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← ScienceWhich risk escalates when a high-bypass turbofan engine's bleed air system excessively cycles?
A)Compressor stall propagation increases rapidly✓
B)Turbine blade creep accelerates non-linearly
C)Combustion chamber flameout risk grows
D)Fuel injector fouling reaches a threshold
💡 Explanation
Repeated cycling of the bleed air system initiates flow instabilities, triggering stall. Boundary layer separation increases, leading to compressor stall propagation because the surge margin erodes; therefore recovery diminishes rather than sustaining steady operation, which also prevents flameout.
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