,3 of U L/D Max . . . . . . . . . . . . . . . . . 6 @ 22 mph Min. sink . . . . . . . . . . . . ... 5 fps @ l 8 mph Stall speed . . . . . . . . . . . . . . . . . 16 mph ... 29.5 ft . . 190 sq. ft. . 4.6 . . . . . . . . . . . . . . 18 /1. 14 ft. . . . . . . . . . . . . . . 38 lb. . . . .. . .. .. 135--190 lb. . . . . . . . . . . . . 0.9-1.2 psf

The Cumulus I was the first in a series of high performanrn flexible striving to attain the hi,3hest while acceptable stability and controllability . was constructed in the foll of 1974 by Cronk and Michael Huetter. Flight tests and countless modifications found it to be a stable, performer but the performance did not the added complexity of the shaped leadin,3 ed!)es and keel.

...... 110° . . . . . . . . • . . . . . +!5 "Ci 's" 6061aluminum, wooden

m SPECIFICATIONS

OTHER .. David Cronk & Mike Huetter .. . . . . .. .. . .. .. . .. . .. . "1 The "!II" is essentially a Cumulus I with 2 foot square tips added. and stabi· lily wern quite ,3ood not justify the com· of the airframe.

GHOUND SKIMMER

Span . . . . . . . . . . . . . . . . . . . . . .... 29.5 It. Area ........................... 195 sq. ft. Aspect ratio. . . . . . . . . . . . . . . . . . . . . . . . 4.5 Leadin,J edge . . . . . . . . . . . . . . . . . . . . . . 18 ft. Keel. . . . . . . . . . . . . . . . . . . . . ....... 13.fi ft. Empty 1.vei,3ht . . . . . . . . . . . . . . . .... 40 lb . Nose angle . . . . . . . . . . . . . . . . . . . . ... , 110 ° Sail billow . . . . . . . . . . . . . . . . . . . . . . . . . . . 3° Load foctor .. , . . . . . . ... , .. , . . . . . +4 "G's" Structural materials: 6061-T6 aluminum, wooden dowelin,3 & Dacron

CUMULUS V SPECIFICATIONS . . 29.S ft. .. 165 sq. ft. ratio ... edge . . . . . . . . 18 ft. Keel. . . . . . . . . . . . . . . . . . . . . . . . . . 12 It. Empty weight . . . . . . . . . . . . ..... , . . . 39 lb. tb0-200 lh. Pilot weiriht . . . . . . . . . . . . . . Wing loading . . . . . . . . . . . . . . L15-1.45 Nose angle . Sail billow.. . . ...... . .. 2.5° Load factor .. ..... ....... . 1-4 Structural materials: 2024-T3 aluminum, wooden doweling, & Dacron

1 t,ICdUllll~l

PERFORMANCE with wing loading of 1.2 L/D Max ................... 6-7 @) 25 Min. sink .............. 4.17 fps @l 18 Stall characteristics: Nose drops through a1 approx. lb 16 mph

OTHER

still active . .

David Cronk . . . . . . . . 2b ...... 2b

The "V" shaped thinwall and handlinii were found 1o be quite spectacular which

at this time has not been matched by any other flexible wing now rnanufactures pilots, two versions of 148 and 137 fkw in "V" to first place in the Championships held in Koessen, Austria.

PERFORMANCE at wing loading of 1.20

SPECIFICATIONS

Max . . . . . . . . . . ...... 7 (al 25 mph ..... 3.83 fps @l 17 mph sink Stall speed . . , ... 16 mph

. 31.25 IL ......... 162 ft. .... 6 ratio.. . edge ft. .. .. 10 ft. Keel . . . . . . . . . . . . . Empty weight . . .. . ... .39 lb. Pilot weight . . . . . . . . . . l50-190lb. l.17 1.41 psf Wing loadings .. Nose angle. . .......... 109° Sail billow tips . . . . . . . . . . . . . . . . . . . . . '.j ft. Stl·uctm·al materials: 2024-T3 aluminum, wooden doweling & Dacron

. . . . . . . . . . . . . . ...... David Cronk . , ...... l prototype still active .. . ..... .. .. ... 1 Greater were the

. . . , ... :Jl.25 ft. ...... 170 ft. ratio . . . . . . . . . . . . . . . . 75 edqe . . . . . . . ....... 19 ft. Keel. . .. , , ....... , ... 9 ft. Empty . . . . . . . . ... 42 lb. Pilot . . . . . 150 200 lb. Wing . . . . . . l.12,1.42 psf Nose angle . . . . . . . . 109° Sail billow. . . . . . . . . . , , . . . . ...... 2.5° Structural materials: 2024-T3 aluminum, wooden doweling Dacron The Cumulus VII utiliies bat1cms in an effort to increase and thus increase low stability stages of

PERFORMANCE Max sink

. '.' ' ... 7+ . .3 ..3-4.16 fps

SPECIFICATIONS . . . . 30 ft 116 sq. ft. 'J,8

. , . 45 lb. 140 190 lb. 1.6,2,0 psf single surface, 10% Structural materials: 6061·T6 aluminum ,md wood ribs

PERFORMANCE at wing lomling of Ul

Max . . , . . , 7 (al sink ... , 4.17 fps (,il 22 StAIIBuffotin!J and s1raiqht forward stall ill 18

r·!i,Jh!nilt,r was an atlernpt lo than·Rogallo perforrmmcc without excessive rifice to The machine performed plagued with luternl control problems. The wing was later mdted to i\ more conventional lnil and went on to lwrnme the Quicksilver, Hiqhtailer ured spoilerons and twin rudders.

OTHER 30 ft .. 116sq,fL

, Bob Lovejoy, David Cronk . !iOO

7.7:i

soo

No, still active

........ 56 lb. . . 130 180 lb loading ,

psf 40/iO

I Maniho1.1rs required for kit , Airfoil Lm,d factor Structural

silver was Being the first be1!er·ll'1iln·l<o,:;allo nerf'ormEir reasonable sm1pl!c11'y,

single surface, 12% materials:

6061

David Cronk Form,ance, Inc the Quicksilvr,r B, the first riqid qlider to be offered for sale in kit i\nd complete in the United States. 11 to be the standard of the industry for light. weiqht riqid inspiring a host of imitators, A Quicksilver was to b'/00 feet above takeoff Mnrk Clarkson of Arizona to claim the unoffi. world record altitude glider. Mark also flew 17 miles an 800-foot butte.

aluminum

al wing loading of 1,8

L/D

~i)

Min, sink Stall Stall ch,,ra,r:teristics: Butteii111q

(al 22

mph stall is a pproa throu9h approx al1itudc loss of approx,

SPECIFICATIONS 116

Aspect ratio , Empty

This unusual camird arrnngement was built by Bob in !he summer of 1973 and wos reluctar,tlv test flown by Pat Conniry PPrfr,rn,;n1cP was found to be and its stability could only be des unusuaL Flown only a few limes, the wos retired to the aHic.

Pilot Wing lo,Klin,1 Airfoil Structmal materials:

30 fl. ft. '/.8

S5 lb, 130,180 lb.

, . , ... 18 mph and weirc

For infonnation and t'eservations, write or call The Delta PO Box Van California 91408. Phone or 787-6600.

t'nmr,loto instructions on

into the instructor.

Structural

aluminum

1971\. very f1<1!, sliqhily reflexed winfJ section mated to hicih eel with fl<lt

o/ winq loading of l.'/5

. . . . . . . . 30 ft ..... ' .... J4[i ft. 6.2 . . . . . 60 lb. , 140 200 lb .

8 (a) fps (<i)

[./D Max Min. sink

Stall St,ill

mph mph mph

. 111.8 . , . 10(};\ sin~le 60(JJ.T6 aluminum

with wing looding of 1.6 (al

mph

1L] 7 fps (cil 20 mph

Mushy drops straight through

18 mph stall. Nose

rotio Quicksilvers were of J 97 4 1o provide in combination with low Sclmoe,:ler flew an "E" to firs! Niitionals, riqid wing class.

lb. 140 180 lb. '. 1.4 l.8 . 10'){, single aluminum

170

Aspce.ct ratio. Empty Pilot Winq Airfoil

34 ft. fl.

lb. 160 280 lb. .............. l I

Load

9%, sing)c, surface t·t!

Structural materials: 6061

,1]uminum

ut wing louc/ing of L4

LID Mcix , . Min. sink fps @ Still/ characteristics: Buffetinii, straii,ht mushy stall

. 34 ft , , , , , . , 136 sq. ft. .. , . , , .... 8.5 .... , ......... , 60 lb. 130 180 lb. .. . .. . .. . l.41.75 .... 6%, single surface, slight

.. ' . . '. ' +3.(, 606 l T6 aluminum

built /or Dick Boone in the fall

This large

the

qlider the latest in being desi1Jned in mid mi,m,Hil" competition mach· and large spoilers

the spoi/r,rs can angle to approximately much Pasier. This machine to first in the rigid w111gcl,1ssat the Telluride 1975 Invitational et·,arr1pior ships.

. Aspect ratio ..... Ernpty weight .. Pilot weight .. Wing loading ..

PERFORMANCE al wing landing of U1

L/D Max Min. sink Stall

. . . . .. 8 (11) mph 3.67 fps 20 mph mph

1.55

ft. ft.

... . . . lb. . .......... 140200 lb. . . . . . . . . . . l.2S-1.65 psf side

Designed back in David Cronk, this glider was inspired by Richard Conduit Condor. Quicksilver type semi-flexible: wing with tip rudders, excellent performance and handling were Flown extensively by Pal Conniry and David Cronk in 1973, the now retired and on display The Jiang Shop in

.~·

Aspect rntio Empty Pilot Wing Sweepback Airfoil ... aluminum

Aspect ri'ltio ... Leading edge . Keel Empty Pilot Nose Sail billow ....... .

Max Min. sink

100-215 lb.

. ........ 4 fps 18

1975

ft. sq. ft.

fl /1 . . . 44 lb 135 20S lb . . 0%134 .... 91°

(01 2/i mph . IJ.58 fps (o) l8 ' ]2

Both model;; of ext re1ncly st,1ble at slow spc,eds. tender.cv to spin; in fact, makes them

fl. sq. ft.

. 6.8 ... 21 fl. 12 ft. .. 4?, lb. 125180 lb .. 0.99 1.31 psi

960

NIMBUS

min. speed: see Cirrus 1

1& Desi,incr . . . ..... Rich Finley refined by Ruben Baca & Lorry Newman .... 19ft. ............. 39 lb. . . . . . . . . 150-210 lb. .... 0.8S-U3

still

St ruc1 ur<1l rnaterials: sarne

the lcadin11 edgr,s on the .049" w<1\l tubinq. Offered only in prone co:nli11uration, features cylindrical leading and quick set-up and take-down. has ,1 top speed of!, l mph in as measured by a Doppler timin,1 device.

Controllability at increased yaw

. '. '.'.'. 3" PERFORMANCE

ft. ft.

4.46 20 ft. 17 fl . . . . . . . . 38 lb. ..... 130 195 lb. ... 0.85,l.19

' " 2.9°

PERFORMANCE 6 (al 23 6.25 fps (al 17

, ,, ,.,,.,

.. .

6.8 (a) 24 mph 4.1'/ fps (al 17 mph 13 mph

L/D Max Min. sink

Keel. Ernpty Pilot Wing Nose ,m11le . Sail billow.

. 195

No. built

PERFORMANCE

]2 mph; not nt min. speed: increased yow;

Max

.........

. . . . .. 5.8 @ 22 mph

sink . . . . . . . , , , , . 6.67 fps @ 16 rnph 11 mph; not bod al min. speed: increased yaw;

19-18 SPECIFICATIONS ............... 27 ft. 205 ft.

Design modification

........... 19ft.

. . . . . . . . . . . . . . . ... 18 ft. .......•.•...•.....• 2,7 lb . ...... .......... ... 130-190lb . .. ... '" 0.81-1J3

PEHFORMANCE

. . . . . . 29 ft . ratio . . . . . D l,ISdUll!IJl edge

GROUND SKIMMER

. . 220 sq. {I. 3.82 ....... 20 ft.

. . . . . . . . . . . . ..... 5.8 @ 24 mph . ... 6.67 fps @ 17 mph . . . . . . 12 not bad

event of damage.

cont in tied

ft.

20-18 ft.

Emply weight . . . . 41 lb. . . 140,210 lb. Pilot weight .. Wing loadings , . 0.85 psi . . . . 90° Nose angle . , Sail billow ..... Structural materi21ls: aluminum and nylon

Designer Annilpolis No. built ...... . No. still active

4 17,20 ft. . 13,.16 fj

lb . . 92"

' 3" PERFORMANCE

to including full luff vertical ciives, The Windlord from all those maneuvers within approx· irnalely 50

FREE-FLIGHT Max

12424 Gladstone Avenue California 91342 a65-5607

7.S fps

4./i@ mph 18·22 mph 15 mph

.... excellent

Max ..... . !43,260 ft. .. " . . . I . . . . . 15·20 ft. ..... 1S·20 ft.

Min. sink Stall speed .

Controllability at rnin .

lb . . 80,260 lb. . . . . , . . . 80°

.058" aluminum airframe; 1" x .0:J8" rem·

conlrol bar and 24

Dacron.

Albiston

Bill ,Jones

I ( N

We'rH

We feel that it shouldn't into fastest cost yot1 features.

you an nation's

PERFORMANCE SPECIFICATIONS , Leading edue . . 15,20 ft. Keel. . . . . . . . . . . . . . . . . . . . . 15 20 ft. Empty weight 35-42 lb. Pilot weight . . . .. 100 265 lb. Nose angle . . , .. 8~: Sail billow . . . , .. , ,3 Structural materials: 6061-T6 or 6063-T832 l W' x .058" non-spliced airframe; 6061-T6 control bar & kingpost; vinyl coated 7 7 stainless steel ringing cables; Dacron.

SIERRA H

Keel .............. . Empty weight

206,227 fl. ...... 20 & :11 ft. 18'6" & 19'6" lb.

