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counter rotating rotors

counter rotating rotors

counter rotating rotors

(OP)
hello and thanks for any help? i am wanting to build a counter rotating rotor helicopter. but i dont know how or where i can find the drawings for the rotor shaft and bearings? can any one help me with this ?

RE: counter rotating rotors

You mean _coaxial_ counter- rotating?  

Not impossible, but generally a bad idea.  See 'flap hinges'.  See 'blade flex'.

Boeing Vertol did it with rotors displaced radially, to opposite ends of the aircraft.

Flettner did it with adjacent intermeshing rotors.

Google found a _model_ with coaxial counter- rotating blades that you can buy for less than $200.  Is that what you wanted?

Mike Halloran
Pembroke Pines, FL, USA

RE: counter rotating rotors

GregLocock (Automotive)
I should have said in the USA.I forgot about the Russians.
B.E.

RE: counter rotating rotors

tbuelna (Aerospace)
The air scooter is a development of the eagle's perch system for the ultralight market.
B.E.

RE: counter rotating rotors

you will need a lot more drawings than that

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