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Grumman G-21 Goose
The Grumman G-21 Goose is an amphibious aircraft that was designed by Grumman to serve as an eight-seat "commuter" aircraft for businessmen in the Long Island area. The Goose was Grumman’s first monoplane to fly, its first twin-engined aircraft, and its first aircraft to enter commercial airline service. During World War II, the Goose became an effective transport for the US military (including the United States Coast Guard), as well as serving with many other air forces. During hostilities, the Goose took on an increasing number of combat and training roles. The adaptable transport continued in postwar use.
==Design and development==
In 1936, a group of wealthy residents of Long Island, including E. Roland Harriman, approached Grumman and commissioned an aircraft that they could use to fly to New York City.〔("Goose." ) ''Antilles Seaplanes history page''. Retrieved: August 30, 2008.〕 In response the Grumman Model G-21 was designed as a light amphibian transport. Grumman’s typically rugged engineering produced a high-wing monoplane of almost all-metal construction—the trailing half of the main wing and all of the flight control surfaces except for the flaps were fabric-covered. It was powered by two Pratt & Whitney R-985 Wasp Junior nine-cylinder, air-cooled, radial engines mounted on the leading edges of the wings. The deep fuselage served also as a hull and was equipped with hand-cranked retractable landing gear. First flight of the prototype took place on May 29, 1937.〔("Grumman Goose." ) ''Aerofiles.com Grumman page''. Retrieved: August 30, 2008.〕
The fuselage also proved versatile as it provided generous interior space that allowed fitting for either a transport or luxury airliner role. Having an amphibious configuration also allowed the G-21 to go just about anywhere, and plans were made to market it as an amphibian airliner.〔Truelson 1976〕
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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