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An aircraft is flying with Mach 2.0. Calculate recovery temperature if ambient temperature is 305K. Assume recovery factor is 0.85.(a) 512.4K(b) 253.2K(c) 100°C(d) 400°CI had been asked this question in an international level competition.My question is based upon Configuration Layout Considerations topic in portion Configuration Layout Considerations of Aircraft Design

Answer»

Correct answer is (a) 512.4K

Explanation: GIVEN, Mach number = 2.0, AMBIENT TEMPERATURE T1 = 305K

Assuming the recover factor as 0.85 and for such CASE,

Recovery temperature T2 = T1*(1+0.17*M^2)

T2 = 305*(1+0.17*2*2) = 305*1.68 = 512.4K.



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