Pilot weight 130-225 lb. . . . . . . . . . . 90° Nose angle Sail billow. . . . . . . . . . . . . . . ....... . Structural materials: 6061,T6 Hf" x .058" non· spliced airframe; l" x .058" reinforced control bar kingpost; Dacron. PERFORMANCE L/D Max ..

by G.M. Sierra l, achieved a 'l~·mile thermal tures a patented Shur,lok quick spreader bar 1111d adjustabl,, and wing stiffeners. Designed for the advanced pilot fps (ril 19 mph Min. sink . . . . . . . Stall speed . . . . . . 1fi rnph Stall characteristics: minimum pitch down and smooth

SPECIFICATIONS Area Leading edge . . . . . . . .

!JD Max . . . 5.83 fps Min. sink mph Stall smooth brnak with minimum Stall pitch down and recovery.

26 mph

Designers .....

Albiston

Irv Alward

glider claimed out of the JO places in Advanced Standard Class at year's U.S. Nationals, and lst, 3rd & 4th places at the 1975 Spring Rocky Mountain Cham, pionships at Tellurid<J. The Sierra I! features deep scallop sail with 8,inch winf] pockets, Shur· lok quick release spreader bilr, wing posts, and 5,foot king posts. glider is trimmed out and flown from the 15()0.foot hill at Sylmar, Californit1. This

ICARUS V SPECIFICATIONS 32 ft. ......... , ................ 160

ft.

Man hours Maximum Structural materials: Aircrnft alumiuum and 4130 steel PERFORMANCE . . . . . . . 10 @ 20-22 mph L/D Max Min. sink . . . . . . . . . . . . .. 3 fps @ 18-20 mph mph Stall Stall ct1.,rartPnsl'1CS f]entle break with immediate recovery. excellent pitch Controllability at min. control with good response OTHER

u"""'""r ................. Taras Kiceniuk, Jr. . . . . . . . . . . . 52 (kits), 6 (ready.to·fly) still active ..... . The Icarus V recognized by many as the best performinf] hanfj glider to date. This tailless monoplane with "'"'""''""fo,·.t1 rudders has a very lar[Je and is extremely maneuverable. lt unassisted launch at any wind speed (includin,i zero) and has soared the cliffs of Pines in 5 winds. One memorable

thousands witnessed Taras in his V gain 3300 feet of altitude above the lfiOO.foot hill at Sylmar, while some 3.50 other flyers soared several thousand feet below him. The "V" hos also gained MOO feet from 300,foot hill. The Icarus V is the most without a

details on its available from Taras, or you Skimmer. Plans can buy the kit or complete glider from thfi ICARUS listings Free·Fli[Jht. Please

DECEMBER 197.5

M2 sq. fL weight SO lb. St1cm:tural materials: dacron sail stretched over aluminum tube frame with stc1ink,ss and fittings.

If, mph

[);wid Tiemeger

approach to ultralight glider a modified wing with Twist grips glide ant,le roll, yaw shift gives pitch controL Dave made few encournr1ing ground currently soliciting for Should of will be

L/D Max

min. speed

18 fL l8 38 lb . . 1h0200 lb .. 0.89- 1 J psf

Jack offers detailed plans of the Hall's Hawk $7.SO The are easy to understand quite 11 of information on wind, dynumics, adjustments, how lo fly, and step directions for assembly.

8:l"

PERFORMANCE L/D Max . . ......... . Min. sink Stall ..... IS mph; stable in all Controllability at min. speed: very res,po,nsive

Designers 30 ft

... 18.5 sq. ft Keel. weight angle. billow Airfoil

. 20 ft. ... 11 fL . 42 lb.

. . . . . . . . . 102°

Lebeck Structural mrJtcrials: 6061-T6 aircraft aluminum

.. Tom Peghiny & Terry Sw•ee1nev

ft 170 It. . 7!i lb. .................... U psf . ..... . 20 n,a,hn·i~l·a· aluminum tube spars, ribs with 3/32" %" pine Cilp foam core leading edge covering.

Controls: the control stick operates elevons/ rudders viil aluminum tube torque tubes. After l year of construction, the Swin,ler made its first public appearance the 1973 Otlo I .ilienthal Annual Meet. Two of flyinq has proven the desinn to be extremely slable, allowing "l1c1nds off" in s1 rainhl flinhts, and only requirinn ririht or

left pressure on stick for turns. The Swinger's relatively high touch down speed makes for touchy landings under no.wind conditions. The longest fliHh1s to 1 hour at Torrey Pines in 8·12 winds; 1 hour Edwards Elsinorn, hours al Little Mountain, Bernardino, CA ·which the unofficial record for th12 site.

MONOPLANE

ft . . . 160 sq. ft.

8 JOO lb .

. . . . . . . . . 120.200 lb. 361, 8% thick, 8% camber spruce winiJ, ply ribs, in. edge fuse, 4130 chrome dacron covered

No. still ilctive . . . . . . . min. speed: speeds.

. . . . . 12@

mph . . 2.8 fps (al 18 mph

' l

controllable

Max. Hg's" ..... .

OTHER . . . . . . l<eith Hunten

. . . 1

The Hunten Monoplane was by Keith Hunten of Tucson, Arizona, who a B.S . deqrce in and Mechanical En,!ineer The Hunten features 3·axis control: flyinq and spoilers coupled with rudder. Its total fliqht time to dc1te is approximately 3 minutes (7 flinhts off a 30.foot hill).

PERFORMANCE L/D Max . . . . . . . . .

SPECIFICATIONS 11 Span ..... , .. . • .. • .. .. .. .. . 2!i6 ft. Area ........ . .... , .. . ........ ' ' . . . ' ' . ' . . . 1.7 c:dne... . . . . . . . . ......... 16 ft. . . . . . . ............ ' . . .

ft.

. 40 lb. Empty weinht . . . . . . . . . . ... , . . Pilot weight . . . . . . . ... , to 185 lb. Winn loading ................... to 0.9 psf Nose annle . . . . . . . . . . . . . . . . . . 90° Sail billow . . . . . . . . . . . . . . . . . "One Manhours requirnd . . . . . . . ....... , Structural materials: Bamboo and polyethylene

. ............. 3

Taras describes the first hang glider meet as thus: "In celebration of 12:3rd birthday of Otto Lilienthal in 1971, there on a hillside in California motley fleet the likes of which had nol been seen in fifty years. An live assortment of sticks, bamboo ran· dom dimes!ore materi,1ls had fashioned to create an armada of foot,launched 'aircraft' "The Batso is one soch "aircraft". This "old timers" trainer was popular because it was cheap and easy to build. An $20 investment brouqht real, bird·like and a day of fun for the whole (until the first crash, that is). The this qroundskimmer is shared Rogallo, Richard Miller and

DECEMBER 1975

Spc1n .. Area Aspect ratio .... Empty Pilol

fl.

ft 1.4 ... b5 lb.

JOO 190 lb .

. . . . . 0.8 1.25 .. Modified 3? Structural materials: aluminum, wood foc1m

fame when it becc1me the L/D Max Min sink Stall.

8 (i1l rnph 1J fps (<1) JB.20 mph gentle

Tc1rc1s Kiceniuk, Jr. .... hundreds

hour. Tarns foc)t-1.iunclierl foot cliffs of Torrey north of San Diego <luly ?., 1972 and flew an 1 hour and 11 minules. After Bob stole his his dominion wilh a ?. minute flight October 29, 1972 ,.111ain at Torrey Pines. Tctri\S is 1r11e pioneer in 1he han~1 glidinq world 21nd WilS the first ultralight pilol lo

m,1ke use of flight instruments, his Icarus ll with airspeed indicil1or variomeler for his record fli1ihts. But Kiceniuk is nol the only rnas!er of I lie JL Lc1rry Mauro so;1rs one ((con1inin a tv commercial, and Steve Patmont Porler came in 3rd mid 13th in the World Meel last year. You can biplane in kit form from Ultrn~ M,•,d,in,,s or send for the pl1,ns for $11 fron1 Tarcts.

For more details

Keel Empty Pilot Win,i Nose angle. Sail billow. Structural materials: Dacron

20 ft. . 10 lb.

. '/i (ci) 2/,

250 sq fL

. . . 6.67 fps (al 18 . . . . . . . . . . . . . 10 mph

Stall

OTHER . Mike Nelson . 330 200 ?.SO

still ,\Clive ..

PERFORMANCE

..... 20 ft

wing or spin

190 lb.-up 0.9 psf-up .. 86° 3.F5° x .049", ]" )( .O,i8",

IL ratio .. edge ........... .

Sl,111 ch1,racterislics: qood; no terrdcmcyto drop

Nose m,gle. billow. Siructurnl materials: 1 W' :f8 Dacron

.049", l"

90° a.5° .058",

The Kondor Stanclmd features 14 inches of scallop in the sail 11nd a seal to prone plate system which allows a super fast ] .minute change. ft claims exceptional penetration and quick

response.

Controllability ,it min. speed: excellent, very s!i1blc

OTHER

30 ft Aspect r;itio.

Leading edge Keel ..... Empty wei!'{ht Pilol Win,!

GROUND SKIMMER

......... 2~0 sq. ft 3.M . . . 21 ft. 19 IL ... 38 lb. 175 lb. up 0.9 psf,up

PERFORMANCE

Max

. 6 (cil 28 mph 5.4 @ 20 mph Stnll ..... 10 mph Stall chM,,cteristrcs: no tendency to drop a winq or spin

& slill active ..

.. Mike Nelson . 30

The Kondor World Cup specifically for USf lGA and Cup Sla,nd.ard competition and boasts cxceplional penetrz,ticm and quick response. It also foaturns seat.Jo· prone plate system for ]~minute channes.

80904 PERFORMANCE

. . . . . . r; L/D Max Min. sink Stall speed .... Stall characteristics: qen1le stall with chutinq capabili1ies

. . . . .. . .. 21-26.25 fL .. .. . .. 184-287 ft.

75 .... 16,20 ft. .. 16-20 fl. . . . 37 41 lb. 100-220 lb. . 0.85· LO lli./sq. ft.

Keel .. Empty weight Pilot weight Wing loadings Nose angle .. Sail billow . . . . . . . . . . . . . . . . . . . . . 4" Structural malerials: 7 coated cable; 606tl-T832 .049" wall doweled, num tubing; flyin!:i cables oft urnbuckl(is; stainless steel nose plate and ri~iging

SPECIFICATIONS ft. ft. 5}l .... 45 lb. 13018S lb . . . . l .0-2.0 psf high profile, 8%, single surface . . . . . . . . . . . . . . 30° days for us required . weeks at the most for the homebuilder materials: 606J.T6 and 2024-T3 alumi-

8 (itl mph with gross weight lh.; 8 (al 35 mph with a gross weight of

The LEAF (production began May, structural itself on its high Category I around of and an adjustable the king and 3-picce control b11r (58 in.) are made on epoxy.

230 lb.; 8.75 when flyinq prone. Min. sink .. '.{.2 fps with gross weight of 230 lb. Stall ... l Stall Stall gentle and table. It will not drop off or spin because of its considerable washout for low and high speed stability. Controllability at min. Because of positive surface control responsive pitch control, it is extrerrn,ly controllable at any minimal airspeed.

134

PERFORMANCE

No. still active .

OTHER ,Jeff M<Jgna n still active First flown .

.. 31 April, 1974

...

too m,my pilots, of transporting more complicated overshadows its greater performance. The Sundance lA to have the best of both worlds. Its unique system of con· struction affords unbelievable it folds into a J 5y,;.foot Hoqallo bag!! assembled with compression plugs to ensure 100% structural integrity-·even without bolts, and

employs drag rudder for lateral weight displc1cement for Jonriitudinal

1./D Max Min. sink Stall . .. ... . .... . . .

............

PERFORMANCE (itl 27 mph with 9@ when (iil mph with virtually slaJJ.proof. describe it and that's

ft.

156.75 sq. ft.

Aspect ratio .... . . ... 50 lb. Empty weight .. . 150-210 lb. Pilot 1.0-Vl psf Wing Airfoil high profile, 8%, single surface Sweep angle . . . . . 30" Structural materials: 6061,T6 and 2024,T3 alumi· num; Dacron

still active ..

The Sundance 1B also foat ures

While the present generation of hanggliders are a new dimension of them don't give you much of - SPEED. you have ever been caught in speed up you see your glider still hovering over an undesirable area would surely mean added The Electra Flyer Cirrus offers an abundance of heard claims of incredible speeds made by some manufacturers the Cirrus does have the we claim - 50 mph plus. also go and landing speeds are surprisingly aspect ratio (5.53), the Cirrus can soar in very light winds. Without the tip inertia produced (Lnmcated) tips, the pitch and roll response of the Cirrus is quick and nimble. The sail incorporates very thin plastic tensioners between every panel the

can For further information, agent vour area.

billow Structural materials: aluminurn and Dacron

SPECIFICATIONS ft. ft.

164.8

14 rnph

Aspect ratio . . . .. Leading edge . . . . . .. Keel ..... . Nose angle .......... .

fl. 9'8" 100°

,Jeff Maqnan desiuned Ro[lallo in order to lubes (no swin[l stabilizer,

MAN-FLIGHT Box 872

harness) and hc1d c1

Manhours required Nose Sail billow . Structural

ft. . . 171 sq, ft. Leading edge .... , ... , , 16 ft. Keel . ft. Emply weight . . , 88 lb. Pilot . . . . . . . . . . . . . . . . . 110 180 lb. Wing . L04,l.27S lb./sq. fl Nose angle ... .. .. . . 8:3° . ,)rl'> billow. Structural materials: 6061,T6 aluminum

l./D Mc1x Min. sink

..... , . 4 (ii) fps

L/D Max . . . . . . . . , . . , ... , ... 4 24 mph Min. sink . . . . . . . . . . . . 7.fi fps (<il 18 mph Stall speed . . . . . . . . . . . . . . . . . . . 16 rnph

MK-2 SPECIFICATIONS ft. Span . . . . 179 sq. ft. Area ratio ... edge . . . . . . . . . . . . . . . . . . . . ft. Keel. . .. .. . .. .. . .. .. . .. .. . ...... 16 ft. Empty weight . . . . . . . . . . . . . . . . . . . . . 38 lb. .......... 140-180 lb. Pilot .. 0.94 l.l5 lb./sq. fl.

.. 20 from plans . 120" ,·o

'.)

