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Vinony
Category

Slowed rotor

page 1
Eurocopter X³
experimental high-speed compound helicopter
Sikorsky X2
experimental high-speed compound helicopter with coaxial rotors
Fairey Rotodyne
1950s British compound gyroplane
McDonnell XV-1
1954 experimental compound gyroplane model by McDonnell Aircraft
A160 Hummingbird
unmanned aerial vehicle by Boeing
Pitcairn PCA-2
autogyro developed in the United States in the early 1930
Carter PAV
Two-bladed compound autogyro