An ultralight airplane has a wing with an aspect ratio of 5 and with lift and drag coefficients corresponding to Fig. 11.24. The planform area of the wing is 200 ft². The weight of the airplane and pilot is 400 lbf. The airplane flies at 50 ft/s in air with a density of 0.002 slugs/ft³. Find the angle of attack and the drag force on the wing.

In figure 11.24

Transcribed Image Text:

1.20 A=2 =7 1.00 A= =s- A = = 3 0.80 CL 0.60 0.24 0.40 0.16 Cp 0.20 0.08 12 16 Angle of attack, a, degrees