6063 T6

Aspect ratio . . . . . 16 fl. Leading edge 16 ft. Keel. Empty weight . 38 lb. . 140-180 lb. Pilot weight ... Wing loadings 1.04· 1.2 lb./sq. ft. Nose an,ile , . . ' ' '90° billow Manhours . . . 20 from plans Structurnl materials: 6061- re, aluminum

aluminum

, 4.5 mph L/D Max . . Min. sink . . . . . . . . .. .. 6.7 fps @ 18 mph Controllability 11t min. touchy, sensitive in pitch; sluggish in roll.

rnph 19 mph

PERFORMANCE

Michael Markowski calls this the first sm:cessful · its first flight kit,: in the Eastern parl of the stands oul being September 16, 1971. This because it was slrut braced (no cables).

promises

hybrid, truncated tip higher ratios and

0161

168 sq. ft. Aspect ratio . . . . . . . . . . . . . . . . . . . . . . 78 16 ft. Leading edge . . . . . . .. . . . . . . . . . . . 16 ft. Keel ..... . Empty .. 40 lb. ... 140,180 lb. Pilot 0.94-Ll5 lb/sq. ft. Wing loadinrJs Nose angle . . .. . Sail billow . . . ... . Structural materials: 6061,T6 aluminum, poly sail

wing loadin[JS wr!II the problem of stabilizing high performance Rogallos. The Sundance II, designed in January, 1974, and built and flown in April, only, and so the performance accurately known. conservc1tive figures listed above are based on measured and calculated variables.

.. .. .. .. ..38.6 ft. . . . . . 260 sq. ft ... , ..... S.75 . . . . . . . 20 ft. . ... 15 fl . , . . . . . . . . 55 lb. I.50200 lb. . . .. 0.77 LO lb./sq ft. . . . 150°

Aspect ratio Leading Keel ... Empty wei,iht Pilot Wing Nose angle ...... . Sail billow. alumiuum and Structural

L/D Max . . . . .

plastic sail

. ... 6 18 mph 4.2 fps@ 16 mph . , .. , . 11 mph very sensitive in pitch; not

Min. sink . . . . Stall speed . Stall too stable Controllahilily

min.

speed:

sluggish

roll

The strut-braced MK7 featured win£l tip spoilers and hang tubes.

Max sink

MK-8 . Michael Markowski

Structural materials: 6061-T6 aluminum and nylon

PERFORMANCE

Plans for 1his Ro1iallo (,fonuary, 1972) mnong the first to sold in the

L/D Max . . . . . . . . . . . 1 24 rnpb Min. sink . . . . ......... 7.5 fps (al 18 Stall speed ......... 16 Stall characteristics: nosii slisihtly than typical) and The canard stalled first.

OTHER Designer. . ....... Michael A.Markowski . ... 1 No. built.... .. . . . . .. . .. .. .. . The Skysurfer MK,2, like the ,,K\/s11rnn cables but was strut braced.

Aspect ratio ..... Leading edsie . . . . . .. Keel. Empty Pilot ........... . Wing Gross weight . . , . . . . . .

JO fL .. JO ft .. 20 lb. ... , ..... 80 lb. . Ufi lb./sq. ft. . . 100 lb.

.. 22.6 ft. 181 sq. ft. ratio. ed1Je

.. 2.82

. . 16ft. . . . . . . . . . . 16 ft. . . . . . . . . ... , ... ;53 lb. . , . 140,180 lb. ... 1.04· 1.2 lb./sq. ft. . , . . . . , 90°

Keel Empty weight Pilot weights Wing loadings Nose dncile ... Sail billow . Manhours required Structural

Max sink

. ' , r·o ) .. 20

6061 T6 and plastic

@ 21 mph

... 7.5 fps

16 mph

PERFORMANCE

PERFORMANCE L/D Max

. 4 (ri) 24 mph 7.5 fps (al 18 mph

Min. sink Stall speed

....... , . .

, .. 16 mph

. . ,, 2/Uft. ... , ... , 141 sq. ft. Aspect rnlio . 20 fl. Leadinsi edge . , . Keel .. .. . .. .. 10 ft. Empty weigh! . . . . . . , . . . . . ...... 40 lb. Pilot weights . . . . . . . . . 140 180 lb. Wing loaclings . . . .. ..l l !iii Jbjsq ft. Nose angle . .... ....... . ... 90" Sail billow........ . ..... , , ....... . M,mlmurs required. . ... 20 Structural rnatt'rials: 606'J.T6 and plastic

PERFOHMANCE

L/D Mnx ... Min. sink Stall spel'd . Stall charncleristics:

. . , . , . 6 (ii) 26 mph . . . 6. fps (iil mph 20 mph More positive than ;;

"stondarcln Controllability al min. speed: Holl control more sluggish tlwn "standard". More sensitive but also more stable in pitch.

II"

MK-10

L/D Mc1x . . 10 (<ll rnph Min. sink fps (al 18 mph Stall speed .. , . , . , . . . . . . . . . . . . .. 16 mph Controlbbility at min. spePd: slugriish in roll wilhout wdpnons; good elevator

MK-14 No. built, ....

SPECIFICATIONS Span .. ... ....... 18.1115.i!ft. /\rea . , .... , . . . . . l 19 228 sq. ft. /\spec! ratio . , . . , . . . . . . . 2.82 Leadinqedge . . . . . . . . . . , . . . . . . l318ft. Keel...... . .......... J:l.]8/t. Emptyweiqht . . . . . ,, ... , 39491b. Pilol weights . . . . . . , . . . . . . 100 210 lb. Winq loadings , .. .. .. , .. .. .. .. .... ].(). I Nose, angle . . .. 90° S,1il billow . . . . . . . . . ... , . . . . . . [i" Structmal materials: 6061 T6 aluminum with Dacron

PERFORMANCE 4 (cD 24 mph fps (al 20 mph . ..... , . 17 mph

L/D Max Min. sink Stall spPed ..

Markowski';, Eaqle m, lmilt in Seplemlier 1974, features hi11h dihedral (6), wilrperons, rudder,and elev<llor.

MK-16

... " " " " .. 21 ft. . . . , . . .. , 1!54 28:l sq. fl Aspect ratio . , . 2.82 Leading edric .... , ]5,20 fl. J{ef'I. . .... l:i-20 ft. Emply weight . , . . . . . . . . . . . ... :l5 49 lb. Pilot weights ... , . , . 120.2.'l!i lb. Nose anule . , . . . . . . . . . 90" Sail billow . . . . ......... , . Siructural malerials: 6061-T6 ,rnd Dacron

OT HEH

.. . . .. . . .. .. . .. 28.3 fl .... ]50

ft.

Aspect ralio.. . 20 ft. Leading er\w . . . . . JO ft Keel . . . . . , .. . .. 4:i lb. Empty weiqht 140 180 lb. Pilot weights . . . . . . . . , .. LS lb/s(I. ft. Wing loadings , .... , .. l 90° Nose angle . . ...... , , . . . . .. Sail billow . . . . . . . . . . . . Structural materials: 606:J.T6 and plastic

Designer, , No. built., .. No. still nclive .. The

MK 14

than a "standardt n1ore sensitive and rnorc

stable in pitch.

. Mich,1el Markowski , . , , .. , ... , .. 2000 . , .. , .. unknown

feat

redundant

.. , . , . ,

. . . 32 ft.

.. , . . . . . . . .

181 sq. ft.

. .. , .. .

5 .68

Leading edge . . . . 22.67 ft. Keel. . .. .. .. . .. 1134 fl. Empty weight . . . . . . . . . . . . . . . . . . . . 50 lb. Pilot wei,Jhts .. , ... , . . , . 1:iO'i'/0 lb. Winq lmidin,is . . . . . . .... , Ll l.21 lb./sq. ft. Nose angle .... , , . . . . . . . , ... 90°

PERFORMANCE mph . Min. sink Stall :,peed . . Controllc1bili!y at sluggish

. . . . . ..

22.6 ft

........ 181

ft .

. 2.82 Aspect ratio, .. 16 ft. Leading edqe , 16 ft. Keel Empty weight .......... , . . . . . , ... 50 lb. Pilot w,iights , . . . . . . .. , 140· 160 lb. Wing loadinqs . , . . , 1.0!i-1.16 lb./sq. ft. Nose angle , . . . . . . . . . . . , 90" . ....... . Sail billow. Structurnl materials: 6061 ·T6 aluminum and nylon sail

16 mph

Designer , .... No. built .. No. still active .. , . ,

. Michael A Mcwlmwski .. ... :iOO . . , unknown

MK-1

ft.

Span. /\rea .

. '''

. . ...... 6 (al 25 mph . . . . .. :i.!i fps (a; 20 rnph . . . . . 17 mph min. speed: roll rnsponse

]8]

, , .... , . 5.68

. . Fi°

Structural malerinls: 6061 T6 and Dacron

L/D

MK-I

Stall speed . . . . .

mph

The MK· l 6 fcatmcs redund,ml rigging, double kinqpost and lwrl slrap harness.

SPECIFICATIONS

Sail billow . , . . . , . . . . . . . . . .

This hiqh rnlio kite featured tip e><tensions (truncated tips).

4 .!i (i11

1/D M<1x

riqging.

MK-15 "HARK IV"

PERFOHMANCE ... , . . . mph L/D Max . . 6.7 fps (cv 21 mph Min. sink . . . . . . . . . . . 19 mph Stall speed .. , . Sia II c harncteristics: more posilive than "standard" Conlrollability at min. speed: more slugqish in roll

PERFORMANCE

ft. !(eel . .. .. .. .. .. . ... 1 L:34 ft. Empty weiqht '' .. ' '.' lb. ......... , . 150,175 lb. Pilol Wing . . . . J.l.J.25 lb./sq. ft. Nose onBlc~ . '' . ' ' ' ' . '' 90° Sail billow , ... Slructurnl materinls: 6061,T6 aluminum and Dacron

PERFORMANCE

rn SPECIFICATIONS . . 34 fl. 158 sq. ft.

, . . . 7.3 Aspect ratio . , . . . . . . , , Empty weight , , . . , . . . . , . . . . . . 75 lb. Pilot weigh I .. , . , , .. , , , . . . . . . 1110 180 lb. Wing loadings , . . . . . . . . . . 1.4 1.8 lb/sq. ft. Airfoil . . . . . . . , . . . . . Milrkowski Sailwinsi

L/D Max . . . , . . . . . . . . . . . 6.5 (11) mph Min. sink . . . . . 5.5 fps @l 20 mph Siall speed , . . . . . . . . . . . 17 mph Controllahili1y at min. speed: improved roll response due to wider control b,w

OTHER The MK.17 features f,Jl:;.foot wicle control bar and double deflexers.

L/D Max

•.•••• 311 ft. 159 sq. ft. Min. sink . 65 lb. . . . . 13s.200 lb. .I.4,I.81 ft. Siructurnl materials: aluminum

Stall speed . . . Controllability The Eagle IV elevator.

(prone) (supine) (sit1ing) 2.9 fps 19 mph (al 18 mph @ 17 mph . . JS mph speed: sluggish out there 6 dih,;dral, rudder and

, ·'"''"'' ..- IVa SPECIFICATIONS ... 34 ft lf,9 sq. ft. . 7.3 . .. 70 lh.

Aspect ratio .. Empty weight .

INC. 14th Street California 94606 536-1500

Max sink

Structurnl materials: aluminum The Eanle !Va rudder.

coupled wapernns and

chute mode if held in stall. Recovery is slraight forward and posilive with the initi· a1ion of div,i. st raighl for become mushier iu pit ch response forwilrd.

MANTA 80 SPECIFICATIONS , ... , . . . . . . . . . 2026 ft. . ... 143 264 sq. ft. . ........ Aspect ratio. . . . . . . . . . . . . . 2.6S Leading edge . . . . . . . ... 15,20 ft. Keel.... .. . . .. .. .. . . Js.20 ft. Empty . . . . . . . . . . :JS.46 lb. Pilot 100,250 lb. .... 0.90,I.OS lb./sq. ft. Wing Manhoms required to assemble kit. Nose angle .. . .... 80° . 40 Sail billow.... . . . ...... . Structurnl materials: TUBING: 6061 .049", hardwood dowels, bushings. AN or fine thread, cadmium stnmgth of 80,000 stainless steel 3/32" oz dacron, double stitched, cul to compensate for spar flex.

No. still active .

.... l<ent Trimble, 1972 . . . Thousands . . . . . . . . . . . Thousands

20·foot gliders have wing Manta.designed it impossible to lose wing wire. over one hour in the first recorded mountain w,we flown by hang 11lider.

PERFORMANCE .,. Max sink

. . . . . . . . 4 (a) .35.33 mpb ...... 7.5 fps 22·24

...... JS Stall Stall cha,racteristics: very mild, reverts to

Tests have b<1en made under actual condi· tions. Precise infonm1tion by testing in constant condition wind tunnel) not available and state of instrumentation has only limited accuracy.

. . . . . . same as

IV IV 16 mph nood response on

........ same as

MANTA 80 SK

ch,ar2,ct,~rn;t1c:s: See Manta 80 S min. speed: strni,1h1 forward become mushier as stall is Stall recovery is strainht

SPECIFICATIONS 23.6,25. l ft. 185,231 sq. fl.

...........

. 18, 19, 20 fl. ... 17, 18, 19 ft. . . . 38,45.5 lb . . 125 220 lb. .... 0.9:i 1.0b lh./sq. ft.

'' goo ' ''''' '' Manta 80

' ' ' ' 40

PERFORMANCE

. . 4.b Gil 35.33 mph .. 7.b fps (iii 22 24 mph

OTHER Desinner.. . . . . . . . . . . . Kent Trimhle, 1972 No. built ........ b20 No. still active . . . . . . . . . . . . No actual data The 80 SK embodies most of the significant st rue lured fea1ures of the 80 S except its keel is shorter than !he leading edge, giving an improved glide and increased pitch sensitivity. 1974 the 80 SK claimed the longest duration the first Grand Tarnhee meet & attained and 5th at 1he second (3rand Tar11hee meet. An 80 flew over two hours in the firsl recorded mountain wave flown by a hansi glider.

MANTA 80 SK2 SPECIFICATIONS .23.6,25.l ft.

