Question

Coefficient of pressure over the forward section of the hump in supersonic flow is negative.

(a) True

(b) False

I had been asked this question in examination.

I want to ask this question from Linearized Pressure Coefficient in division Linearized and Conical Flows of Aerodynamics

Answer 1

Correct choice is (b) False

The best I can explain: The coefficient of pressure over a slender body in a supersonic flow, provided the inclination is small is given by

Cp = \(\frac {2θ}{\sqrt {M_∞^2 – 1}}\)

The angle θ is positive when measured above the freestream horizontal and negative when measured below the freestream horizontal. Due to this reason, the coefficient of pressure in the forward portion of the hump is positive.