ATLAS V GPS IIF-7 MISSION A United Launch Alliance Atlas V 401 vehicle will deliver the GPS IIF-7 satellite to semi-synchronous circular orbit. Liftoff will occur from Space Launch Complex 41 at Cape Canaveral Air Force Station, FL. The Navstar GPS is a constellation of satellites that provides navigation data to military and civilian users worldwide. The system is operated and controlled by the 50th Space Wing, located at Schriever Air Force Base, CO. GPS utilizes 24 satellites, in six different planes, with a minimum of four satellites per plane, positioned in orbit approximately 11,000 miles above the Earth’s surface. The satellites continuously transmit digital radio signals pertaining to the exact time (using atomic clocks) and exact location of the satellites. The GPS IIF series have a design life of 12 years. With the proper equipment, users can receive these signals to calculate time, location, and velocity. The signals are so accurate that time can be measured to within a millionth of a second, velocity within a fraction of a mile per hour, and location to within feet. Receivers have been developed for use in aircraft, ships, land vehicles, and to hand carry. As a result of increased civil and commercial use as well as experience in military operations, the USAF has added the following capabilities and technologies to the GPS IIF series to sustain the space and control segments while improving mission performance: – Two times greater predicted signal accuracy than heritage satellites. – New L5 signals for more robust civil and commercial aviation. – An on-orbit, reprogrammable processor, receiving software uploads for improved system operation. – Military signal “M-code” and variable power for better resistance to jamming hostile environments, meeting the needs of emerging doctrines of navigation warfare.
The ULA team is proud to be the launch provider for the U.S. Air Force (USAF) Global Positioning System (GPS) Directorate by delivering replenishment satellites aboard Atlas V and Delta IV launch vehicles. GPS IIF-7 is one of the next generation GPS satellites, incorporating various improvements to provide greater accuracy, increased signals, and enhanced performance for users. The ULA team is focused on attaining Perfect Product Delivery for the GPS IIF-7 mission, which includes a relentless focus on mission success (the perfect product) and also excellence and continuous improvement in meeting all of the needs of our customers (the perfect delivery). We sincerely thank the entire team, which consists of the USAF, The Aerospace Corporation, ULA, and major suppliers of ULA. Go Atlas, Go Centaur, Go GPS!
Jim Sponnick Vice President, Atlas and Delta Programs Payload Fairing (PLF) The spacecraft is encapsulated in the 4-m (14-ft) diameter large payload fairing (LPF). The LPF is a bisector (two-piece shell) fairing consisting of aluminum skin/stringer construction with vertical split-line longerons. The vehicle’s height with the PLF is approximately 189 ft. Centaur The Centaur second stage is 10 ft in diameter and 41.5 ft in length. Its propellant tanks are constructed of pressure-stabilized, corrosion resistant stainless steel. Centaur is a liquid hydrogen/ liquid oxygen- (cryogenic-) fueled vehicle. It uses a single RL10A-4-2 engine producing 22,300 lb of thrust. The cryogenic tanks are insulated with a combination of helium-purged insulation blankets, radiation shields, and spray-on foam insulation (SOFI). The Centaur forward adapter (CFA) provides the structural mountings for the fault-tolerant avionics system and the structural and electrical interfaces with the spacecraft. Booster The Atlas V booster is 12.5 ft in diameter and 106.5 ft in length. The booster’s tanks are structurally rigid and constructed of isogrid aluminum barrels, spun-formed aluminum domes, and intertank skirts. Atlas booster propulsion is provided by the RD-180 engine system (a single engine with two thrust chambers). The RD-180 burns RP-1 (Rocket Propellant-1 or highly purified kerosene) and liquid oxygen, and delivers 860,200 lb of thrust at sea level. The Atlas V booster is controlled by the Centaur avionics system, which provides guidance, flight control, and vehicle sequencing functions during the booster and Centaur phases of flight.
MISSION OVERVIEW PMS 280C
PMS 279C
PMS 123C
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With more than a century of combined heritage, United Launch Alliance is the nation’s most experienced and reliable launch service provider. ULA has successfully delivered more than 80 satellites to orbit that provide critical capabilities for troops in the field, aid meteorologists in tracking severe weather, enable personal device-based GPS navigation and unlock the mysteries of our solar system. Reliable launch, real-world benefits.
