Question

How to increase the critical angle of attack?

(a) Reduce the camber

(b) Increase the camber

(c) Increase the thickness

(d) Reduce the thickness

This question was posed to me in examination.

This is a very interesting question from The Cambered Airfoil topic in chapter Incompressible Flow over Airfoils of Aerodynamics

Answer 1

The correct option is (a) Reduce the camber

To explain I would say: An aircraft designer may also reduce the camber of the outboard section of the wings to increase the critical angle of attack at the wing tips. When the wing approaches the stall angle this will ensure that the wing root stalls before the tip, giving the aircraft resistance to spinning and maintaining ailerons effectiveness close to the stall.