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It is a common emergency procedure taught to helicopter pilots as part of their training. In normal powered helicopter flight, air is drawn into the main rotor system from above and forced downward, but during autorotation, air moves into the rotor system from below as the helicopter descends.
The R-4 was the world's first large-scale mass-produced helicopter and the first helicopter used by the United States Army Air Forces, [1] the United States Navy, the United States Coast Guard and the United Kingdom's Royal Air Force and Royal Navy. In U.S. Navy and U.S. Coast Guard service, the helicopter was known as the Sikorsky HNS-1.
Pages in category "Helicopter components" The following 22 pages are in this category, out of 22 total. This list may not reflect recent changes. A. Apache Arrowhead; B.
The 47 became the first helicopter certified for civilian use on 8 March 1946. [1] [2] The first civilian delivery was made on 31 December 1946 to Helicopter Air Transport. [3] More than 5,600 Bell 47s were produced, including those under license by Agusta in Italy, Kawasaki Heavy Industries in Japan, and Westland Aircraft in the United Kingdom.
The Sikorsky H-5 (initially designated R-5 [a] and also known as S-48, S-51 and by company designation VS-327 [1]) is a helicopter built by Sikorsky Aircraft Corporation.. It was used by the United States Air Force, and its predecessor, the United States Army Air Forces, as well as the United States Navy and United States Coast Guard (with the designations HO2S and HO3S).
The first Bell AH-1Z set to receive upgrades to be provided by Bell Textron Inc., a Textron Inc. company, under a contract with the U.S. Marine Corps, has arrived at Bell’s Amarillo Assembly ...
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They obtained a patent for the device (French Patent No. 398,545, June 7, 1909). [1] Although its principle is also found in earlier patents by other screw inventors. The first successful implementation of the swashplate was made by de la Cierva in 1922 in his autogyro. [2] In 1907 before the flight test of Cornu's helicopter.