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– 34th ULA Launch for the United States Air Force – 47th Atlas V Launch – 7th GPS Block IIF Satellite – 54th Operational GPS Satellite to Launch on a ULA Rocket
ATLAS V PRODUCTION AND LAUNCH
55 5 5
De Soto,COCA Denver, • RS-68 Engine – ULA Headquarters & Designat Aerojet Rocketdyne De Soto, CA Fabrication Center • RS-68 Engineering Engine at Aerojet Rocketdyne Brigham City,Fabrication UT • Solid Rocket Motor Fabrication at Alliant Technologies De Soto, CA Harlingen, TX Brigham City, UT De Soto, CA De Soto, CA • RS-68 Engine Fabrication at Aerojet Rocketdyne – Solid Payload Fairing, Payload Fairing • Rocket Fabrication at Alliant Technologies Denver, CO Motor • RS-68 Engine Fabrication at Aerojet Rocketdyne De Soto, CA • RS-68 Engine Fabrication at Aerojet Rocketdyne Adapter, Booster Adapter & Centaur • Brigham City, UT ULA Headquarters & Design Center Engineering Denver, CO Brigham City, UT • RS-68 Engine Fabrication at Aerojet Rocketdyne Brigham City, UT&Fabrication Adapter Fabrication • Solid Rocket Motor at Technologies ULA Headquarters Design Center Engineering • Solid Rocket Motor Fabrication at Alliant Alliant Technologies Decatur, AL Brigham City, UT • Solid Rocket Motor Fabrication at Alliant Technologies Decatur, AL Denver, CO • Payload Fairing/Adapter Fabrication Denver, CO • Solid Rocket Motor Fabrication at Alliant Technologies Decatur, AL Denver, CO – ULA Fabrication &Design Final Assembly, • Headquarters & Center Engineering Booster • Payload Fairing/Adapter Fabrication ULA Headquarters & Design Center Engineering Denver, CO Fabrication • ULA Headquarters & Design Center Engineering Centaur Tank & Centaur • Second Stage Fabrication • Booster Fabrication Decatur, AL • ULA Headquarters & Design Center Engineering Decatur, AL Final Assembly Second Stage FabricationFabrication Decatur, ALBeach, • Payload Fairing/Adapter • Payload Fairing/Adapter Fabrication West Palm Decatur, AL Palm Beach, FL FL •West Payload Fairing/Adapter Fabrication Booster Fabrication • Booster Fabrication RL10 Engine Fabrication at Aerojet Rocketdyne West Beach, FLFabrication • Fairing/Adapter – Payload RL10Palm Engine Fabrication at Aerojet Booster Fabrication Second Stage Fabrication
Interstage Adapter
Interstage Adapter
4
4 Launch Vehicle
-2.7
-00:00:02.7
Liftoff (Thrust to Weight > 1)
1.1
00:00:01.1
Begin Pitch/Yaw Maneuver
17.2
00:00:17.2
Mach 1
78.2
00:01:18.2
Maximum Dynamic Pressure
90.3
00:01:30.3
Atlas Booster Engine Cutoff (BECO)
243.6
00:04:03.6
Atlas Booster/Centaur Separation
249.6
00:04:09.6
3
Centaur Main Engine Start (MES-1)
259.6
00:04:19.6
4
Payload Fairing Jettison
267.6
00:04:27.6
5
Centaur First Main Engine Cutoff (MECO-1)
1,028.8
00:17:08.8
6
Centaur Second Main Engine Start (MES-2)
11,828.2
03:17:47.2
7
Centaur Second Main Engine Cutoff (MECO-2)
11,956.6
03:19:16.6
8
GPS IIF-7 Separation
12,242.3
03:24:02.3
Longitude (deg)
4
7 High Pressure Gas Storage Centaur
(hr:min:sec)
Perigee Altitude: 11,047.2 nmi | Apogee Altitude: 11,047.3 nmi | Inclination: 55.0 deg | Flight Azimuth: 45.8 deg
2
5 Mobile Launch Platform (MLP)
Time
(seconds)
RD-180 Engine Ignition
2
2
3
3 Bridge Crane
6 Centaur LO2 Storage 1
1
1 Vertical Integration Facility (VIF) (See inset) 2 Bridge Crane Hammerhead
Time
Event
3
Booster
8
5
• Second Stage Fabricationat Aerojet Rocketdyne RL10 Engine Fabrication Booster Fabrication • Rocketdyne Second Stage Fabrication • Second StageBeach, Fabrication West Palm Khimki,Palm RussiaBeach, FL West FL West Palm Beach, FLatat Aerojet • RL10 Engine Fabrication Rocketdyne • RL10 Engine Fabrication Rocketdyne – RD-180 Engine Fabrication West FLat atAerojet • RL10Palm EngineBeach, Fabrication Aerojet Rocketdyne NPO Energomash • RL10 Engine Fabrication at Aerojet Rocketdyne
1 Atlas Spaceflight Operations Center (ASOC) | Launch Control Center and Mission Director’s Center 2 Spacecraft Processing Facility | Spacecraft processing, testing and encapsulation 3 Vertical Integration Facility | Launch vehicle Integration and testing, spacecraft mate and integrated operations
7
6
8 Booster LO2 Storage
5
80 60
5
9 Pad Equipment Building (PEB) 10 Pad ECS Shelter
5
BOSS
40
ER
20
LION
3 Guam
Spacecraft 4-m Payload Fairing Halves
0
TDRS 041 Diego Garcia
1
Payload Transporter
TDRS 046
-20 -40
1
4
2
10
Mobile Launch Platform
Space Launch Complex 41
7
Telemetry Ground Station Launch Vehicle /Spacecraft Ground Trace TDRS Asset Geostationary Orbital Position
-80
6
3
6 7 8 -60
-135
8
9
-90
-45
0
45
90
135
All Values Approximate
Geodetic Latitude (deg)
1 1 2 211 13 2213 2 24 3 433 3 44 45 4 5
MISSION PROFILE AND GROUND TRACE