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← ScienceWhich risk increases when a turbojet engine operates beyond its design Reynolds number?
A)Increased compressor blade resonance fatigue✓
B)Enhanced laminar flow, reduced drag
C)Improved thermal boundary layer insulation
D)Higher rate of fuel purification
💡 Explanation
Increased turbulence results because exceeding the Reynolds number transitions flow dynamics from laminar to turbulent, a condition that induces unsteady pressures and vibrations on compressor blades. Therefore blade resonance fatigue elevates quickly, rather than decreased drag from stabilized airflow.
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