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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).
Aeronautics is the science or art involved with the study, design, and manufacturing of air flight-capable machines, and the techniques of operating aircraft and rockets within the atmosphere. While the term originally referred solely to operating the aircraft, it has since been expanded to include technology, business, and other aspects ...
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.
By October 2018, the in-service and stored helicopter fleet of 38,570 with civil or government operators was led Robinson Helicopter with 24.7% followed by Airbus Helicopters with 24.4%, then Bell with 20.5 and Leonardo with 8.4%, Russian Helicopters with 7.7%, Sikorsky Aircraft with 7.2%, MD Helicopters with 3.4% and other with 2.2%.
The Eurocopter (now Airbus Helicopters) EC120 Colibri ("hummingbird") is a five-seat, single-engine, light utility helicopter.Jointly designed and developed by Eurocopter, China National Aero-Technology Import & Export Corporation (), Harbin Aviation Industries (Group) Ltd (HAIG) and Singapore Technologies Aerospace Ltd (STAero) at Eurocopter France's Marignane facility, the EC120B was ...
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The illustrated encyclopedia of helicopters. New York: Bonanza Books. ISBN 0-517-43935-2. Best, Martin S. (September 2014). "A History of the Fairchild Hiller FH-1100 Helicopter: Part 2: Development and Operation of the FH-1100". Air-Britain Archive. pp. 107– 122. ISSN 0262-4923. Donald, David (1998). The complete encyclopedia of world ...
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