1.2 — Airfoils, Pressure & Lift Generation

1. Lift on a wing is primarily produced by… A pressure difference between the surfaces Engine thrust leaking over the wing The weight of the wing Skin friction

2. Below the stall, increasing angle of attack makes lift… Increase Decrease Stay exactly constant Reverse

3. A stall occurs when… The critical angle of attack is exceeded Fuel runs low Flaps are extended Altitude is too high