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turbo-pump decomposition chamber. Once started, a bleed off the turbo-pump oxidiser outlet fed the turbo-pump decomposition chamber to maintain flow of fuel and oxidiser. Due to the single-shaft turbo-pump operating both fuel and oxidiser pumps, flow of fuel and oxidiser were automatically maintained at the correct ratio.
165:
The
Scorpion was a regeneratively-cooled HTP (High Test Peroxide/Kerosene) bi-propellant rocket engine. Fuel and oxidiser were pumped by a single shaft turbo-pump driven by super-heated steam, generated by catalysing HTP. Engine starting was achieved by an electric pump supplying HTP to the
189:
engine was simultaneously developed with the single-chamber
Scorpion, consisting of two Scorpion engines mounted together with each unit individually controllable, developing double the thrust. From 1956 Double Scorpion engines were fitted experimentally to two
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issued specifications for a wide variety of rocket engines, both liquid and solid-fuelled. Napier responded with the design of a liquid-fuelled rocket which used catalysed
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The
Kerosene fuel is ignited thermally by the super-heated steam from HTP, decomposed by passing over a catalyst in a decomposition chamber
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First run on 19 May 1956, the N.Sc.1 Scorpion was also fired in the air on the following day, mounted in the bomb-bay of an
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198:, fitted with a Double Scorpion, broke the world altitude record, exceeding 70,000 ft (21,000 m).
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The
Scorpion project was cancelled in February 1959, at a reported total cost of £1.25 million.
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118:, in the late 1950s. The Scorpion range were designed and flight tested as boosters to improve
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229:, emerging as a Double Scorpion with a third chamber mounted centrally under the other two.
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are a family of
British liquid-fuelled engines that were developed and manufactured by
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530:"SCORPION-CANBERRA'S ,70,000ft:A New Aeroplane Height Record on Final Rocket Power"
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170:, which is injected simultaneously into the combustion chamber.
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484:"United Kingdom Aerospace and Weapons Projects: Rocket Engines"
280:
A sectioned Napier Double
Scorpion engine is on display at the
284:. Another Napier Double Scorpion engine is on display at the
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Rocket engines using hot cycle hydrogen peroxide propellant
194:, to improve high altitude performance. On 28 August 1957
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The Double
Scorpion was also considered for use in the
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225:A triple-chamber version was also developed as the
114:at the Napier Flight Development Establishment,
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472:. London: Sampson Low, Marston & Co. Ltd.
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251:Initial development single-chamber engine.
856:Aviation rocket engines and rocket motors
49:Triple Scorpion engine on display at the
642:"Cancelled projects: the list up-dated"
470:Jane's all the World's Aircraft 1959–60
427:
575:
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31:
7:
205:interceptor (which gave rise to the
27:1950s British aircraft rocket engine
300:Double Scorpion on display at the
25:
292:Specifications (Double Scorpion)
40:
468:Bridgman, Leonard, ed. (1959).
362:Super-heated steam turbo-pump
1:
302:Royal Air Force Museum London
282:Royal Air Force Museum London
175:English Electric Canberra B.2
120:aircraft take-off performance
509:The English Electric Journal
906:Armstrong Siddeley Screamer
511:. June 1957. Archived from
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911:Armstrong Siddeley Snarler
454:(2579): 900. 27 June 1958.
51:Rolls-Royce Heritage Trust
213:was chosen for projected
48:
39:
34:
999:Rocket assisted take off
989:List of aircraft engines
594:"Napier Double Scorpion"
486:. Skomer. Archived from
416:List of aircraft engines
317:Liquid-propellant rocket
1025:Aircraft rocket engines
1020:Napier aircraft engines
994:List of rocket aircraft
891:Bristol Siddeley BS.605
539:: 379. 6 September 1957
502:"Napier Rocket Engines"
308:General characteristics
968:Type 4 Mark 1 Model 20
745:Turboprop / Turboshaft
650:: 262. 17 August 1967.
602:: 338. 30 August 1957.
304:
271:Triple-chamber engine.
266:Triple Scorpion NScT.1
261:Double-chamber engine.
256:Double Scorpion NScD.1
227:Napier Triple Scorpion
192:Canberra light bombers
126:Design and development
18:Napier Double Scorpion
299:
203:English Electric P.1A
896:de Havilland Spectre
616:Alan Vessey (1997).
537:Flight International
518:on 15 February 2006.
422:Notes and references
404:de Havilland Spectre
399:Bristol Siddeley 605
378:8,000 lbf (35.6 kN)
288:Museum Southampton.
901:de Havilland Sprite
490:on 5 February 2006.
931:Walter HWK 109-509
926:Dushkin D-1-A-1100
393:Comparable engines
349:Hydrogen peroxide
305:
276:Engines on display
152:High-Test Peroxide
150:), in the form of
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945:Hybrid propellant
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574:Missing or empty
325:33.7 in (856 mm)
140:hydrogen peroxide
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16:(Redirected from
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982:Related articles
961:Solid propellant
936:Toku-Ro.2 (KR10)
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561:. February 1958.
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337:216 lb (98 kg)
331:23 in (584 mm)
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221:Triple Scorpion
211:Aerojet General
187:Double Scorpion
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181:Double Scorpion
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104:Napier Scorpion
72:National origin
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752:Coupled Naiad
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627:0-7524-0766-X
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410:Related lists
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973:Jetex engine
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576:|title=
567:cite journal
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541:. Retrieved
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513:the original
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488:the original
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233:Cancellation
226:
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217:production.
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186:
184:
172:
164:
136:Air Ministry
132:World War II
129:
103:
101:
96:19 May 1956
29:
863:Liquid fuel
614:Compiled by
543:21 December
367:Performance
335:Dry weight:
1014:Categories
620:. Tempus.
439:"Scorpion"
382:Burn time:
354:Components
286:Solent Sky
106:series of
93:First run
347:Oxidiser:
343:Kerosene
329:Diameter:
207:Lightning
162:as fuel.
154:(HTP) as
35:Scorpion
815:Scorpion
711:Culverin
388:See also
241:Variants
160:Kerosene
156:oxidiser
876:XR-4K14
762:Gazelle
721:Javelin
323:Length:
319:engine
871:XR-4A3
808:Rocket
731:Rapier
716:Dagger
689:Napier
647:Flight
624:
599:Flight
447:Flight
442:(.pdf)
374:Thrust
360:Pumps:
209:) and
130:After
112:Napier
886:XLR99
881:XLR11
783:Nomad
767:Naiad
757:Eland
736:Sabre
533:(PDF)
516:(PDF)
505:(PDF)
341:Fuel:
314:Type:
196:WK163
116:Luton
61:Type
55:Derby
799:Oryx
726:Lion
622:ISBN
580:help
545:2017
185:The
158:and
134:the
102:The
706:Cub
1016::
644:.
596:.
571::
569:}}
565:{{
535:.
507:.
460:^
452:73
450:.
444:.
430:^
177:.
142:(H
122:.
53:,
849:e
842:t
835:v
681:e
674:t
667:v
630:.
582:)
578:(
547:.
376::
148:2
146:O
144:2
20:)
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