Quote:
Originally Posted by bf-110
Autogyro is an helicopter wannabe.
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No, it's not. Completely different design.
A helicopter uses a propelled rotor to push air down to generate lift and thrust.
An Autogyro has a propeller that moves the aircraft forward, while the comparably slowly rotating "rotor" acts as a rotating wing and provides lift by air resistance.
You can notice the difference in the axis of the rotor in forward flight:
A helicopter has the rotor tilted forward to provide lift and forward thrust.
The autogyros rotor is tilted aft to provide more air resistance against the airstream to generate lift.
@ Friendly_flyer:
I doubt limited material is the primary problem.