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Helicopter blades have large diameter.

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+1 vote
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in Aerodynamics by (773k points)
Helicopter blades have large diameter.

(a) True

(b) False

This question was addressed to me in a national level competition.

My doubt is from Blades and Propellers topic in section Helicopter Dynamics of Aerodynamics

1 Answer

+1 vote
by (720k points)
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Best answer
The correct choice is (a) True

The best I can explain: One of the main functions of helicopter is to hover. This leads to higher power requirements due to high thrust force generated. For this, large diameter rotor blades are used as it results in lower downwash for higher thrust.

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