Armstrong Siddeley Screamer
{{short description|1950s British aircraft rocket engine}}
{{Use dmy dates|date=February 2018}}
{{Use British English|date=February 2018}}
| {{Infobox aircraft begin
|name = Screamer |image = File:AS Screamer RRHT.jpg |caption = Screamer engine on display at the Rolls-Royce Heritage Trust, Derby }}{{Infobox aircraft engine |type=Rocket engine |manufacturer=Armstrong Siddeley |national origin=United Kingdom |first run=19 May 1954 |major applications= |number built = |program cost = |unit cost = |developed from = |variants with their own articles = |developed into = }} |
The Armstrong Siddeley Screamer was a British rocket engine intended to power the Avro 720 manned interceptor aircraft (Avro's competitor to the Saunders-Roe SR.53 for a rocket-powered interceptor). Thrust was variable, up to a maximum of {{convert|8000|lbf|kN|abbr=on}}.{{cite journal
|journal=Flight
|title=Armstrong Siddeley Screamer
|url=http://www.flightglobal.com/pdfarchive/view/1956/1956%20-%201014.html
|archive-url=https://web.archive.org/web/20121023094116/http://www.flightglobal.com/pdfarchive/view/1956/1956%20-%201014.html
|archive-date=23 October 2012
|url-status=dead
|type = PDF
|date=27 July 1956
|pages=160–164
|title=Rockets for Aircraft Propulsion
|first=S., RAeS
|last=Allen
|journal=The Aeroplane
|date=7 Dec 1951
|journal=Flight
|title=ROCKET-MOTOR DESIGN: A Paper by the Chief Engineer of Armstrong Siddeley Motors (Rocket Division)
|first=S., RAeS
|last=Allen
|url=http://www.flightglobal.com/pdfarchive/view/1956/1956%20-%201483.html?search=screamer
|archive-url=https://web.archive.org/web/20160306160515/https://www.flightglobal.com/pdfarchive/view/1956/1956%20-%201483.html?search=screamer
|archive-date=6 March 2016
|url-status=dead
|type = PDF
|date=19 October 1956
|accessdate=27 November 2014
|pages=637–638
}}
Design and development
Work on the Screamer started in 1946, with the first static test at Armstrong Siddeley's rocket plant at Ansty in March 1954.{{cite journal
|journal=Flight
|title=Scorpion and Screamer
|url=http://www.flightglobal.com/pdfarchive/view/1956/1956%20-%200930.html
|archive-url=https://web.archive.org/web/20180504091602/https://www.flightglobal.com/pdfarchive/view/1956/1956%20-%200930.html
|archive-date=4 May 2018
|url-status=dead
|format = PDF
|date=13 July 1956
|pages=76
|ref=Flight, 13 July 1956, Scorpion and Screamer
}} The programme was cancelled, as was the Avro 720, before flight testing.{{cite book
|title=A Vertical Empire: The History of the UK Rocket and Space Programme, 1950-1971
|author=C.N. Hill
|year=2001
|publisher=Imperial College Press
|isbn=1-86094-268-7
|page=28
|url=https://books.google.com/books?id=AzoCJfTmRDsC&dq=Armstrong+Siddeley+Screamer&pg=PA28
}}
In 1951, a Gloster Meteor F.8 was experimentally fitted with a Screamer mounted below the fuselage.{{cite web
|author=Keith Meggs
|title=A Man and his Machines
|url=http://www.ctie.monash.edu.au/hargrave/MEGGS_meteor.html
|access-date=18 April 2008
|archive-date=29 March 2008
|archive-url=https://web.archive.org/web/20080329140348/http://www.ctie.monash.edu.au/hargrave/MEGGS_meteor.html
|url-status=dead
}}
The Screamer project was cancelled in March 1956, at a reported total cost of £650,000.{{cite journal
|journal=Flight
|title=Cancelled projects: the list up-dated
|url=http://www.flightglobal.com/pdfarchive/view/1967/1967%20-%201672.html
|archive-url=https://web.archive.org/web/20180612162641/https://www.flightglobal.com/pdfarchive/view/1967/1967%20-%201672.html
|archive-date=12 June 2018
|url-status=dead
|format = PDF
|date=17 August 1967
|pages=262
|ref=Flight, Flight, 17 August 1967, Cancelled projects list
}}
Engines on display
- A preserved Screamer is part of the engine collection on display at the Rolls-Royce Heritage Trust in Derby.
Specifications
{{rocketspecs
|ref=
|type=Variable thrust liquid-propellant rocket engine
|length= 78.5 in (199.4 cm)
|diameter= 27 in (68.6)
|weight= 470 lb (213.2 kg)
|fueltype=Kerosene
|oxidiser= Liquid oxygen (LOX) and filtered water (coolant)
|capacity=
|pumps=Three pumps
|thrust=9,500 lb (42 kN) at 40,000 ft (12,200 metres) (estimated)
|thrust/weight=
|burn time=
|fuelcon=
|specfuelcon=
}}
See also
{{aircontent
|see also=
|related=
|lists=
|similar engines=
}}
References
{{reflist}}
External links
{{Commons category}}
- {{cite web
|title=Sectional drawing of the Screamer
|url=http://www.flightglobal.com/airspace/photos/aeroenginesjet/images/5577/original.aspx
|format = image
|publisher= Flight International
}}
{{Armstrong Siddeley aeroengines}}
{{Aviation rocket engines}}
{{DEFAULTSORT:Screamer}}
Category:Aircraft rocket engines