[85 231

Aspect ratio ... . Leading edge .......... . . . 18, 19, 20 fl Keel .. ''' 16,17,1811 Empty .. 37,46 lb. Pilot 12s.220 lb. Winn .. 0.901.0 800 Nose angle. Sail billow . . . . . . . . . . . . . . . . '40 Structural materials: See Manta 80 PERFORMANCE

1.ce Wilson, K('nf Trimble, and Mik<> Broy flying Monlo 80SK 2's

L/D Max b (al 37.39 mph Min. sink .... 7.08 fps (iil 22·2:i mph Stall 18,19 mph Stall ch,1ra,ct,~rii;lics: Stall mild but nose will tend to wander unless corrections made to maintain strnighl forward direction. Parc1 chute mode can be maintained with sufficient pilot proficiency. Stall with the the 80

CovotC' Hills

OTHEH

siq111ificar1t achievements, the 80 SK2 in the 1974 World Snow Kite rt also slill active .

. . . . . Kent Trimble, 1972 ............ 234 .......... No actual data

MANTA WINDLORD SPECIFICATIONS . . . . . . . . . . . . . . . . . 23.b,27.!5/t. . . . . . . . . . . . Jb5,220 ft. Aspect ratio . . . . . . . . . . . . . . . . . . . . Leading edqe . . . . . . . . 17.5, 18.5, 19.5, 20.5 ft. Keel... .. . . . . . . 14, 15, 16, 17 ft. Empty . . . . . . . .......... 4042 lb. Pilot . . . . . . . . . . . . . . 110.220 lb. Wing loadings . . . . . . . . . . . . . . 0.%·1.l lb. . . . . . . . . Min. 150, Max. 260 lb. Nose .......... .. 85° billow . . . . . . . . . .............. , . . . 3.5° Structural m111erials: See Manta 80 PERFORMANCE Mike Rmy

Cn/ifornio

Mnnto Wind/ord nt Ft. Ftms/on,

Max . . . . . . . . . . . . . . 5.[i@ 3840 mph sink . . . . . . . . . . ,6.67fps@24,26mph

Stall CcmtrollatJililiy at min. speed: Nose will Pilot must maintain directional Parachute mode possible to control pinpoinl landings but will out if control is not maintained. mode should not he altempled above 25F GL. OTHER . . . . . . . . Rich Finley . ... 30 production still active . . . . . . . . . . . . . . . . . . 30 The Manta Windlord which sells for $720·$800 is one of the highest performinq to date. It claims the longest duration tlitiht also 2nd place at the 1975 Frankfort Soaring Festival. Pr<Jtotyries were flown and tested over the year a hall and now being made to exper· ienced pilots. Factory built only.

FLEDGLING - SERIES A SPECIFICATIONS 142

29 11. ft.

Aspec1 ratio .. Chord root Tip root . . , Sweep ........ . Empty weigh1 ...... . Pilot weight

...... 5.5 ft. 4.5 f1.

.. .. mo

, . 50 lb. 130,]80 lb.

PERFORMANCE L/D Max

....... , . . . ..... , .. Min. sink ......... , ..... , , . 3.75 fps S1all speed.... , . 16 Cruise speed . . ........ , ... , . . J 8.2S Max. . .. , . . . . . . . 40 J0.]5 min. (no tools) .. Se1 up

Mnx sink Stall speed. Cruise Set·up

FLEDGLING - SERIES B SPECIFICATIONS 33 fL . 162 sq. ft. ratio root . Tip roo1 Sweep . . . . Empty weigh1 Pilo1 weight .

PERFORMANCE

.. :ns . .......... 16 ........... 18,25 ........

BOTH FLEDGLING MODELS

. 6.8 5.5 f1.

.. , .. 4.S fl.

.. .. .. .

56 lb. , . . . . . . . . . 170,220 lb.

MOUNTAIN GREEN SAILWING P.O. Box 771 Morgan, Otah 84050

Designers . Strucl ural materials: l min um 7 3.8·0Z, First flown .

Aspect ratio . . . . . Empty weight Plot weight . . . . . , Manhours required.

Hall alu 7 stainless steel cable,

t roUl)lle-t·ree as·

performance benefits Fl0rlnl,nn is sold factory built, in the future.

October, 1974

, . . , . , , . . . . . 7.35 . . . . . , 90 lb. 150 190 lb.

........ 600 16 fL

or polve,,ter. streamlined the mc1de of aluminum tubing, are streamlined stvrol'oam. The wing has a sheet aluminum spar D-tubc with foam ribs inside. Aft of the

fl.

SPECIFICATIONS

Controls: elevater & rudder Airfoil: double surface original, 12% 1hickncss

·, · ........................ 32 ft. . . . . . . . . . . . . ....... 132 sq. ft.

PERFORMANCE L/f) Max , . . . . . . . . ........... 12 Min. sink Stall . .

26 mph

. . . . 3.3 fps @ 2.1 . . . . . . . . . . . . . . 18

OTHER !<Jaus Hill

Larry Hall ... 1

Floater high performance foot· Iatmchable glider. It is unique hang gliders in that it can be landed on 1he or on its wheel and skid. The skid locilted between 1he legs but doesn't seem to hamper takeoff run; being placed where it is, provides an excellent and relieves the should he stumble on tc1keoff or is accomplished the rudder both being at!ached c<Jbles to single stick. The fuselage and tail surfaces are constructed of aluminum tubing of various bent to shape and bolted together. The covering is Ii ht Dc1cron

awaits those Super!loater.

pilot can fly stalolE;, unusually flown

flight will

a 1208,H L

WALNUT

ANA, CALIFORNIA (

14)

'iLl7,,1'LdLl

Stall. Controllability i\t min.

OTHER

.. 30 ft. 116 sq. ft. 7.S lb. ]35 200 lb.

Aspect rn1io ..

No. No. still

PERFORMANCE rnph

Max sink

Designer . . . ... 21\fl. , . 20S sq . . 17 fl. l in. ,, 17 ft. l in. lb. 140,180 lb. 8h 0

.. '.{0

fps (iil 20 mph

Bill

No. built & active . .

slight modification by Neil Smith .... 25,30

Bili Moyes, the Australian Rirdman, was the to build and fly a rncords and firsts irn:ludir1C: Grnnd Canyon descent {rnnfc,rl!m,,1ely confiscated his Neil Smith, university student couver, produces Moyes l<ite Kits.

GULL

No. built. No. still active

Calle Valle "F" California 492-0670

. ,, , .. . ......... 30 ft. 208 sq. fl. . 4.1 .... 19 ft.

ft.

adjustable control bar seated or posilions, positions for ment on e<1ch The HA's made of .058"

............... , , . , , , 43 lb. , , , ... JS0,190 lb. for the HA19 for different wei13ht rnnwis) ... 0.95 1.4 ft.

Murray Camber .<;tr11,•t11r;,I m,lie>1ri,ils· 6061 T6 aluminum, special

anodized stainless hardware.

6@ 17,18 .. , .. 9 10 recovery, no wing

Designer . . . . . . . . .

Stephen Murray

ft. 18 ft. .. 18 fl. 42 lb . ... . .... 1401701b . . 0.9S-L2 ft 82°, 84°, 86° (vaxia:bJe) 0 ... 2W, 3W 1;;,& (variable) Camber Struc:tural materials: 6061 T6 aluminum, Dacron, special fittings.

(a> 14 mph 12 13 mph

qood Stephen . 59

Keel

24 ft angle. . 90° Structural materials: hilmboo and plastic

Flaldwin, his junior hirJh school metal shop instruc lor. The design from pliolc)qi·ar,hs of Richard in the

los.

PERFORMANCE

L/D

. 384 SC]. fl.

.......... ]

This

Torn

16 ft.

first with the

glider, of Steven

10"* SC].

19 ft. 18 ft. 150-185 lb . .. .. 91°

... 40 materials: 6061 T6 aircraft aluminum, marine coble, base tube, down l" x . 083", tangs, crown, aircrnft turn. plate, plastic saddles, doweling ,116 bol1s.

PERFORMANCE @ mph 5.83 fps (ol 20 mph

18 mph in li!'lhtly with com. control of winq tips; instant iilide speed

Determinrd for the 19' 18'

..... Dennis

SPECIFICATIONS .... , .. , . . . . . . 25 ft, 6 in . . . . , .. , . . . . . . . . . . 220 ft

'' ' '' ,,, ,,,,.' ,, ,, '

ft. [8 ft.

'' ' ' ' ' ' , ' ' ' ' ''' ' ' ' ' ' ' ' '•'' '' 3\',;o Str·uctural materials: 6061T6 aircraft alumn·rnrn, 7 s/s 3/32" marine cable, control bar post: l" x .083" s/s

still maintains controll,ilble parachuting characteristics with noctrcipo,tts. Controllahility at min. speed: smooth yawing.

OTHER Dennis Kulberg

.. .. :32 ft. ...... 200 sq. ft

PERFORMANCE

. , ..... , . . . . . . , ... 8 @ 20 mph . , . . . .. .. .. 4 .23 fps (ii) l8 mph [4 mph yawing does not occ1.1r but

....................

Aspect ratio .. Leading edge .... .. .. " " ' 19ft. Keel .. .. . .. 16 ft. Empty .. , . . . . . . . . . ... 47 lb. Pilol flown from 130 185 lb. recomrnended 143. 195 lb. Wing loadiniis lb/sq. ft. Nose angle.. . ........... 110° Sail billow . . . , ... , ......... . Structural materials: 6061·T6 aircraft alL1m1m1,m, marine cable, control bar .083" truncations: J" x .083'', 1mnrn1es, plastic "',:rw..vn. machined post W' x .083" dcflexer tuhes, wood doweling, aircraft turnbuckles, #6 bolts. wing tip will to one just at stall. Controllability at speed: control above stall with no yawing to length and roll control sensitive hut not to porpoising or lateral

. Dennis Pimentel

.. 6

GREEN MACHINE SPECIFICATIONS

.. .. .. .. .. .. . .. ..

.. .. 21 ft. , . . . . , . , , . , . . ........ 140 ft. . . . . . , , . , ... 6 upper, 6 .,... . ..... ... . 55 lb. . . . . . . . . . . . .. 100 200 lb . . . . . . . . . . . . . . . . . . . 1.1,l.8 ................. , .... 255 ............. , ... , ....... , 15° Powell :St1·uctur·a1 materials: wood, bailin[J wire, starched and plastic PERFORMANCE .. , . . . . . . ... , 4 21 mph , ....... , . . . . . . . . 8 fps@ 19 mph .. , , . . . . 19 mph ch,ara.ctcnistic,s: normal Cc,nti·ollab1lity at min. speed: good

Designer . . , . . . . . . . . . . . . . . . Art Powell Number built ... , , , . . . . , , , . . . . . . . . . . . . . 1 No. still active . . . . , . . . . . , . . . .......... 1 the oldest still active, in June, 1971. an all flyin,i rudder and "steering

control. It disassembles for extremely

a VW camper and

in back ol and easy to

Art Powell, PhD, who teaches al at Pomona, has contributed time ernlhusiasm to tlrn advancemenl of ullralight

POSTCURSOR SPECIFICATIONS .. Upper 28 ft., lower 26 IL ... upper 19 ft., lower 17 fL . . . . . . . . . . . . . . ..... 182 sq. ft. . . . . . . . . . . . . . .. 119 sq. ft. . . . . ........ upper lower 7.4 . . . . . . . . . upper lower 4. 9 · · · · · .. · ............ 70 lb .

. . . . . . . . . . . . . . . . . . . . . . . 62 lb. · ..................... 150 lb. .. ...... .... ..... psf . . . . . . . . . . . . . 1.78

..................... 220

OTHER ............. Art Powell

... .... ....

still active . . . . . . . . . . .

.. ]

.. ...... l

..................... 212 lb.

. . . . . . . . . . . . NACA a"O Mean!ine Str·uctural materials: wood and fabric and 1ail; aluminwm tail booms.

PERFORMANCE .............. 6 (jh 23 mph

Art Powell of Diamond Bar, California, designed and built this unique biplane which has removable wing tips for conversion to a short confiLike the Green Machine it ""'"'''.;"- bar" rudder control and it disassembles for transport in the of VW camper. This

SCOTTI SPECIFICATIONS .................. 13-16.2/5 ft. ................ 172-268 ft. ... ........... .... .. ft. ·, · ..................... 16-20 It . .. .. . . .. . .. .. .. .. . 3S-::!9 lb. . . . . . . . . . . . . . . . . . . 120 2SO lb . . . . . . . . . . . . 0.9-l.1 lb./sq. ft. 3.8° x .OS8", 3 oz. Dacron.

PERFORMANCE ............ S@ 24 mph . . . . . . . . . . . . . . . . . 6.83 fps ........................ 12 mph I meets liMA Standards and features set up, streamlined crossbar (optional), adjustable CG, skid and custom sail

SCOTT H PERFORMANCE

SPECIFICATIONS ................... 27 & ft. ................. 176 & 1% ft. . . . . . . . . . . . . . . . . 19 & ft. .. .. .. .. . .. .. . .. . . .. . 15 & 16 ft.

......... 34 & 361b.

............. 125-170, 140-190 lb. ...........

. 0. 9- 1.15 lb./sq. ft.

.......................... 90° . . . . . . ......... 3°-3.5° (adljus,tatrle) S1n1cttual materials: 6063-T832 1.5" x .049" x .058" and 3 oz. Dacron.

Max Max

... 6

24 24

sink . Stall speed . . . .

The Scott II also miiets HMA structural dards. This short keel model boasts set up, billow (3.0 to 3.5), adJustable camber streamlined crrrsslrnr, colors.

DECEMBER 1975

OTHER Desi1iner . . . ..

SPECIFICATIONS ...

28 ft.

. 226 sq. it. Aspect ra1io . " " " " ' Leaclin!J edge . . . . . . .... Keel.

:l.73

]9 ft. 17 ft. ................ 42 lb.

13!i-200 lb.

102° aluminum & Dacron

PERFORMANCE Max sink Stall speed ..

. .. J8 mph ... :30 mph

Cruise speed ..... Max. speed

SEAGULL AIRCRAFT :1021

. . . . 4.Fi (al 27 mph . 5.83 fps (cil 17 mph ....... .. 14 mph

Mike Riggs

When the Seagull Ill was ii was the first and only non s1andard cially produced. Its wider nose angle, hen! leading edges, and increased aspec1 ratio made it distinctly cmmr·en,1. fact, it had its very own competilion d,ss in 1975 U.S. Nationals. Besides fine allpurpose qlider, the Seagull lll also C,re!J Mitchell won lhe 197/i Tow Championships with ii Pat Conniry held the durnlion record twice in a "lll" ln New Zealand, Rick holds the foot--launchecl out-&·rel urn Championships against some of the his Seagull Ill into !Olh I hat is 3 years old, the is certainly not and, in foci, is by far most popular one design (comes in one frame geornetry in one size) hanq ~Jlider today.

