1.

What will be the temperature of aircraft flying in air where the stagnation temperature is 288.15K and mach number is 1?(a) 250.15K(b) 240.125K(c) 300K(d) 270.18KI had been asked this question by my college professor while I was bunking the class.My question is from Measurement of Mach Number in section Atmosphere and Air Data Measurement of Aircraft Performance

Answer»

The CORRECT choice is (b) 240.125K

To explain: The ANSWER is 240.125K. Given T0=288.15K and M=1. By substituting the values in the FORMULA T0=T\(\Big[1+\FRAC{\gamma-1}{2}M^2\Big]\)

On substituting 288.15=T[1+\(\frac{1.4-1}{2}1^2]\)

T=\(\frac{288.15}{1.2}\)

T=240.125K.



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