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Terrafugia Transition : ウィキペディア英語版
Terrafugia Transition
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The Terrafugia Transition is a light sport, roadable airplane under development by Terrafugia since 2006.〔http://uk.cars.yahoo.com/30062010/36/flying-car-closer-reality-0.html〕
The Rotax 912ULS〔TERRAFUGIA presentation of Transition aircraft "(The Transition )", 5 march 2012〕 piston engine powered, carbon-fiber vehicle is planned to have a flight range of using either automotive premium grade unleaded gasoline or 100LL avgas and a cruising flight speed of . Equipment includes a Dynon Skyview glass panel avionics system, an airframe parachute, and an optional autopilot.
On the road, it can drive up to with normal traffic. The Transition Production Prototype's folded dimensions of high, wide and long are designed to fit within a standard household garage. When operated as a car, the engine power take-off near the propeller engages a variable-diameter pulley CVT automatic transmission to send power to the trailing-suspension mounted rear wheels via half-shafts powering belt drives.〔()〕 In flight, the engine drives a pusher propeller. The Transition has folding wings, pusher propeller and twin tail.
==Design and development==
The experimental Transition Proof of Concept's first flight in March 2009 was successful and took place at Plattsburgh International Airport in upstate New York using U.S. Federal Aviation Administration (FAA) tail number N302TF. First customer delivery, as of March 2009, was originally planned to take approximately 18 months and occur in 2011.〔
On July 1, 2010 it was announced that the Terrafugia Transition had been granted an exemption from the FAA concerning its Maximum Takeoff Weight (MTOW) allowing the Transition to be certified with a take-off weight up to ; the limit matches the MTOW for amphibious light-sport aircraft. The extra granted by the exemption provides more weight allowance for the mandatory road safety features such as airbags and bumpers.〔
The proposed design of the production version was made public at AirVenture Oshkosh on July 26, 2010. Aerodynamic changes revealed included a new, optimized airfoil, Hoerner wingtips, and removal of the canard after it was found to have an adverse aerodynamic interaction with the front wheel suspension struts; furthermore, the multipurpose passenger vehicle classification from the NHTSA removed the requirement for a full width bumper that had inspired the original canard design.〔(Fast Lane to Sky High, Ansys Fluid flow simulation software co-pilots design of production prototype roadable aircraft by Gregor Cadman, Engineer, Terrafugia, Woburn, MA, USA )
On November 16, 2010 the U.S. National Highway Traffic Safety Administration (NHTSA) published Terrafugia's petition for a temporary, three-year hardship exemption from four FMVSS standards in the Transition. Terrafugia requested to use lighter weight motorcycle tires instead of RV tires, polycarbonate for the windshield and side windows, basic airbags instead of advanced, dual stage airbags and to not include an electronic stability control system.〔
〕〔

The NHTSA granted all of the requested exemptions on June 29, 2011, but limited the stability control and airbag exemptions to one year.〔Page, Lewis, "(Terrafugia flying car gets road-safety exemptions )", ''The Register'', 4 July 2011; retrieved 11 July 2011.〕
In June 2011, a delay was announced and Terrafugia's CEO estimated that about another 18 months would be required before first customer delivery in "late 2012". December 2011 saw the base price increased to US$279,000.
After undergoing drive tests and high-speed taxi tests, the production prototype completed its first flight on March 23, 2012 at the same airport in Plattsburgh, New York that was used for the Proof of Concept's flight testing.〔
〕〔(【引用サイトリンク】url=http://www.avweb.com/avwebflash/news/FirstFlightForTerrafugiaPrototype_206456-1.html )〕 The production prototype then made its auto show debut at the 2012 New York International Auto Show in April 2012.〔

In June 2012, Terrafugia announced that the Transition had completed the first of six phases of flight testing.〔(【引用サイトリンク】url=http://www.terrafugia.com/newsreleases.html )〕 By July, the second phase of testing was underway, expanding the performance envelope in the sky and continuing drive testing on the ground.〔(【引用サイトリンク】url=http://www.terrafugia.com/pdf/TerrafugiaPressRelease2012-0716.pdf )
In January 2013, development continued and the company announced that it might be necessary to construct a third, completely new prototype, due to the large number of modifications required. The modifications to date are said to appear to have improved the previous handling characteristics.
By March 2014, the design of the third, updated prototype had progressed to finalization of the major structural members and a statement to investors said that it would be used in final compliance testing for certification before the first customer delivery which was then estimated to take at least another 18 months and occur "in 2015".
By April 2014, 12 two-person test flights had taken place; this was the first time that anyone other than Terrafugia's chief test pilot had flown the Transition. , first customer delivery was hoped for in about 18 months "in the second quarter of 2016."
In December 2014 the company asked the FAA to allow the Transition to be operated at a gross weight of instead of the light-sport aircraft maximum weight of and have a stall speed of instead of the category maximum of . The company indicated that the increases were required to allow inclusion of structures to meet FMVSS ground operation safety regulations. The company had previously been granted an increase in gross weight of and another LSA aircraft, the ICON A5, was granted a exemption to meet FAA spin resistance requirements; this new application would increase the Transition's allowed weight by a total of or 36%. During consultations the request for the weight increase was supported by the General Aviation Manufacturers Association, the Experimental Aircraft Association, the Aircraft Owners and Pilots Association and the Light Aircraft Manufacturers Association. Only a few individuals expressed opposition to the request.
In April 2015 the company announced that parts were being built for the third version of the aircraft, and that current planning estimated the first customer delivery after roughly two years.

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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