Hoppi-Copter Rotary Wing Aircraft. A Korry Film Production, Seattle, Washington

Описание к видео Hoppi-Copter Rotary Wing Aircraft. A Korry Film Production, Seattle, Washington

A c.1945 7-minute black-and-white silent film showing the transport, take-off and flying qualities of the Hoppi-Copter individual 'strap-on' helicopter.

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