SPECIFICATIONS . 28 11 ... 174 sq. ft. 4.S9

Aspect ra1io Leading edge K<!el. Empty Pilo1 Nose

...... 19 ft. l'J f1 . 4:i lb. l:i5 200 lb.

102°

Struclurnl materials: aluminum & Dacron

PERFORMANCE Lil) Max Min. sink Stall speed . Cruise speed .

Max. speed

. 4./i fps 17 mph . ..... 20 22

197!i Summer Meet, Dr<)dc1clion pr<)tolyJJes all finished in 1he top 1en. has replaced the Seagull V which being manufactured.

FLYER SPECIFICATIONS .... 26 ft. .......... 91 sq. ft. . . . . . . . . . . . . . . . . . . 7.4 ratio . . . . . . . . . . . . . . 3 ..5 ft. Controls: elevator, rudder, lip rudders The Waterman/Seagull Flyer is classic type biplane hang glider designed by Waldo \N;1t<>rff1;m an ilviation pioneer who be1ian flying in 1909. Throughout his active flying has developed many new concepts, and his credits are the first

by the CAB (now the FAA) and the firsl roadable airplane. Sc!agull Aircraft worked with Waldo on the development of this modern classic which is built from sitka spruce ;,ml covered wi1h stabilized rips1op The rigqintJ is piano wire with bicycle turnbuckles, while aluminum sheet is used for most of the fittings. This machine really shows off individmil and stands on! on any field. Three gliders were buil1. F ronius occasionally seen soaring his in the above Torrey Pines. A second one sits on in 1he Aeronautical Museum in San Diego. 3rd, Seagull's own, with a flyable model, on the program in 1974.

:n ft. . 210

ft.

wing to move and slill "" ,,c"""' '"'"'"r th,o "V". The win,1 bol1s remain in 11t connecl to the crossbar by

Leading edge . Keel ....... . Nose angle .. Sail billow . . Wing loading

unknown in but wide~, very wide . 90° Nose angle Sail billow ............... . Structurnl materials: Hf' .058"6061T6aircraft aluminum and nylon ripslop

INC. Box 441 Wlhitm;;1n, Massachusetts 02382

PERFORMANCE SPECIFICATIONS

can be parachuted

ft. 179 sq. ft . . .. .. . . 2.88 16 IL . . . . . . . . . . . . . . . 16 ............... 45 ]b.

Designers ....... Mike Markowski, Ed Vickery, Ted Strong, Tom No. built ... about W from kits and com1Jlete, plus unknown number from plans. few were built by individuals with different

L/D Max Min. sink Stall. Controllability

SPECIFICA TlONS

ratio.. . . . . . . . · · edge! . . . . . . . . . . . . . . . ..... 16·20 ft. ... 16,20 ft. . 37-41/t. 110270 lb. 0.8S 1.1

min.

Designers No. built . . . . . unknown -plans were at one time but have been removed from the market after exasperating experiences with people from scratch

.. ' . . 4'' materials: 1·%" tubing & Dacron

.OS8" aluminum

pr,::,tcityrieofthis dlesiqnwas flown in mid Tom Peghiny used to compete

CLARK SPECIFICATIONS

. , .20.5 fl. . . . . 181

ft.

...... 14.5 fl.

ft. . 4/i lb. . 1:rn lb .

. 103 aircraft

aluminum and

PERFORMANCE

Peghiny l This was a cylindrkalized viirsion of the LARK two-foot high bow in each [(i.foot of machine bending. to NASA test on

!he production hang i.ilider at This Sports, Inc. A double·kin,l])ost aspect of this design. frame extended up past the two kingposts. Another unusual of cloth under

PERFORMANCE SPECIFICATIONS

..... 4.5

L/D M11x .

.8 ft .. 181 sq. ft . ......... . 5.9 . . .. . . .. .. .. . .. .. .. 22.8 ft, ... , . . , . . . . . . . . . . . . . . . 11A ft .. 45 lb. 120 140 lb. ...... OH LO psf .. '.' 90°

SPECIFICATIONS .............. 40 fL . . . . . . . . . . . . . . . . . . 200 ft

............................. 8 ..................... 109 lb. ............ 140l60lb. 1es1ed . . . . . . . . . . . . 1.2S-1.35 psf . . . . . . . . . Princeton sailwing materials: aircraft aluminum and nylon

PERFORMANCE

' " " ' " ................ 6

SPECIFICATIONS

pmachuted

OTHER Designers . . .. No. built.

Mike Markowski, Ed Vickery (only 1 by Sky Sports)

This was version of Juslin Cole help of Mike M,"orm,~u, Torn Peghiny. Cole's glider was one of the first to have finite (cut.off) lips, complete with the unusual feature that these lips could be turned

Designers . . ... Mike Markowski, Ed Vickery, Tom Perihiny, Ted Strong No. built..... . . . .. .... ..... ,l

technology from Princeton University's with sailwings in the early 19SO's, and Sky first entry into lhe field of rigid wings. conventional orr,non~,,,, included movahle rudder elevator of effect, providing "noncontrol", as the test pilot commented. Besides !he famous double !his glider was also tbe first to use flying wires. Althouqh Structural materials: ripstop nylon

could

Controllability at min .

aircraft aluminum and

PERFORMANCE L/D Max . . . . . . . . . . . . . . . . . . , .

............... , ......... 3S ft. . , ......... 160 sq. ft. " " " ................... 7.6 . . . . . . . . . . . . . . . . . . . . 89 lb. . . . . ..... , .. 140· 160 lb. as tested ................... 1.15 1.2S psi , .. , . . . . ...... Princeton sailwing

lcf1 and right for control purposes. version, built hy had tips. Althourih planned was discarded in mid. l 973.

Desiriners . . Ed Vickery Tom Pe11hiny, Ted Strong, Purtie No. built ............................. l

conventional frame and swingsea1 were controls were actuated through a single stick attached to 1he control frame. vrw,i,ito3, spoilers were located above the wingtips control, but could not be activated ~1lide control (such in sailplanes). As models, the Eagle I could be folded up and ported in the fashion of most mainly to the fact that structure was tubci from was suspended with the help of cables from the trailing wlge to tail. In the fabric was shaped by aerodynamic an airfoil. Flight testing revealed stability, and proportion of (Le., it was just too darn was dropped in favor of the the first Eagle using control, still had ved by wing warpin11 rather spoilers. bar and two were new features, and the double redundant were retained . introduced to design for the first incidence was left al The concept some promise, hut the primary designer mid-1973 and took the

SPECIFICATIONS

. .. • .. . .. .. .. .. :{O ft. . . . . . . . . . . . . . . . . . . . 140 sq. ft. . . . . . . . ' ... ' •. ''' .. ' ..... ' 6.4 .............. 42 lb. . . . . . . . . . . . . . . . . .... 140 lb. . . . . . . . . . . . . . . . . l. 3 psf . . . . . . . . . . ... Princeton materials: aircraft aluminum PERFORMANCE

.4 at min. speed: beautiful; it parachuwell

OTHER ....... Tom Peghiny, Ed Vickery

............................. 1

m,iin edge wing in flight assumed a shape, an incorrect The entire of Princeton dropped from further development Sports. (Early in the following year a foldable, double,surfaccd wing, the but mwer and never flown. It Fauvel sailplane airfoil, but was complex enough to discourage ideas of manufacturing. In some

ways, the subsequent Dne<>1,ci~,D ween rigid wing and emphasis has been on flexible Phoenix and Hawk.) The Phoenix section somewhat similar to the ,.,uiicK.sm,.,. a fixed horizontal stabilizer and a movable connected to the pilot's suspension. section also provided point to which the were attached for tethering the trailinH final conclusion, however, was that the requirements for tailing edge gammg correct would defeat the intention of obtaininB a light, foldable, "'n""'"">"" mance hang ulider.

DECEMBER 1975

. !30 16S lb. Pilot ...... 08510 Win,i Nose 4" billow. Sirnctuwl m;1terials: aircraft illuminum Dacron ralio. cd,ie

Max

tJ .S on first! [) on second

sink

·; fps

f'om Pcghiny, Ed Two of these were buill and led Iowa rd thf'. which lalcr went into production. The wc1s cul-down Luk (IA) inspired Dave Kilbourne's design work 11 hild ;, frame which was large by the standilrds of time.

]8 .. 20 ft .

. Hi18 ft . .1'742 lb. 1:30230 lb .

. 0.8!i-10 psf .. 90"

PhoJo hv KnilP ,fohn.son

fps 15 mph signified by loss of lateral contrnl; reasonabl,e parachuting capability

Hnb Siewmt f/yinq

Hobrnt (JA) oJ Mil/er.si!L N.I-1

Tom Pcrihiny, Ed Vickery wc1s !hfe result nf work with cut-kefel Larks

and was one of 1he shorl,tail Rogallos to onto the milrkel (mid-1971). Examin<1tion of ,md meet records for lhe Eastern shows the Bobcat has been very well accepted by f'Y,W1r1Pl,/'C>ri flyers.

No. built. No. still active

25.5 202 sq. ft .

.. :us ratio. . . l8 ft. Leading ...... ]6 ft. !<eel ....... 39 lb. Empty W<!ight ... ]3().]65 lb. Pilot 085,,10 Wing Nose anqle. Sail billow Structural materials: ilircraft aluminum & PERFORMANCE

sail windows but with uarioble

!Jeing flow// by Tom Peglii11y at Mt

Photo

W.A

Sail billow. Strnctural m,:,terials: aircrafl aluminum . . . not

... :LS

ft. determined Cup limit) . . 19 ft. 14 ft. .. :18 lb. 140 160 lb.

085-10 . 90°

No .

Sweeney, Ed Vickery . . .... 5 prototypes

This both Sky Sports' version of Mike Harker's World standard and an excellent

Airfoil Structural rnalnials:

ft. ..

220 sq. ft. . . . 4.6

.16fi ft. .. . .. .. .. 12 fl. lb. 130-260 lb. (t,mdem) .. 0.85-l.O

, Tom Peghiny,

Designers No. built.

been National Ct·,an1pi,:m· in 1974. Decidin11 that minimum

PEREGRINE II SPECIFICATIONS

:rn rt. ft.

... 200

lj 5

/1. 11 ft. lb. tested far .. 0.85 1.0 psf . . . . ........... ' 130° . ". "'"' 10

PERFORMANCE

I c:on,tnill21bility al rnin. for low end of

OTHER . Tom Peghiny,

built.

Vickery " " 3

was 1he design, stric1 ly control, which was flown at the ionals, and later, with modificaiions, in mainly cul down Peregrine with an

. . . 30 ft. 185 sq. ft. . .. . 5.0 19.5 ft.

Aspect ratio Leading edge Keel ..

11 fl.

40 lb. .. l:lfJ-185 lb . . . . 0.95 1.22

Empty Pilot

CP controlled L11:t1r1ck -insrnre,:.1. diffuser-type

PERFOHMANCE

Max sink

Stall speed . . . . . . Controllability min. chuting capability winds. strnction

Peg/iiny flying l\C'stre/ prototype#:?. Nole dorker (JrN1 of

Sweeney .. 4

and Visor Color Size (circle ono) Srmill, Medium, Large, X-Largc First choico: li9ht blue, yellow, beige (circlH onH} I rmcloso !or T-shirts or visors choice: rt1d, white, orange, tan, grnen, (circle one) $1 .00 postage and handling for each shirt and 50¢ for each visor. NC residents add 4% tax. Total enclosed Fly ........... $4.25 (5 color design) Surf Ille Sky (5 color ORDERS High Fly A Kite . ............ $4.25 (fi color (2 color Kitty Hawk Kites Send to: Kitty Hawk Kites P. 0. Box 386, Head, NC 27959 $1 for poster I catalog

PERFORMANCE

Max

sink fps S1all chc1racteristics: ~ientle with excellent para· chuting 11bility

OTHER

SPECIFICATIONS .................. 29 ft. ........ 170 sq. ft. ra1io. edge .....

" " . " " ..

" " 4.9 . .. 19 ft. ft.

... 36 lb.

INC. SPORT 1208 "H" East Walnut Street Santa California 92705 547-1344 RED BARON SPECIFICATIONS . .. .. .. .... around 20 ft. . . around 120 sq. 11. wei~1ht

. . . . . . . . . . . . . 60 lb. , . . . . . . . . . . l 00 , . . ... , ... "Warped wood" rnaterials: brown wrapping doped, broomsticks, iron wire go-cart wheel

M2ml10tirs required.

PERFORMANCE

.. 20 mph

the gang J

Built in the Red Baron was towed behind pickup at up to 40 mph. Chris Wills towed i1 up to 20 above the Bob Wills was satisfied with feel, Chris was content wilh just scrapinn along behind 1he

truck. The two Chrises decided that it, they would just burn it to the thrower, did just that.

controls that

somewhat.

Stall characteristics: it fell ilt Controllability at min. speed: formation flinhts

OTHER

SPECIFICATIONS

. . . . . . . . . . . 140

!1. ft.

ratio .... , .. , , . , , , ,

.. . . . . . . . 12 ft. .. ..... 16 ft. weight . . . . . . , .. 60 lb. weight . . . . . . . . . . . . . . . J00-200 lb. loading . . . , . . . . . . . . .. L 14-1.85 psf M,mt1orus required. . . . . . . . . . . . . . . . 15 edge

angle . . .

. ................. ..

90°

billow . . . . . . . . . . . . . . . . . . . ...... 2° Sl1ruc:tural materials: bamboo, plastic, duct tape, nylon rope sweat

PERFORMANCE L/D Mm< Min. sink

1975

.. , . . . . . 0.9].J.47

M,ml,01.irs required

SPECIFICATIONS ..... 22.6 /1. . 180 sq ft. .. 2.8 16 ft. 16 ft.

90° Nose angle . 210 billow ........ . Structural materials: bamboo, plastic, duel tape & nylon rope

Ccmtrolllati1\rly ot min. speed: enough to formation flights

OTHER

PERFORMANCE

........... :l

Max sink

..... I 1.6 fps

Bobby built a brother and his The original standard Wills li;3ht, wei,ihing under 30 better lhc1n tirne even trim. lt had

WILLS WING SPECIFICATIONS PERFORMANCE . 25.5 ft. . . . . . . . . . . . 230 fl.

