Question: Consider a two-dimensional flat plate inclined at a positive angle of attack of 10 degrees in a supersonic air stream of Mach 2 with pressure of 50 kPa and temperature of 250 K. Assume that the length of the plate is 1 meter.
(a) What is the angle of the oblique shock?
(b) What is the pressure acting on the lower surface of the plate?
(c) What is the pressure acting on the upper surface of the plate?
(d) What is the lift? What is the drag? (Provide the formulae for lift and drag, and then substitute the numerical values into them to obtain the numerical predictions.)
(e) What are the lift and drag coefficients?
(f) Solve the same problem for angles of attack of 5 and 15 degrees. What is the slope of the versus angle-of-attack curve for angles in radians?