Shows the rotor blade for the de Bothezat helicopter being tested during its development at the engineering division of McCook Field in Dayton,Ohio. Inventor George de Bothezat was hired by the U.S. Army Air Service in 1921 to produce a helicopter. This footage shows various tests being conducted: First a test of the " plane radical lifting screw ". The rotor is seen moving at high speed and lifting the front of the cart to which it is anchored. Second is a test showing the pitch variation mechanism. Next sequence show U.S. Army Lieutenant Colonel J.E. Fechet, Major T.H. Bane, and the inventor of the helicopter George deBothezat discussing with each other. De Bothezat points to the aircraft mechanism as he talks to the officers. De Bothezat and four Army officers sit in the helicopter to test the lift capability. The rotor rotates and lifts the front end of the cart with the 5 men seated in it, absorbing 30 horsepower.
This historic stock footage available in HD video. View pricing below video player.
Type | Size | Price (USD) Comprehensive All Media License |
Price (USD) Digital-Only License |
---|---|---|---|
HD Master, Broadcast-ready (1920x1080, unmarked) | 2884 MB | $225.00 | $79.00 |
HD Screener (1920x1080, full-res with timecode) | 2884 MB | FREE or $4 (see below) | FREE or $4 (see below) |
Proxy (320x240, low-resolution, watermarked) | 46 MB | FREE or $4 (see below) | FREE or $4 (see below) |