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Kaman HH-43 Huskie
The Kaman HH-43 Huskie was a helicopter with intermeshing rotors used by the United States Air Force, the United States Navy and the United States Marine Corps from the 1950s until the 1970s. It was primarily used for aircraft firefighting and rescue in the close vicinity of air bases, but was later utilized as a short range overland search and rescue aircraft during the Vietnam War. Under the U.S. Navy's pre-1962 aircraft designation system, U.S. Navy and U.S. Marine Corps versions were originally designated as the HTK, HOK or HUK, contingent upon their use as training, observation or utility aircraft, respectively.
==Design and development==
In 1947 Anton Flettner, a former German teacher and inventor, was brought to New York in the United States as part of Operation Paperclip. He was the developer of Germany's Flettner Fl 282 "Kolibri" (Hummingbird), a helicopter employing the "synchropter" principle of intermeshing rotors, a unique design principle that dispenses with the need for a tail rotor. Flettner settled in the United States and became the chief designer of the Kaman company, where he started to design new helicopters, using the synchropter principle.
The Huskie had an unusual intermeshing contra-rotating twin-rotor arrangement with control effected by servo-flaps. The first prototype flew in 1947 and was adopted by the U.S. Navy with a piston-engine. In 1954, in an experiment by Kaman and the U.S. Navy, one HTK-1 was modified and flew with its piston engine replaced by two turbine engines, becoming the world's first twin-turbine helicopter.〔("Twin Turborotor Helicopter." ) ''Popular Mechanics'', August 1954, p. 139.〕 Later the Air Force adopted a version with one turboshaft engine: HH-43B and F versions.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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