| 翻訳と辞書 |
| Antonov An-8 ： ウィキペディア英語版 |
Antonov An-8
The Antonov An-8 (NATO reporting name: Camp) is a Soviet-designed twin-turboprop-engine high-wing light military transport aircraft.〔
==Development==
In December 1951 OKB-153 initiated the design of a twin-engined assault transport aircraft, designated DT-5/8 (''Desahntno-Trahnsportnyy ()'' – assault transport aircraft), to be powered by two Kuznetsov TV-2 turboprop engines, and fitted with a large rear cargo door to allow vehicles to be driven straight into the hold.〔 On 11 December 1953 the Soviet Council of Ministers issued directive No.2922-1251 to the Antonov OKB, requiring them to build a twin-turboprop transport aircraft derived from the DT-5/8. Bearing the in-house designation of ''Izdeliye P'' the resulting aircraft followed state of the art practice with a high wing carrying two propeller engines sat atop a rectangular section fuselage, tricycle undercarriage, with main gear units housed in pods either side of the fuselage, an upswept rear fuselage providing clearance of the tail unit for loading and unloading. After State acceptance trials production was not recommended due to poor spinning characteristics, directional stability and control issues, nosewheel shimmy, poor controllability when landing in crosswinds above 6 m/s (12 kt) and, last but not least, phugoid oscillations in all-three axes which were difficult to control and made piloting the prototype very tiring. As well as the aero-dynamic faults the TV-2 engines proved difficult to start with unstable gas dynamics at altitudes above 6,000 m (19,700 ft).〔
The Antonov OKB set about rectifying the faults with increased area vertical and horizontal tail surfaces, anti spin strakes on the upper rear fuselage sides, deleting the wing LE slats, local structural reinforcements and replacing the TV-2 engines with Ivchenko AI-20D turboprop engines, which had the added benefit of reducing the empty weight by 3 tonnes (6,600 lb). The new design required the use of new production techniques, like: stamping and forging of large high strength parts, extrusion of long sections, chemical milling of large skin panels and other new techniques.〔
Given the service designation An-8, the new transport was built in the GAZ-34 factory in Tashkent, from 1957 to 1961, as a larger-capacity replacement for the earlier Lisunov Li-2 (DC-3), with a large unpressurized hold, a manned tail gun position, chin radome for navigation/mapping radar and a glazed nose for the navigator.〔Simpson, Rod. "Airlife's World Aircraft". Airlife Publishing Ltd. London. 2001. ISBN 1-84037-115-3〕
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「Antonov An-8」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|