United Helicopters, Inc. Presents the "Hiller 360"

A c.1946 12½ minute black-and-white silent film about the flying qualities of the Hiller 360.
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[@DrTWG]

Wow that is amazing film . That bird looks very nippy . I'm not a pilot or engineer but I noted those little aerofoils that were mounted on the main rotor 90 degrees to the 2 main blades - that could be pitched up and down - I wonder if that meant the main rotors were fixed . The hands-free stability seemed impressive . I presume that was an auto-rotation at 4:41 .