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.
Wrights Brothers are honored in Dayton, Ohio. A still photograph of the Wright Brother's home in Dayton. Orville Wright flanked by army, navy and civilian representatives. A funeral ceremony in a graveyard for Wilbur Wright. Various dignitaries walk up to a tombstone. Men place wreaths on the grave of Wilbur Wright. A street in Dayton. Wright's home and bicycle shop in Dayton. A model of Wright Brothers' first aircraft on a stand. The engine of the first Wright aircraft.
View of rotor blades revolving on a vertical axis above the fuselage. Engineers working on Plane-Radical lifting screw and inspecting the pitch variation of De Bothezat helicopter during its development at McCook Field in Dayton Ohio, under a contract with Russian immigrant George de Bothezat issued by the U.S. Army Air Service. Engineers inspecting at fuselage. Professor George de Bothezat, the inventor of the helicopter, Lieutenant Colonel J.E.Fetchet and Major T.H.Bane discussing. Professor De Bothezat and four officers sitting on cart to which the screw is attached are lifted as the large rotor turns. The rotor went on to be used in the so called Jerome-de Bothezat Flying Octopus helicopter that featured four 6-bladed rotors.
Ominous clouds in sky during Super Outbreak of tornadoes in April 1974 that hit regions in many states, including Illinois, Indiana, Michigan, Ohio, Kentucky, Tennessee, Alabama, Mississippi, Georgia, North Carolina, Virginia, West Virginia, and New York; and the Canadian province of Ontario. Xenia Ohio city manager Bob Stewart seen talking to his wife. A man checks storm on radar during a tornado in United States. A man rolls a machine to other room. During recording, a man shows areas that come in tornado's range. Sheriff dispatcher gives warning to all police and sheriff personnel about the sighted tornado in Montgomery County. Dick Burroughs on phone at Miami Valley Disaster Services in Dayton Ohio. A freigh train entering Xenia, Ohio just as tornado, scene via a student's 8mm camera comes into view and bears down on Xenia Ohio. Tornado hits the city of Xenia. Reenactment as city manager's wife takes call from him warning of tornado and she heads for basement cover. U.S. Air Force dispatches emergency medical convoy from grounds of base hospital at Wright Patterson Field. View of medical staff from the base mobilizing with ambulances and heavy construction battalion. Box 21, an emergency group responds to siren. People gather and discuss their plan include Military Personnel. A man explains situation. Rescuers save victims from tornado and take away dead bodies to temporary morgues.
The 25th birthday of the Wright Brother's first flight in Dayton, Ohio. A line of early model aircraft on an exhibit. A model of an early Wright brothers airplane. Two men sitting at the controls of the aircraft (which is a modified Wright Model B that is now located in the United States Air Force Museum near Dayton Ohio).
Development of air power. Bombing tests on USS Alabama in September 1921 in the United States. USS Alabama anchored in water. A soldier arms and works on fuse mechanism of a large bomb swung underneath a large bomber. A standard-Handley Page 0/400 bomber in flight to the right over water. A United States Army Air Corps Dayton Wright DH-4 aircraft in flight to the left dropping a bomb. The bomb explodes on the ship. A phosphorus bomb explodes on the ship and engulfs the entire ship in smoke. The ship explodes. Part of the superstructure topples off into the water. The ship lists over a side with one of the towers bent over and lying in the water.