Slate refers to Leinweber brothers helicopter in Chicago. View of their helicopter being moved out of a hangar in 1922. Closeup of helicopter controls being demonstrated. Next, a helicopter of M. Douheret, of France, is shown in 1919. Men stand nearby and watch its rotors turn in the breeze. Engine cylinders are clearly visible. Pilot sits in the machine and adjusts controls. Next he stands and starts engine. Suddenly, the running helicopter tips over and he runs for safety but returns to shut the engine down. In a second attempt, the pilot is again seen standing next to the machine, with its engine running. And, again, he must run to safety, as it tips over. This time it stops running by itself, and other men help him tip it back upright.
Ground testing of the de Bothezat quadrotor helicopter at McCook Field, hangar in background. Helicopter contraption demonstrating lift and movement on airfield. Men hanging on to side of helicopter assisting with its early flight.
Workers working at an Indianapolis plant where Allison liquid-cooled motors are being fabricated and tested for aircraft engines in World War 2. View of a rotating fan with the help of a motor.
Shows Pitcairn PA-36 autogyro being tested at Washington D.C. Pitcairn PA-36 takes off. Aerial stunting of Pitcairn PA-36.
Army officers and Congress leaders looking over Pitcairn PA-36 autogyro aircraft. Pilot in cockpit of the plane. Plane hovers and flies at short distance. Plane lands.
View of cars and crowd at a Boeing plant in Seattle. Aircraft workers and their families at Boeing plant inspecting B-17Ds. 7th Bomb Group B-17Ds in flight and formation over Mount Rainier. View of glaciers. (World War II period).
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