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Turbo Commander 690 : ウィキペディア英語版
Aero Commander 500 family


The Aero Commander 500 family is a series of light-twin piston-engined and turboprop aircraft originally built by the Aero Design and Engineering Company in the late 1940s, renamed the Aero Commander company in 1950, and a division of Rockwell International from 1965. The initial production version was the Aero Commander 520. Piston-engined versions manufactured after 1967 are known as the Shrike Commander.〔

==Design and development==

The idea for the Commander light business twin was conceived by Ted Smith, a project engineer at the Douglas Aircraft Company. Working part-time after hours throughout 1944, a group of A-20 engineers formed the Aero Design and Engineering Company to design and build the proposed aircraft with a layout similar to their A-20 bomber.〔 Originally, the new company was going to build three pre-production aircraft, but as the first aircraft was being built, they decided to build just one prototype.〔 The final configuration was completed in July 1946 and was designated the Model L3805.〔
Registered ''NX1946'', the prototype first flew on 23 April 1948.〔 The L3805 accommodated up to five people and was powered by two Lycoming O-435-A piston engines.,〔 it was an all-metal high-wing monoplane with retractable undercarriage using components from a Vultee BT-13 Valiant. The market segment planned for this aircraft to be sold to small feeder airliner firms and was originally designed to carry seven passengers, but instead found use in the private business aircraft and military market.〔("Feederliner Makes Debut." ) "Popular Science'', August 1948, p. 90, bottom of page. Note: First photos seems to indicate first model was to have fixed landing gear.〕 Walter Beech test flew the aircraft in 1949 and expressed interest in buying the project, but passed on to develop the Beechcraft Twin Bonanza. Fairchild Aircraft also evaluated the prototype at its Hagerstown, Maryland, headquarters.〔
The prototype flew successfully and the company leased, at no cost, a new 26,000 square-foot factory at Bethany near Oklahoma City to build a production version, certified on 30 June 1950. Nearly 10,000 hours of redesign work went into the model, including more powerful Lycoming GO-435-C2 engines, with a combined rating of 520 horsepower. The production model was named the Commander 520. The first Commander 520 was rolled out of the new factory in August 1951. Serial number 1 was used as a demonstrator, then sold in October 1952 to the Asahi Shimbun Press Company of Tokyo.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Aero Commander 500 family」の詳細全文を読む



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