.......... 18 fl. ........... ]8 ft. ....... 28 lb. ................ 150200lb .

Max . . .......... 3.5 (ci) 20 mph sink . . . . . . 8.3 fps (a; 18 mph Stoll choracteristics , ...... would only mush Controllability at min. speed: a little

OTHER

... o.n10

the gong ......... l

. t!.6"

16 mph

With gliders in the air cbimin;J one-third the sink and lhree times the angle, the Standard Wills Wing h;,s held the record twice, the duration record 5 the record for fli,iht, and won 1st 2nd place in the National Championships. Dr. William Harris flew from one end of Oahu to the other in a 20' Standard last to set the current record of 28 miles. Bob Wills the duration record 3 differ· ent times in his 20' while John Hughes held both the duration and records in a 20'. Bob has self-launched 4 (600+ lb.) a nnmber of times. The Wing has proven out lo be what ii was designed to be: d glider that is easy to It gives a pilot the confidence to learn to soar qu1cluy .... the confidence needed to win contests and sel records. fhe Standard was the first rmxl11c!lon kite to use wing posts to support the the wing Io hold a more t ur·bu1ler1ce and with varying ,u,,w,,;1,,. In turn, the wing posts keep the win,i from bending in and up, allowing an extremely flat 360's. All Standards have 6 battens which The

.the team* ....... 350

was introduced on the Standard and the 1,ing to be without undoing the tm·nl:,uc:k\,". The was the widest on the market when first introduced. All tlH~ tubin,i is bri9ht dip anodized, and AN eyebolts are used throuiihout its structure. The bushin,is are put in with n special machine which allows a stronger

WILLS WING SPECIFICATIONS 20 26 It. . . . 165·26S sq. ft. ........ 16,20 ft. . . . . . . 1620f1. . . . . . . . . . . . 35.1)0 lb. 9().650 lb. ........ 0.5·2.45

.... ;uo :::it,·uc:tural materials: 6061 :[6 aluminum; AN eye bol1s; stainless wire

PERFORMANCE ....... 4.2.5

Max sink speed

24 mph 20 mph

7.9 fps

OTHER

TERED STANDARD WILLS WING SPECIFICATIONS ... 23.4 fl .. 21S sq. fl 2.5 . . . 18 ft.

18 fl 38 lb. ............... , .... 180 lb_

GROlJND SKIMMER

Wing loading . . , . . . . . , ... , , . , ..... 0.95 Nose angle . . . . ..... . Sail billow... .. .. .. .. . .. . 3.] 0 Structurul m;aterials: 6961 T-6 aluminum and Dacron

PERFORMANCE Max . . , . . , , . . . ... 4. 2fi (al :>.4 mph sink . . . . 79fps (<i> 20 mph Stall speed , . . . . . . . . . . . . . . .... 16 mph Controllability at min. speed: poor

alloy of aluminum to be used, thereby eli1crm1ating the need for heavy wooden doweling. *Bob

Chris Price and Chris Wills have together since they were 9 old. flying machines have successful to date. Bob is for ideas into production, but designs reach the mark,!! have been developed wilh from all 3 men. Nothing new is ever tried the shop without the consultin,i of the other which makes for very efficient and research and development.

OTHER Designers .. No. built ..... This was an experiment to CG would performance and stability. sall was

on a st nndard so cts to cause

CG to move b<1ck 8 inches. There iable improvement in and in the glider was less stable and harder to It was flown prone and the size of its sp,,!c1a!(1ec:p

SWALLOWTAIL . ' " " " .. 3Llft. . 220 sq. IL

ft. ft.

140

Aspect ratio . . . , .. Leadin,1 eclge .. Keel.

" '"

" "

. ' .. 4.4 fl. .. 18 ft.

16 IL

rt.

. . :l4 ft.

240 sq. IL 1.82 24 ft. 20 ft.

Aspect rnlio. Leading edge ..

19-19 IL ft.

190

19 ft . . . l.9 ft

20-20

20 f1.

40,1)5 lb . 125 260 lb.

Emply Pilot Nose Sail billow Structural rna,ter·ial:s: bolts, turnbuckle

.. 90" alumi1·111rn, AN eye·

release

fl.

21-20 IL ............. 240

Max sink Stall speed

ft.

ratio ... , , . . , . . . . . . .

OTHER

3.7

edge

(al 30 , , . , , . 6.6 fps (al 20 ]6 mph

ft.

20 ft.

. . 31.1 ft. 260 ft.

20 ft.

.. the team 350

No.

The Swallowtail fomily purpose: high 1Jertonr1ar1ce parachute abilities They proven themselves tot his end over and over c1gain in contests all over the world. Bob Wills hit the hull's eye 6 out of 6 times to win lhci 1974 National Cl111n1pi,orn,hi11s while Chris Wills won lhe run placed The 20,20, and 22 21 an, production 22·20 designed for t,mdem flight could also be flown with a h,?avy The other Swallowtails that have been and flown that never went into prncluction. The z J .. l',1 wasan attempt to lhe had pitch control ,md al low The tandem and be flown solo. his fee! of altitude in it off Crestline,"''"""''''". eventually sold lo 260.pound individual who finally found a kite would fit him. He lows it,

fit

OTHER SPECIFICATIONS . . . 28.8 ft. . 235 ft. ratio . . . . .

edge ... .

. . 20 ft. with ]8.in.

. ... . . 20 ....... 45 lb. 90"

PERFORMANCE perfonnam:e. Never stalled.

First flown

...... the le,m1 " l 197~

The Truncated Sw?11lowtail probably the first double.surfaced Rogallo, cambered hood sewn over 1he, nose in front the kingpost. A bat len held the hood inflated. It flew well but did not go in!o production due to the of manufacturing the tips and because the ca1nbercid hood w11s next to impossibl,210 sew and have ii come out Later experiments proved tha! a surface curved keel was just but limit Price flew it to 3rd

DECEMBER 1975

LIGHTNING SPECIFICATIONS

No. first flown

. . . . . 33 ft. . . 2l!i sq. fl

Arca

. . '. s

ratio edHe

2:l fl. with 3 . ft. 12 Keel Empty ... 50 lb. Pilol .... 200 lb. Wing loadinq . . . . . . . . . . . . 1.16 psf Nose ,1111ile . . . . ....... 91 ° billow. . . . . . . . . . . 2.b° SI ruct urn! materiills: 6061 T6 aluminum and D,1cron

PERFORMANCF Max Min. sink

. . . . . . . 7 (ii) 28 mph ..... 5.8 fps (a) 22 mph Stall . . . would not stall Controllability at min. speed: hard

Chris Price /lew the 1.1,r,1111111,i Class at the 1975 U.S . This w,rn an exJJerimen\ had a ca1-r1bere·rl do much good and was tilken off. it had a verlical fin. The fin.11 co1,111,1ur.at1<,n loo stable due to the amount anheclral and washout .The u~,, "''" ,·c1 "''"'· Sport first-hand chance to learn oul a lip kiiP and learn Iha! there has got to be better way to iiet out of a kite ou1 to tips. lhe fact that Chris ,could the when it had first flown before shows how ahead of ii s time i1 w,.1s. rntc was virtually from 20 30 !I will no1 stall, but ins1ec1d wit houl it foils parachute

PERFORMANCE L/D Max '/+ (a.l 22 mph, 4 0,) 40 Min. sink 17 fps (al 18 Stall. . 16 mph; does not wan! to Controllabilily al min. speed: the bes! yet

.. 31.7 ff. 191 sq. ft. 22 ft. ]6 ft.

The SST an outgrowth of the 22 20 and 22-20 Swallowtails. Ii has a cambered very lit lie billow, and anhedral in the uu,sst>,lf. The wing are roached and have foam bat tens to ,ic,~ornpl!ish extension without any of the pro,blems The double They along maintain pc,rfcct SST is easy 1o pull into a dive, it there. It can b<c flown l1,u1cls-ofl time .. even in turbulent air .. returning to

44 lb. under 1'/:i lb.

... 1.02. ps1 91.25° 2.38"

-100 34. l ft. .. 210 sq. fl.

ft. 16 ft.

and level glide path. wilh its

. 14 lb. 175 lb.

100.14°

...... 36.73 ft. 199 ft.

6.78

:<l ft.

fl. 52 lb.

Pilot weighl . . . . . . . ..... 210 lb. Wing loadinri . 1.3 psf angle . . . . . . . . . . . . ... 120° Sail billow . . . . . . . . . . . . 2° SI ructural materials: 6061 T-6 and 2024 T-3 illu· minum, Dacron PERFORMANCE Hope the best yet This have

,m attempt to see whether heavy definite Reynolds number advantage.

on its own 1:1fter gust upsets SST retains its enerqy well, glide and low sink freedom and

Liqh\ning ll has 3.5.fool tips wilh 4.5.foot three feel ]Is cord al the tips is wider any other tip Made out of 2021 T completely ad:ustable and has curved edges for accurate washout control. It also tun~s a cross bar, 6 win~ wires batlens. its 36.'/-foot span, the LJ;r11111111~ ,m altempt al an all-out sink rate 11wu1J111c. question is, "Will the He,;nc,Jds nn:mbcr ,,chmn,taiie overcome the extrn frarne?" 1

TO GET THE BEST FROM YOUR GU orn, YOU NErn

DIKOUNT HMG MP\IL ORDER

ACCURATE CONrnOL OF YOU[~

URl'IIW NF\ME HF\NG GLIDING F\CCEIIORIC:I F\T DISCOUNT PRICE\

SP\\JE

LIST

IF\\JE ,~ NO \'F\l(S TF\X OUT OF l'lf\TE ASI< YOUR DEALER AGOUT

INDICATOR

:l8 MPH Modol. Wire 8ur Mounling (Plc(lSC spccily glider mfgr., type ond 1-ype of

5900 Ccmterbury ,Al21

90'.)3() even.

wr CARRY f:Vl:l<YHl!NG 13lll

TIit: GUDF:R

aluminum round. Dacron, double zig stitched and reinforced with 9 Dacron. hardware Airframe tubes sleeved.

L/D Max loading of 0.95 Aspect ratio, .. Leading edge .. Keel Empty Pilot Wing 0.88 lo L17 lb./sq, fl. extremes LO recommended for average conditions Nose angle . , , . 80° Sail billow Structural materials: keel, 1W' .049" Mast, l" .049",

Min. Stall Stall

Laterally stable and very

gentle. Controllability at responsiveness, minimal. Besl

, , , . , . 290 still active , , , . ,

. unknown

LOllor,ldO 80216

, , , , , , . , , , , , , , , , , , . , 14 mph

Designers , , Set,up time six skilled people and has always main· tained the reputation for quality products at reasonable and cornp(,titivc

SUN

IL .160-228 sq IL Aspect ratio,.

, , , , 24.5,25.67 fL 190-215 fl. Aspect ratio .. , . . 3.07 leadingedge ,, ,,, ,, ,, ,, ... 18.5-19.5/L Keel. .. .. . .. .. .. , . , . 1718 fL

fu~ Pilot Wing Nose angle Sail billow . , , .

, 16,19 ft. 16,19 ft. 33,36 lb. . , 111,238 lh, . , .. , 0.9,1.2

Leading edge , Keel., Empty Pilot Wing

SUN SAIL CORPORATION* 6753 47th Suite

*The interest in !fang Gliding in the Colorado and sp<x11r1c,1/ly the Denver area was rapidly the need for high inc:re,'lsingly obvious. ati<m w,is formed in of 1973 and tion of the Standard Sun began m ,Jd11u,in,• 01 Albatross Sails was contacted 1974 and prc,du,ced Sun lhe sails were corning in from California, the airframes mad(" in our in Denv(ir. It became obvious that the demand gliders was Alba pn)dtJC!ion limits. ln April of Sail foot loft and became sufficient. To this dalt, Sun Corporation operating in approximately feet and fully tooled up lo produc(, and of gliders, custom other manufacturers, rese,wch and design on new Sun Sail Corporation maintains staff

sail with 9,inch sail rate. lower stall aud ter v1r1v1-co,3tea cables (rolled, without tools for se,,tE,c1;pn:m,21 bar adjustment. Wings has incorporated handy items into its and shipping tuhe glider: container that converts to car.top trnnsporler.

fu.

, . , .. , ,

134-214 lb. . 0.91.2

,,,,.. , , , , .. , , . ,

Schmiedek<i, Bri11n ,Jensen , , . , , .. , 10 min,

Available in four (16', 17', 18', 19'), the Sun Standard has an airframe constructc,d of 6061 T ,049" wall c1nodizing tubing, Tailored compensate spar the sail is quiet and distortion·free. Otber include powder coaled tlaKe(:J,,c,n kingposi ilnd control bar, stainless har and stainless stec!I aircraft molded spar and kin,ipost fittings.

Designers , . , Ted Schmiedeke, Brian Jensen Set·up time , , , . , , , 12 min. No. still active , , , , 75 When the Sun H was to the at Telluride, Colorado in of 1974, it highest performance ,ilider available, but ii was a step above the Standard. The 82° frame was maintained, with 18 inches cut off the Con· siderable drag was reduced and stability maintain· c1d. Deflexor were introduced to eliminate deflexion, and ,1 better was evident. Sun II in now out of due to the rlevelop1:nent of tbe performance Sun II!. It more slep for inter to upgrade his (;quipment.

TO OHDER YOUR I IARNESS Oil FOR MO/ff INF:OJIM,I\Tl'ON WHITE OB CAI.I

D PLEASE SPECIFY PII .OT

AND WEJC,HT Wlff.N Uh1Jl·.11~11~u BY MAIi A MINIMUM $?,O 00 DEPOSIT MUST ACCOMPA~Y AU.

01mrns

f o !1 C,rnn:1,> P,\1 k

C/1l1fornkll1s <1dd (i'\, Sd ec, 1c1x

DEAi.FR INQUIRIES INVITED

Pl PII.OT

.JOHN DOWD RICHARD 7AUOROZNY

Blueprints Now Available

VJ-24 Sunfun • Airpl;me cont.mis Ill All metal, except fabric. • Easy to build. • Semi··cantilever, monoplane hang glider. Ill Send $2 for brochure.

ft. 180195 sq. IL ..... 4.13 1920 ft . . 1819 fl. .. 4042 lb. . . . . . . . . . . . . 122,192 lb. .. 0.9,l.2

6 cw

fps

23··slope, 17 mph wind.

e Takt1s off and lands in

steps in

The firs! produclion rnodels of !he to be too much flyers. A total of 8 qliders later modified to !he TheSun m very flat and

mph

VJ-23 Swingwlng fl Has been soared tor 42. min. on 34' .. higri t1ill,

Set.up time

pounds.

