How swept wing actually works?
Hi,
Fellow aviations, it's me again.
I am puzzled with the question how swept wing works. I read a book called Ace the technical pilot interview and found a lot of things inside are wrong, and not clear enough. I also used wikipedia to aid my studies, but it's still not enough.
What wikipedia says:
"Suppose a cylindrical wing
(constant chord, incidence, etc.) is placed in an airstream at an angle
of yaw - ie., it is swept back. Now, even if the local speed of the air on the upper surface of the wing becomes supersonic, a shock wave cannot form there because it would have to be a sweptback shock - swept at the same angle as the wing - ie., it would be an oblique shock. Such an oblique shock cannot form until the
velocity component normal to it becomes supersonic."
Why shock wave cannot form there because it would have to be a sweptback shock?
What does it mean by "velocity component normal to it becomes supersonic"?
So sweeping a wing make the shock wave can't form, then it backs to the question, why and how can it do that?
I have been thinking about it for 2 weeks!
Thank you very much!