Question

When the angle of attack of the cone with free stream flow is greater than the shock wave angle where is the vortical singularity present?

(a) On the windward surface

(b) Away from the surface

(c) Inside the conical surface

(d) On the leeward surface

I have been asked this question in unit test.

I would like to ask this question from Cones at Angle of Attack in division Three-Dimensional Flow of Aerodynamics

Answer 1

The correct option is (b) Away from the surface

Best explanation: When the angle of attack of the cone with free stream flow is more than the shock wave angle, the flow converges at a point that is not on the surface, rather it is slightly away. When the angle of attack is less than the shock wave angle, the vortical singularity lies on the windward surface.