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Pfitzner Flyer
The Pfitzner Flyer was an innovative monoplane designed in 1909 by Alexander Pfitzner and built by the Curtiss company at Hammondsport, NY, where Pfitzner was employed at the time.
The Flyer was the first monoplane designed, built and flown in the United States.〔 It incorporated several novel features, the most innovative of which was the method of achieving lateral control by means of reciprocating lateral (telescopic) wing extensions, which the pilot controlled via a steering wheel. Also unusual for a monoplane was the use of a pusher configuration, the engine also being mounted behind the pilot.〔
The aircraft was not a success, and a disappointed Pfitzner is thought to have committed suicide on 12 July 1910.〔''Flight'' Magazine II (30), p. 584.〕〔Villard (2002), p.216.〕
==Background==
Since their success with the first recorded powered flight, the Wright Brothers had patented many of their methods and had sought to enforce their patents through the courts.〔Ashby (2002), p.5.〕 Most if not all other manufacturers were keen to develop alternative techniques; Pfitzner avoided the Wrights' method of warping the wings to achieve a lift differential between port and starboard wings by using wing extensions (or 'compensators'), described below. In his book “Monoplanes and Biplanes: Their Design, Construction and Operation” (1911), Grover Loening wrote “This aeroplane is a distinct departure from all other monoplanes in the placing of the motor, aviator, and rudders, and in the comparatively simple and efficient method of transverse control by sliding surfaces, applied here for the first time.”.〔Loening (1911), p.134.〕 The issue of patent protection was sufficiently in the public eye for ''The New York Times'', in its issue of 16 January 1910, to headline Pfitzner’s design as an “Aeroplane Without Patent Drawbacks".〔 The same article refers to the “Wright suits” and their attempts to “build up their patent fences”; Pfitzner is quoted there as saying that “any one who wants to do so is welcome to use () panel invention without cost or fear of injunction”.〔''New York Times'' ((NYT 16 Jan. 1910 ))〕
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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