15·mpl1

wind. • Fully controllable in 3 axis. World's first high pEirformance hang gli<ier. e Send $2 for literature, 3·view, and color photo

180

ft. . S.l 19 ft. . . . .. . . . . ft. . . . . . . . 4:l lli. ...... ... 107 257 lb, ''''.'''''' . ]05°

\IJ-11 So-lo • Build the world's first fully controllable hang glider. • Standard aircraft controls. • Fully engineered. !ill Can be built in 6 weeks spare time. • Material cost approximately $400 • Send $2 for literature, specifications, and photo

Plans & Brochurnn

Kits & Materials

VOLMER AIRCRAFT OSK AIRCRAFT BOX 5222 DEPT. G 14547 ARMINTA ST. GLENDALE, CA. 91201 \/AN NlJYS, CA. 91402

few of the features that rnaln, finished wing. Many ac,:essories strn11mlininn, soaring w11c1uc)ws,

DECEMBER

SCORPION'S

Dan Poynter\, llANU GLIDING has 200 fn,ct filled pages and ar;o outstanding photographs and drawings on J'oot launclwd flying·, J,:ndorned by every nmjor dealer and school, over (i0,000 lrnvo boen sold ,wd now i\/H been complotoly rovismL i\va.ilablo in hard cover or soft, this l/OW,'/'O, WJfl,:rU1'-TO imcyclopedia is truly"tlie basie handbook of skysurfing", Covers basie to advanced !'lying, design, materials, construction, history, the law ,u1d Ji.st every major hito and glidm· on 1,Jw market, with its descript.ion, plloto, performance spccilic,tl.Jons and source, The book,and its list of over :300 manufactures, dealers, elubs and schools,is updated at oach printing and its been throug·h Urn press times! Whether you 'ru bu iJdin/.;', desig11 in[;, J'lyi ng, shopping or just J ook i ng in to the fastest grnwing fl port, this first and only complete rol'crenco book on the subjoct a must SOl•'T cov1,;n: postpaid (Californians add :3(i¢ saJm, tax) ll/\lU) COVJ•:H: $D,9f> pm,tpaid (Cnlifornians add (i0¢ sales tax)

new book with 100 pages a.ml 160 illustrationson towlaunehod lmnggliding, [t was written os1rncially for tlrn l'!atl,wd flyer a,nd those who find their hills covered with treos, .K l'l'ING covors tow Iau nched ult ml ight flig·ht in dept!J: launching in shallow water, deep water, jump starts and dock starts, Step by step instnictions carefully /,;Uido the novice throuf1;h taxi practice, towed fl ig!Jt and releaso to free flight, The history a.net legHJ chapters are some of Urn most intornsting whilB tlle book goos int.o a grnat deta,il in t.hn design and construction ol' towed g'liders ns well as tho required towing equipment Like HANO GLJ DENG, HITINU is uotjust a training manual but nn oncyelopodia of rofore1wo matoriaL ,JUST: $3,flfi post.paid (California,ns u,dd :?A~i salos tax) HJTlNCJ

SATlSl<'AC'J'IOl\l GUAHAl\lTl•;J•]D, Seo your nettrost doalor or send today to: Dan Poynter, Box 42:32 G, Santa Bartmrn,, CA n:irn:i

/. SKY OIHO

11. SKY SAILOHS

!I. FINAL APPHOAr,H

11. SOAIIING Ill & WI

12. SEQUENTIAL RW

An ideal gift! These 18" x 22" hi!Jh quality color lithographs ,ire ideal for lraming. (Dealer inquiries invited.) Please sond your order with payment in full plus 5fi cents for handling to:

•

/\NY 4, ONLY$ 9.95

•

ANY 6, ONLY $14.9!i

•

/\NY 8, ONLY $1!1.D5

filh!ll!);l'!l!)•Clll#IUl1!11Na lil\illlilillfill\USIIIII J:11119 §Q:\JTH MA;fi,!011 PRJVJ,:

!:1\ll !H1Hl1U3

II UAWfHOONll: GA

ONI Y $3.00 LACH

•

ANY 10, ON l Y $24.95

aog!H) USA •

ANY 12 ON Y $19.95

SUNBIHD TRAUGHT GUDERS #7

L/D Mcix

. "ST AND ARD" SPECIFICATIONS

........ 21-25 fl. . . . . . . . 163.230 sq. ft. 2.7 Aspect ratio .. 1619 ft. Leading edge ..... . . . 1619 ft. Keel... . ........ , . 16 43 lb. Empty wci,iht l002Ei lb. Pilot .. OS:11.12 Win,i Nose ,rngle . Sciil billow. . . '.'.' .. ' ' . 40 Structurill rnalcri,lis: aluminum tubing, Docron, cable

Min. sink Stall Stall char,Jeleriislics: foll off on wing

6'.!

The Performer l and a Sailfeal her subslantial elevation ,1,1ins of up lo ]500 lmve 1m1de in Sylrnar thermals, well riclge som'ing flights of hours.

*Performance fiiiures ,iiven erripirical measuremenls and checked for cornr>iltibililv (i e., if sink 1s comrJUtecl ;-1t a given airspecd it is not sink am npprnximG/C due instrurnenb the inaccuracy of 1

spee<l re~1in1c .

. . . . . 23.9 fl. .. 200 sq. fl. 29 18.b [t . . !7.2!i ft. 41 lb . 82° . i]°

S1i·1,1·111rc1l malerials: aluminum tuhin,1, Dacron cable

... 24.8 fl. 190 sq. ft

19 fl. . 16.5 ft . . . . . . 40 lb. 130 160 ll, . 0.9 l.l

aluminum tubing, Dacron &

Keel. ... 17.S ft. Empty , . . . . . . . 43 lb. J[jfi . ]()5 lb. Pilot .... 0.931.]2 Win,1 Nose ,rngle . billow . . . . . . . . . . . . . . .... 3.S' Structural materiols: aluminum tubing, Dacron & cable

PERFOHMANCE

Max

. . . . .... 5.9 Cw 27

sink

..... 6 fps (iil 21 19 ft. 75.S"

Keel.

Nose angle .

Sail billow . . ............. . . 3° Structmal materials: aluminum tubing, Dacron & cable

PERFORMANCE

GROUND SKIMMER

The Performer has achieved more than 2000 feel from the at Sylmar, Cc1lifomia, on seve.rnl occ.1;,1ons. Crigsby, edilor of Skimmer, flew September 171h from to has a scalloped trailing shortened keel, lip deflexors, lar,ic lec1din,J Sailfeather horiwnlal stabilizer, and sail. Min. sink Stall Stall chari.lcteristics:

The

ft. 205 sq. fl.

21 ft.

Stall speed

wilh its ni1rrow angle, mil conlrol effoctivencs;;

ilnglcs of attack ,1s well I ./D Milx . .

. . 6.1 (a) 29 rnpb

.. 6.6

fm its m.iximurn L./D.

PERFORMER V · "TRI-SAIL SPECIFICATIONS , , , , , , . , , , , , , , , . , , , , , , , 29.6 fl. 181 ft. ratio , , , , , . . , , , . , , , , . 4.8 edge,, 18.5 ft. with 3 ft. truncated

12 lb, '' ll0° aluminum tubing, Dacron &

year's research and

have slack1r1e1,s ratio. The Tri,Sail is also in yaw despite its very f111t sail. This

phen<)1,1rmal ul!rali11ht has 3,fool lnmcaled di11mekr leading wilh vf'ry tapered pockets. PerformanC(l fi,Jures have no/

yet been determined, but L/D Max. al least sink rate in the nei1ir,llc,rhoo,d fps, while slall

Empty weiqht

SlJNSEED Scio Street New York 14901

Aspect ratio, , . bolts, turnbuckles & bolts, ,m:il stnndard hardw<1re.

,James Hobson and inderwndenlly it to the ,Jim be;ian, experirrienls in June

SlJRF AIR MODEL I SPECIFICATIONS , , .. , , .. , , ... , , , . , , , 16% ft. , , . , , , , , , , , , , , , , , 107 sq. IL

Leading edge , . , 13 ft. Keel,, 13 ft. Empty . ' ' ' ' '' '.'. ' ... ''.' lb, ...... ,, JOO lb. Pilot Nose ' '''. ''' ' ' ' ' ''' ' 80° Sail billow , , , , , ' ' ' ' ' ' ' 100 Structural materials: all aluminum construction;

free. in the Prod-

hang the

Nags Phone 1-919·441-6247. Write for dealer information.

FLIGHT

INSTRUCTION

I STEVE WILSON

JACK BRITTON (213) S43 · 1014

,~ \\ding

JOHN McVEY

•

THE 8ELLS0M\\NG HELMET IS AVAILABLE THROUGH YOUB LOCAL BELL DEALER. Distrib11ted world wicfo by Eipper·Forrnance, Inc, Torrance, CA 90501

. .. 800 Nose angle . . . . . . 10" Sail billow ...... . Structural ma!eri,,ls: i\luminum and plastic

StJRFAIR H SPECIFICATIONS

. . . :?1 fl. 168 sq. ft. 16 fl. . . . . . . . . . 16 fj lb. 150-180 lb. l.0-1.3 psf

Designer . .

. . . . . . . . . ,/,mies Hobson

The Surfoir ll, based on the Ryan J·lc,J(VJmC!. 4 mil polyethylene film wing with :J,inch tib,ers1ta,;s it in I-foot modules and ;,tt;irt.,rHi The Surfair II an111c1pated need for a kingpost but used t;ipe

the leading

Wortmann neutral pitching airfoil Structural materials: Wood and plastic with some cardboard in early later aluminum and plastic with some

SWEENEY Rfd. Co:ncc,rd, New 03301

PERFORMANCE

ARIEL

Max . . . . . . . . . . . . . . . . . . . .... 5·6 .... Fairly conventional airplamHype stall Controllability at min. speed: very stable al slow speeds found in some soaring ronditions

SPECIFICATIONS

18 f1. one

4.6 (considering both Designers .....

................... 80-175 lb. ................. 0.871.55 . . . . . . Clark Y in beginning, later

Sweeney, John Coller, Paul

No. built; 6 or more corr1plet cdy separate No. still active

. . . . . . . . . . ..... .

and the by the idea. Jim 6-fool radio Rhein hold Platz lo determine whether it is a full size version. The "II" has been flown recen1ly 197 4 by Russ Velderrain and ol hers at Beach (Playa de! Rey)

had a improvements, the Ariel was transformed into a sophisticated, foam· ribbed, double surfaced with an aluminum frame and an inver1ed At the time that and his friends started on the first Ariels, they nothing about developments else where in the country and were just on with their own private renaissance gliding. aside this and some monoplane in orckr to more time on For more of his look under listings for Sky Sports, has made major contributions .

ULTRAUGHT FLYING MACHINES 59 California 95014 732-5463

SPECIFICATIONS

:m ft . . . . . . . . . . . . . .. , ....... 170

ft.

... .... . 30 ft . . , ................. 3.4 ft . . . . . 56 lb. 120 200 lb. 1.04, 1.[i 1 lb/sq. fL cornplete kit . . . . 40-50 LM 1675 and

PERFORMANCE

very smooth turns. Easily controll,ed. for tighter turns.

OTHER Larry Mauro .. built August, wing whose hori·

zontal stabilizer is short coupled below the main wing itself and is used for structural via warren truss. This ,!lider without the usually complicated ultraligh1s. The fact !hat the Demoiselle is one 1mm portable and launclrnble imJpr<::ss:ive since most rigid wings require at least omi friend for them to the top of the hill and This nener· ation ri,Jid ultralight cannot only of 10 to l, but it can also

landings! Added to all this is a under 200 fpm and a very fast assem bly time. Designer Larry Mauro is so enthused over his design that h,, stat,,s: "The Demoiselle a culmim1tion of :1 of experience exclu sively with fixed wing ultralights. We're really excited about the Demoiselle and believe its over, all performance charncteristics to be to tha1 of namely the V models produced by UFM."

GROlJND SKIMMER

steel, and Dacron

P.O. Box 582 Temecula, CA 92396

PERFORMANCF

(714) 616-5652 L/D Max

BROCK 82 OTHER SPECIFICATIONS

Desinnn .....

. . . 15.7:i 25 93 fl. . . . . 94.[j.2]2 S(]. fl . . . 2.63 . 12 19 It

. 12 . 19 ft. ......... 30 45 lb . . . .. 60 220 lb . . . . . , ......... 82° 3\1,° (rrone), tl'' (swing seat)

PC'te Hrndc pi/ntinq o Rrock 8? S H2"/19 JR at Esrnpe Country

is the fly inl

SPECIFICATIONS ... 22.31·24.93 ft lfj6.]99.5 S(]. fl. . 3. J . . . . . . 1719 ft. ....... 15 . ]7 ft. .... 40 lb. 120190 lb . . . . . . 82" 3.8° Stru,:l u:ral materials: 606] ·T6 aluminum, stainless steel, and Dacron

PERFORMANCE . . . . , . . . ... , . exceeds 4.5 . . . . . . . . . . . . . . . . . . 912 (depending on nose 40 mph Redtail is named after the unquestior1ed ch;,mpic,n of the Western The UP Redtail is not

glider may be to suit inclividual flyer's requirements for local conditions. It features ,J.wire device), defle xers, applied

SUPER REDT AIL

and tube clec1ts. The relatively short keel edge ratio insures good response in maneuverability, especially in 360" ..... , , , . . , , ... 19.68,26.24 ft. ...... , ....... , . 118·205 ,sq. ft. Aspect ratio . , , ... , . , ... , . 3.35 Leading edge , , .................. 1s.20 11. Keel., ........... 12 16 ft. Empty . . . . . . . . . . . . , . . 30-42 lb. Pilot " " ' ' " ........... 902101b. Nose . . . . , .. , . , . . , . . 82" Sc1il billow. · · •• •• , • • • •,,,,, •. 3.fi 0 Structural materials: 6061 T6 aluminum, stainless and Dacron

PERFORMANCE Max . , . , ... , . , . exceeds 5 speed . , 12·15, depending on nose camber Max. speed . , , , .... , , , .. , . , ..... , 40 mph John Dunhom soflrin9 To17cy Pines in cm Sl?T 82°/20-16

DECEMBEH

The

ffadtail is UP's

turns. Slow speed control is outstanding the conservative airframe nose angle of mes reduces any tendency to tip stall in turns. nie'rfnrmino hang glider design based on the

The SIU is "tresl11·t:>tt.f h<•· bo;ird" design; it underwent

for over 18 months before the first pnJdtiction model was relensed. It footures nose configuration that can he qu1c1<:1y ,,c1Jusledl to suit conditions and this feature of ''aclju,,tabilitv" ing edge an Four

SPECIFICATIONS

irnpressive

the Ultrnlite

ft. 185 sq. ft. S.54 . . . . . . . . . . 20 ft. ... 11 ft.

