How much does Newtons 3rd Law account for Lift in %?

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I would like to know how much of a % does newtons 3rd law (action / reaction) account for lift of a chopper.. i would also like to know this for Bernoulli's principle..
Can you give a source to back it up?

I cant find an answer any where
 

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  • #2
rcgldr
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I would like to know how much of a % does newtons 3rd law (action / reaction) account for lift of a chopper.
100%.

Bernoulli's principle.
Applies above and below the rotor, but not across the plane of the rotor, because energy is added to the air (work is done). Link to NASA article for propellors, a similar case:

NASA_propeller_analysis.htm
 

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