Question

A state with flow separation and reducing lift at a high angle of attack is___

(a) Climbing

(b) Take off

(c) Landing

(d) Stall

This question was addressed to me in class test.

I need to ask this question from Viscous Flow topic in section Incompressible Flow over Airfoils of Aerodynamics

Answer 1

Correct option is (d) Stall

Best explanation: Stall is characterized by a reduction in the lift at high angles of attack, i.e. when the angle of attack increases more than the critical angle of attack. The flow is no more attached and flow separation occurs.