. . . . . . . . . . . 2 fl weight . . . . . . . . . . . . . . . . 43 lb . . . . . . . . . . . . . . . . . . . 140-195 lb.

malerials: aircraft aluminum & Dacron Stall speed .. . Max. speed ... .

PERFORMANCE**

6+ 4.3 fps

. 12 mph 38 mph **The perforn1,111ce fignres

In the fall of 1974, 19-year-old Roy Ham.1ard deve loped the Dragonfly. Ii was his second tip kite, the

SPECIFICATIONS .. 30 ft. 9 in. 138 sq. ft. . . . . . . . . . . 6.8 ft.

.. S4 in . . . . . . . . . . . . . 50 lb. . . . . . . . 125-200 lb. loading . . . . ... 1.3-1.8 lbs./sq. fl. weigh! . . . . . . . . . . . . . . . . . . . 250 lb. surface reflexed Malerials6061 T6 2024,T3 aluminum

PERFORMANCE . . .... 8 (a) 20 mph ..... 3.3 fps (a) 18 mph speed . . . . . . . . . ........... 16.5 mph characteristics: Complete break with full lateral stability with no tendency to yaw or fall off on winn tip. Recovery within 30 feel altilude with proper technique. Control c1! minimum speed: Full control in all 1,ilh slight increase in pitch sensitivity.

OTHER Designer No. built from plans No. still active ... Manhours ..

...

Bill Wolf . 6 known . 6 known . 60

Valkyrie is a single surface, cable-stressed, tail-less monoplane of constant chord and straight planform wing-tip drag rudders for directional lateral control with pitch control achieved throunh weinht . It assembles in 15 minutes or Jess tools and completely self-launchable. It is stable in all axes with ;, high degree of control and is soarable in winds of 12 15 mph. in the "Flatlands", designer Bill Wolf inspired to build a high performance hang glider with a glide ,rngle that would allow ii to fly even the slightest, smallest hills. He certainly succeeded.

GROUND SKIMMER

The Velderrain hanu glider a standard Roqallo with the exceplion that it is built with an 86° and the leadinn ednes are shorter than keel for qreater stability and a slower speed. It comes in 16', 17', 18', 19', 20' keel

because th(~re

them at this time.

Slrur:luriil spruce, plywood, wire hracinfl fabric covi•rin<J

PERFOHMANCE

Conslrnclion of the V,J-11 l'l40, con"plr:tcd flown lhe by Volmer ,Jensen, dozen ,iliders, s;,ilnlaoes, <11rplanes. The last airplane he was an and has been flown a distance of !i times ,1ro1md lhe t11J11nn, attcr 13 !3lueprinl s onlv

fl.

JOO lb. 180 lb. 280 lb.

. ailerons, elevators & rudder

SWING WING

. :12· T' 179

fl.

6 ft. .. ' ' 1()() lb .

. . 200 lb .

. . . . :mo lb. c...c,1llrn1,. ailerons, ck~vt,tors rudder Sl:rUt:turnl m,1terials: rmihogany, popl,1r. plywood, sleel tu[Jing, ,rncl fabric covering

PEIU:ORMANCF 9 (i1l 18 mph :!()

l!i Ccms,ln1ction of llw w,1s commenced ,July of 1971, in 3\c, months and fr,sf the following weekend. This an by Volmer ,Jensen and lrv Culvt>r. 80 lest and various Jo make it ,md more crnr1troll,1ble, flew it over a :34.foot hi\Jh ridge, with c1 23" where all types of hanq had been the year. He broke records for this f!yinq 0111 of down lhc "!so rnilinlc1ininq above the with il of figure eiqhts. A com1:1lelely new concept of flight had In he main

fained in Ihe design of this slow flight aircraft. Tight can be made al low aliilude without causinq spiral allowing a positive rel urn lo level ed with il load factor

hill without nirryin!i lhc It con the !railer and in 30 minutes. SwinqwiniJ claims In be the most ,1dvanccd of any h,m,J ,ilicler lo dale and the world's conlrollahle, mcmc,pl,me to date

toinsme landin!J.

SUNFUN SPECIFICATIONS . 36.ti It. 163 sq. fl. 18 fl. ..... 6 fl. . 110 lb. 200 lb . . 310 lb. elevators & rudder. m,1le1rials: all metal with fabric coverinq

PERFORMANCE

Siall speed

. . . 9 @l 18 mph 20 mph . . . . . . . . . 15 mph

!J(:Si\Jm!cl by Volmer ,Jensen, the concept behind was lo simplify construction and still

have perform;ince. lrvcn Culver des1n:nec1 the for slow speed flight and did the analysis with il load be tor of and a limit of all meli11 except lhc fabric, and made entirely of oluminum tubing, including I he spars . look only ~ hours apiece to mah" the stabilizer and elevator, without tll1c0 c,wcnnq. \,llust cut lhc and to cornplete

in 10 minutes, wrench, pliers or screwdriver (if bolts are used). Wilh and lifl slruls, lhe Sunfun ;ippealinq the ~1A>inc1wrnq, lapernd and ca1:1lilev1?rt!:d IAllll!J, rim the sill'ne bcec1t1se the hi;1her ratio of Sunfun overcomes th<c draq of lhe struts. So, homcbuildns who prefer to worl< wood would lhc while who like with prefer

DECEMBER

GUIDE TO ROGALLO FLIGHT-BASIC,------··----·""-··---, because it has the basic information a flyer should know. Written flyers, officially by USHGA, HMA, and PFA.

you into the sky with and teach you as much as our combined flying Please write or ca II us more information.

FLIGHT REALITIES (714) 298·1962 1945,CAdams Avenue San CA 92116

plus 50¢ handling (USA)

LION PUBLISHING OMPANY P.O. Box 836 National Ca 92050 (Calif. residents add 6% sales tax.)

the

what this all means to ycm is better performat'lc() f:::;or

lnforrnntion on Sun \JI,

SUN SAIL CORP. 675:1 E, 47th Ave. Sun Sail Corporation

and ,H:ccssorics irioot H.M.A. Cla$s 1

Sail billow ... Structural ma\eri<1ls: 6061·T6 aluminum and Dacron

WASP

Stall speed charncleristics: No enters stall ,iradually; does not drop nose tail in stall. Cc,nt1·ollabilit, at min. speed: Very floated in partial conirol.

OTHER ft. ft. fl, ]6 ft. ........ 50 lb. .... 120 220 lb. ...... 0.9 l psf .. 40,50 ............ 90°

1'77

. . . 240

st ill active .

The Blue Wasp was

PERFORMANCE

Max sink

r, (iil 20 mph .. very low at about 18 mph

pcrforrnance in mind. It has very also pilot safety lines for nr,,n,>fhnnr The Wasp soared for hours, 40 minutes on

7Ei ft. fL

.. 20.5 fl. .............. 17.S ft. .... 4S lb . . l60·l80 lb . . ' 90°

3b°

7S ft.

Area . . . . . . . . . . . . . . . . . . . . . . . . 252 sq. ft. ratio.. . . . . . . . . . . . . . 3.S 1 ed,ie . . . . . . . . . . . . . . . . . 21 ft. Keel . . . . . . . . . . . . . . . . 17 ft.

Empty weiiJht Pilot wei,i\,t Nose an,ile. Sail billow.

feature Jl/," .049"Y%" .049", .083" 6061 T·6 aluminum, 3/32" x 7 steel cable (9()().lb. load), and 606] T-6 or 3003 H,14 aluminum material. The lariier World Cup desi,in and the Cup have leadin,i cdrie supports.

.?.9.S ft. ft.

..... 220

. . . . .... 20.5 ft. 19 ft. . . . . . . . . . . 41 lb . . 150200 lb. ' 92° .. ' "' .. 2,5°

light Strong Z-90 Comfortable Unrestricted Visibility & Hearing H.MA. I 11MA. S.C.O .C. Approved

452-0351

11661 Sorrento Suite D, San Diogo

Rd. 92121

8 8

8 8 8 8 8 8

8 8 8 ')

.............. ') ')

I-la wk .. Hawk Industries Western Kestrel, .. Swingc•r, Chuck ... Hunter Monoplane .. Icarus Bat so lrn rus II Kondor Kite Co.

Bill Bennett's Delta Wing Cliders

Skytrek Phoenix Phoenix TV.

so so

:m Sundance lB Sund,mce fl.

Bird Buildt•rs Aries

Blackbird .. Cloudmen Glidercraft Corp. Cloudm,m. Constructors of Allern.ite' Light i\ircmft COAL/\ 11 B.

14 14 14

Sun Sail Corp. Standard Sun ll.

Performer V Sunseed Cronkite Cronkite VL. Super Kitt' .. Cumulus l Cumulus Ill Cumulus V, Cumulus VI Cumulus VII ...

60 60

Smfoir

Manta Products, Inc. Mi.lnta 80

Model T

63 62

Mountain Green Sailwing

Pacific Gull

HA oe1•n:,,, .... Velderrain ..

Ridgemaster .. Cirrus. Nimbus. Firecraft Corp. Firecraft

Powell, Art Green Machine Postcursor Scott Air Craft Corp. Scott I.. Scott

Number Four

is the sdrnc rnode:l that the /\rrarnb·idc brolhers

used to s Led 1 t.hc show ilt lhr, 1915 Natiorwls. At a wi loadiuq of lbs, the

ft,, this is thP l version !:--r has cxperi

me'ntecl v,ith

in a v<lrit:d

This model has spoilers which also can be simultancwusly for contrnl, llavt' took 1st pl with this the ri <Jid t Tr>l'lu ride

'.;urnrnr.r.

ever, Lht re: aro mt!d·]c1tc p·1a11s

llow-

im-

the wi n(J ur1:i1

maximum

7: I at minimum sink

to a 13 mode 1 wi 1:h more l arra dnd t\10 bu tens <lt each p, and with a shorter I and area U1e u~nter. 0V(!ri111 winy rtrcd is bo,Jt thr same.

f>rrfor-

s tab·l l i ty are enhdnced,. Proqress 01,wches ... (:h,win~Js C'VPr' on.

mancc ctnd

MPH,

to IG MPII, or a 11 man cc mode 1s kc ONLY

IN TIIREI Wxll, 17xl I sull indlvi

we i 1J 11

f ro111 100 to

lbs, Tile Cumulus V 1s available Fly

Lem of

Is I or ranee, Ca. and ·incl

nose ~?

VII will VB the be-

Cu-

0 ScJ'f l ratio of ~ l i mi and we 11 accordto pilots. r·; dee is ion on the conf ·i q ura ti on awa i ti word from i

about

s new s tancidrd

cla,;s /lo9al10 specs, Always lookinq

nleasuro rn1)r·i nq,

ot r1nd

llave Murd1l 1·1t~c~kc:nd

Cr1 l l r:d

tr1c L(1 I (:nt ll(w<:.

Cronksai l

the

is Dd ve s I

further

, Uiouqh,

to Pxplorr; Ls of

is his d/Ji l ity

relate

!:cchno l oqy.

s knm,110dqe

a11d t!iese

Morr, importan

brttrr machin(', Ddve: durinq early 197!) slartr:d con:>t.ruction uf doublc1 <>LH'~ raced rigid v1inq. It hris hnd hr(;. in th(: di r I il Ce surrnnc:r.

meet C!Xp0rirnce

hanq

qlldr.r

l 1\'.;p i rr1 Li on

et1 rl i er

CdlTIP

his

Cronksr1i rus V.

and the

r cd··

ll I qhr;r

t io (I, fl), strncLion1 IPss

L1\11d !wen c.;o Keep up t.hc:

keep 111c1k i nq ()Ud l j ty llldCh i rlPS, anrl keep Uw flyiny st1fc 1•mrk,

ki I I i I'S <:,I) ti!) COl'll)l i 1,rr:nts. lhank,,,

Bob

r I i qh t" on know

mi CJ 11 l l i kc lo th(: qirl who ql idinq i L VlilS linr1 Trefethen, who r1e1v fl(;xi flier Lo win i11 the i nternd Li ona I 1vornen!:. cl dL K(lssc:11 lr1s1 spoke about and

sprinq.

The

d1r1p

spok(' is L·/ 1 s -;a i lmdkt:r and part ownC>r Miku Huel:L(~r.

moclitiPd aido·i l !1r up 10 111ins Unlike tlir

rus it has spo·il ql path control vwll dS br!i coordi trd wi 1:11 the p rudder, 1 Roll conlrol is ou

has

is de·-

tho had vi DUS place in

thr•rr a re: no plans to llldnul dcturt'. it in the forseeablr future,

rh-is

Cronksdi l J fl own by ilave Cronk at 111 aya drl Rey,

rm~et

d l l

ovc r

Carwda in tile

and

ca111e

for

Dave: si~vtirdl we~c~ks afLer h·i s 3-month tour of 1L1·~

lie llad ber,n Lhr•rc•

out

id i nq

his wi Lh no st;rv·i vors. L i rnr ~) f1oh Ski nnnr Mi kr bi de and Stt:vc Wi I While in Japani Dt1v() hdd tli<Jilts includi drop, but wra tfwr never coopcra tc•d for Mt l'uj i j

scric!'.; fr1 ope! in

mancP

, f"ipprr ·For

wi 11 h(' n:r1dy Lo providinq yn11 with r1 rH:w ql id(~r. di

rnance, Inc. f'l yi nr; and fias bCt'n

the co1npany ttlmost sinct: i nninq in Cdrly 19/? \.•1as r1n cxci l:in~J rcwdrd for srnnellody 1vlw