Aircraft Performance Substantiation: Worked-Out Examples (Bizjet)
This section computes aircraft performance to substantiate capabilities as required by the FAR and the operators. Table 13.4 gives the speed schedules appropriate to an aircraft takeoff; aircraft drag polar is given in Figure 9.1. The wing area, Sw = 30 m2 (323 ft2) and the MTOM = 9,400 kg (20,723 lb). Assuming that 20 kg of fuel is consumed during the taxi, the MTOM for the takeoff estimation = 9,380 kg (20,680 lb), and wing-loading, W/Sw = 64 lb/ft2. The known stalling speed is computed by using the following:
V 2 x MTOM I 2 x 20,680 /53,847.6
stal1 = pSwCl = 0.002378 x 323 x Cl = CL
Table 13.8 provides the Bizjet aircraft data generated thus far. To make the best use of the available data, all computations are in the FPS system. The results subsequently can be converted to the SI system.