Secretary of Commerce Herbert Hoover (not pictured) inspects De Bothezat helicopter at engineering division of McCook field in Dayton,Ohio. Dr. George De Bothezat sits in the pilot seat and lifts off in the helicopter sometimes called the Jerome-de Bothezat Flying Octopus, with four rotors, built for the U.S. Army Air Service. It hovers a few inches above the ground. Men stand on all sides of it to help stabilize it. Assistant to George de Bothezat, Mr. Eremeff pilots the helicopter in another test.
A safety seat for pilots tested at Wright air field in Dayton, Ohio. Men strap a dummy to a seat and it is hoisted on board a plane with a crane. Men pull a string and the dummy is tossed up in the air to safety. Dummy falls into a net erected nearby.
Development of air power. The National Aeronautics Association (NAA) annual races in Dayton, Ohio. A small aircraft flying at high speed around pylons at an air show. A large crowd in the grandstands to watch the races.
Five YG-1B early helicopters are pushed out of hangar by ground crewmen. Ground crewmen lock rotor blades into position for flight. Three YG-1B auto-gyros taking off from a grass field at Wright-Patterson Air Force Base in Dayton, Ohio. Views of five YG-1Bs in flight, then two auto-gyros land.
A toy parade in Dayton, Ohio. Adults and children gathered for the toy parade. Decorated floats and toys move past the crowd during the parade. Clowns aboard the decorated floats. A man rides a dummy horse. Well decorated floats move past a large crowd on either side of a street. A man dressed as Santa Claus waves to a large crowd from the top of a building.
U.S. Army Air Services maneuvers of First Provisional Air Brigade at Wilbur Wright field in Dayton , Ohio. Nearly 44 airplanes including DH-4 aircraft of the U.S. Army Air Corps 1st Provisional Air Brigade lined up on the field. Aerial view of the airfield with aircraft lined up for maneuvers.
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