NCAA CPL (H) Theory Practice Questions - NCAA Commercial Pilot Licence (Helicopter) Theory Exam (Nigeria) Exam

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What aerodynamic condition imposes the absolute forward speed limit (Vne) on a helicopter due to retreating blade stall?

High forward speed causing the retreating blade to exceed its critical angle of attack as relative wind decreases High forward speed causing supersonic shockwaves on the advancing blade tip exclusively Low rotor RPM causing the advancing blade to stall near the root hub Tail rotor overspeed caused by high forward airflow velocity

Correct Answer:

High forward speed causing the retreating blade to exceed its critical angle of attack as relative wind decreases

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