An aerofoil shaped plane wing is being tested in an wind tunnel. |
Choose the most appropriate depiction of pressure over aerofoil |
A)
B)
C)
D)
Correct Answer: D
Solution :
As air passes around plane wing, |
Due to shape of aerofoil, velocity of air layers over above surface of wing is more than lower surface of wing. |
As, \[\frac{1}{2}\rho {{v}^{2}}+p=\text{constant}\] |
When v velocity increases, pressure will fall. So, a pressure difference acts on lower surface of wing causing lift of plane. |
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