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Double rotor effect on the lift

Double rotor effect on the lift

Double rotor effect on the lift

(OP)
Is there someone who know where I could to found a formula about the interraction between two rotor supperposed like the one for the helicpter Kamov.

RE: Double rotor effect on the lift

http://www.eaa.org/     the people here can send you where you need to go they have info on just about every flying contraption ever thought of  good luck

RE: Double rotor effect on the lift

Stepniewski developed equations for twin rotors in hover.  Johnson (page 120) indcates that coaxial rotors required 20% more power due to interference effects.

RE: Double rotor effect on the lift

This page may lead you to some of the information you are seeking.  [http://www.unicopter.com/0891.html]

The book 'Principles of Helicopter Aerodynamics' by J. Gordon Leishman probably has the most current 'western' calculations on the co-axial configuration.

Hope this helps.  

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