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Which outcome occurs when the hydraulic fluid velocity in an aircraft's actuator reaches values exceeding specific Reynolds number thresholds?

A)Increased laminar flow stability rapidly
B)Increased separation by streamlines only
C)Increased turbulent flow and energy loss
D)The pump outlet pressure decays steadily

💡 Explanation

Turbulent flow dominates fluid behavior above the critical Reynolds number because the inertial forces overwhelm viscous forces (transition to turbulence). Therefore, increased turbulent flow, hence, energy dissipation, rather than stable laminar flow happen at very high pump pressure.

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