GATE_AE_2027_MOCK_03_Q44
GATE 2027 Aerospace Engineering All-India Master Mock 03 (Flight Dynamics, Controls & Space Trajectories)
MCQ · 2 Marks
Aerodynamics & Fluid Mechanics • Compressible Flow & Shocks • Rayleigh and Fanno Flow
In 1D Rayleigh flow (frictionless flow with heat addition in a constant-area duct), adding heat to a supersonic flow causes:
(A) Mach number to decrease towards 1.0 and static pressure to increase
(B) Mach number to increase further into hypersonic regime
(C) Stagnation temperature to remain strictly constant
(D) Static density to decrease to zero
Answer Key:
A
Step-by-Step Verified Solution
### Solution: Heat addition accelerates subsonic flow toward M=1, but decelerates supersonic flow toward M=1 while increasing static pressure (thermal compression). Correct: A.