1922 Pescara helicopter built by Argentinian engineer Raul Pateras Pescara.
Previously:
Personal air landing vehicle gyrocopter - GIF
Focke-Achgelis Fa 225 rotary wing glider - photo
Sikorsky-Boeing SB-1 Defiant helicopter - GIF
Folding portable helicopter - photos
QH-50 Dash anti-submarine helicopter - photo
Helicopter with intermeshing rotors - GIF
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