Q: Airfoils can generate lower pressures on their top surfaces than their bottom surfaces which lie at atmospheric pressure. This helps air on the bottom push the airfoil upwards. For a flying 500kg airfoil with an area of 20 m2, what is the maximum pressure on its top surface? Assume air pressure is 100 kPa. 1 Pa = 1 N/m2
A		0 Pa
B		250 Pa
C		75000 Pa
D		99750 Pa

Forces | Quantitative Skills |