PPRuNe Forums - View Single Post - Why do helicopters sound so "choppy" on windy days?
Thread: Why do helicopters sound so "choppy" on windy days?
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Old 2nd Aug 2018, 08:12
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Pilot kzn
 
Join Date: Aug 2018
Location: South Africa
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Dis-symmetry of lift I'd say is the cause. Wind gusts temporarily increase lift on the advancing blade which causes blade flapping and increased noise. This is compounded by decreased lift on the retracting blade.
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