Question

Experimental work on hypersonic bodies involves testing Mach number, Reynolds number and temperature simultaneously.

(a) True

(b) False

I had been asked this question during an interview.

Question is from Hypersonics and Computational Fluid Dynamics topic in division Numerical Techniques for Nonlinear Supersonic Flow, Elements of Hypersonic Flow, Couette and Poiseuille Flow of Aerodynamics

Answer 1

Right answer is (b) False

Explanation: When carrying out pure experiments on hypersonic bodies, the tests carry out either involves Mach number, Reynolds number or temperature attained. All the parameters cannot be tested at the same time or same testing facility. Thus the data procured is always a compilation of multiple data sources.