Deep Dive BFM Intro Gouge Sheet For SLUF: Thrustrequired=Dtotal= Dparasitic + Dinduced Where Dparasitic=(1/2)ρV2SCD0 and ρ= density, V=velocity, S=wetted area, CD0=drag coefficient when lift= 0 And Dinduced= 2kW2/(ρV2S), k=1/(πeoAR), W=weight, S=wing span, eo=efficiency factor, AR=aspect ratio Or in plain English, total drag is dependent on: Configuration (gear, flaps, weapons,etc): CDo Wing Geometry: S, eo, AR, k Altitude: ρ Weight: W