A fully loaded aircraft has a mass of $3.3 imes 10^5 ext{ kg}$. Its total wing area is $500 ext{

Question

A fully loaded aircraft has a mass of $3.3 	imes 10^5	ext{ kg}$. Its total wing area is $500	ext{ m}^2$. It is in level flight with a speed of $960	ext{ km/h}$. Estimate the pressure difference between the lower and upper surfaces of the wings. ($g = 9.8	ext{ m/s}^2$)

Professor PC Thomas Classes · Answer

In level flight, Lift force $F = \Delta P 	imes A = mg$. $\Delta P = \frac{mg}{A} = \frac{3.3 	imes 10^5 	imes 9.8}{500} = 6468	ext{ N/m}^2 \approx 6.5 	imes 10^3	ext{ N/m}^2$.