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Armstrong Siddeley Snarler : ウィキペディア英語版
Armstrong Siddeley Snarler

The Armstrong Siddeley ASSn. Snarler was a small rocket engine used for mixed-power experiments with an early turbojet engine and was the first British liquid-fuelled rocket engine to fly〔 (includes external line drawing)〕 Unlike other British rocket engine projects that used hydrogen peroxide as an oxidiser, Armstrong Siddeley's used liquid oxygen. The rocket engine is described as having a dry weight of thrust of and a specific fuel consumption of 20 (lb/h)/lbf thrust.〔 Work began in 1947 and the final configuration was first tested on 29 March 1950.〔
The prototype of the Hawker P.1040 Sea Hawk, ''VP 401'', had a Snarler rocket of 2,000 lbf thrust added in its tail. The Rolls-Royce Nene turbojet, of 5,200 lbf thrust, had a split tailpipe which exhausted either side of the fuselage. The combination was termed the Hawker P.1072.〔 (P.1072 being fuelled)〕 This gave approximately〔Although the Nene's thrust, as for any turbojet, fell with increasing altitude the Snarler's remained constant.〕 50% greater thrust, although with twenty times the fuel consumption.〔 It was first used in flight on 20 November 1950, by Hawker's test pilot Trevor "Wimpy" Wade.〔 Half a dozen flights were made using the rocket motor before a minor explosion damaged the aircraft. Although methanol was used in the P.1072, jet fuel could be used for the Snarler. It was decided that reheat was a more practical proposition for boosting jet thrust than rockets.
An unusual feature of the engine was that the turbopump was externally driven, by a drive from the gearbox of the P.1072's turbojet engine.〔 ''(not publicly known at the time of Flight, 1954)''〕 This feature continued into the first versions of the subsequent Screamer engine, but was later replaced with a turbine-driven turbopump.
==Variants==
;ASSn.1 Snarler:The prototype and test engines, (given the Ministry of Supply designation ASSn.).

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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