I'm a beginner in airfoil design. I just came across swept-back wings. There is a point that I couldn't understand that theory.
Why is the only perpendicular component of the airflow to the wing(component parallel to chord line) affects the shockwave formation? Why doesn't the total airflow vector(spanwise +chorwise vector component) contribute towards shockwave?
Why wouldn't the shockwave form with the total airflow vector in the swept wing? I have attached the image to show my point better