1954 Kellett KH-15 Stable Mable experimental helicopter powered two hydrogen peroxide rocket engines.
Previously:
Platt-LePage XR-1A helicopter - photo and video
Bell HSL-1 helicopter - photo
Fiat Model 7002 helicopter - photos
1922 Pescara helicopter - GIF
Sikorsky-Boeing SB-1 Defiant helicopter - GIF
Hughes HX-17 heavy-lift helicopter - photos
Flying jeep Curtiss-Wright VTOL quadrotor helicopter - photo
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