A subsonic inlet is in M0 = 0.86 cruise with external

diffusion characterized by the inlet mass flow ratio parameter,

MFR=0.89, which is the same as the inlet capture area ratio,

A0∕A1. Assume an isentropic flow with 𝛾 = 1.4 and cp = 1004

J/kg.K, to calculate

(a) the Mach number at the inlet lip, M1

(b) the external static pressure ratio, p1∕p0, i.e., as the

result of external diffusion

(c) the external velocity ratio, V1∕V0, i.e., as the result

of external diffusion

Solution.pdf

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