Where was the first take-off by a manned helicopter in 1907?
Answers:
Lisieux, Calvados, France, November 13, 1907 The pilot was Paul Cornu. He hovered a foot off the ground for 20 seconds.
The first real flight was in 1916 by Raúl Pateras de Pescara. The 1907 thing really was written off as it wasn't control able.
The real conventional "helicopter" first flight was 1931 in Russia with the TsAGI E-1 which reached an altitude of almost 2000 ft.
During 1906, the brothers Louis and Jacques Bréguet began their helicopter experiments and meticulously tested airfoil shapes under the guidance of Professor Charles Richet. In 1907, they built the Bréguet-Richet Gyroplane No. 1, one of the first mechanical devices to actually hover. The gyroplane flew for one minute on August 24, 1907 (some sources say September 29, 1907) in what is generally accepted as the first vertical flight. A 45-horsepower (33.5-kilowatt) engine provided just enough power to achieve vertical flight. However, there was no means of control or stability, and it needed four men to steady it while it hovered about 2 feet (0.6 meters) off the ground. Without a control system, it was not a practical helicopter.
On November 13, 1907, the French bicycle maker Paul Cornu became the first person to rise vertically in powered free flight. His helicopter used two counter-rotating rotors to cancel torque. Some control was achieved by placing auxiliary paddle-like wings below the rotors, and sticks held by men on the ground stabilized the machine. Although Cornu achieved a historic first, rising about one foot (0.6 meter) and hovering for about 20 seconds, the controls were inadequate, and the craft never developed into a practical helicopter.
In June 1909, Igor Sikorsky built his first helicopter, the S-1, in Kiev, Russia. The wooden craft weighed 450 pounds (204 kilograms) and had dual coaxial rotors. But the two blades were inefficient, and the most powerful engine that was available, a 25-horsepower (20 kilowatt) Anzani engine, could not lift its own weight. The next year, he built the S-2, which weighed only 400 pounds (181 kilograms) and had a three-blade rotor system. This model could rise, but the engine was too weak to carry a passenger. The machine also shook and vibrated violently because it needed a stiffer frame. Sikorsky turned to airplane development, returning to helicopters only in the 1930s after he emigrated to the United States.
The first vertical flight machine in the United States seems to have been developed by Emile Berliner and John Newton Williams. Berliner designed what may have been the first production rotary aircraft engine, the 36-horsepower (27-kilowatt) Adams-Farwell engine. In 1908, Williams constructed a coaxial machine for Berliner using two of these engines. It reportedly lifted both Williams and the machine—a weight of 610 pounds (277 kilograms)—but was probably steadied from the ground. Williams later built another craft using a 40-horsepower (30-kilowatt) Curtiss engine. It hovered at around three feet (0.9 meter), again steadied from the ground. Berliner also was the first to propose the auxiliary vertically mounted tail rotor.
Professor Zhukovskii and his students at Moscow University may also have constructed a primitive coaxial helicopter in 1910. Zhukovskii was well known for his theoretical contributions to aerodynamics and published several papers on the subject of rotating wings and helicopters.
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