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Which outcome occurs when the Reynolds number exceeds a critical threshold within a subsonic aircraft's intake duct?

A)Increased boundary layer flow separation
B)Decreased diffuser pressure recovery
C)Enhanced laminar flow attachment
D)Minimized frictional duct energy losses

💡 Explanation

Increased boundary layer separation leads to stall because elevated Reynolds number indicates turbulence through viscous forces triggering adverse pressure gradients and flow instability, therefore separation occurs, rather than idealized laminar flow.

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