Harry S. Truman sworn in as President of United States of America at White House after the sudden death of Franklin D. Roosevelt. Chief Justice, Harry S. Truman and other dignitaries at White House. United States flag flying at half-mast in honor of the death of Franklin D. Roosevelt. Also views of crowd gathered for the funeral of U.S. President Franklin Roosevelt. Funeral procession moves slowly through streets of Washington DC. Men and women weeping. Funeral parade reaches the final resting place at Hyde Park, New York.
Test flight of a Berliner helicopter by Henry Berliner. A hybrid airplane helicopter built by Emile Berliner and his son Henry Berliner is shown during a Washington DC test flight. It rises and move forward in short hops. The lighter weight design and high incidence large camber lower wing indicates it was likely built in 1924 or 1925 as one of the last Berliner models, following after a triplane version that was test flown in February 1924.
Test of an early helicopter ornithopter aircraft design in Chicago. A helicopter with five rotating blades that turn sideways in a fashion like a paddle boat. Engineer trying to fly a helicopter and is examining the controls from the tail of helicopter. It never leaves the ground.
De Bothezat helicopter with four rotors rotating at each end of its arms. The experimental quadrotor designed by George de Bothezat is seen in flight at McCook Field in Dayton Ohio. The helicopter rising just above the ground and moving from side to side but remaining just aloft, then descending while a man stands nearby.
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.
At McCook Field in Dayton, Ohio, U.S. Army Air Service engineers inspecting Plane-Radial screw (helicopter lift mechanism) of George De Bothezat, a Russian immigrant working under contract with the Army. General Mason M. Patrick, Chief of the Air Service, inspects the radial screw. 1000 pounds of weight is lifted by lifting-rotor utilizing 35 horsepower. View of revolving rotor blade and officers in background. Brigadier General William Mitchell ( "Billy Mitchell" ) also inspects the work and discusses with George de Bothezat. Test flight for then Secretary of Commerce Herbert Hoover of the Jerome-de Bothezat Flying Octopus, equipped with four 6-bladed rotors. George de Bothezat in the pilot seat as the large helicopter lifts. It is held from going up very high and stabilized by men all around it. Another test with de Bothezat's assistant Mr. Eremeff in the pilot seat.
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