Question

It is desired to design an air plane with a lift of 1000N per square meter of wing area . If the velocity of streamline flow past the lower wing surface is 100 meter per second , then the required velocity over the upper surface is ( given density of air is 1.3 kg/ metercube)

Answer 1

Velocity at lower wing = 100 m/s.

Velocity at upper wing = v m/s

Density of air = 1.2

By bernoulii's theorem,

P +½ 1.2(100)^2 = P' + ½ 1.2 (v) ^2

V = 107.4 m/s

Answer 2

Answer:

answer is 107.4 by applying theorm