[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/armstrong-siddeley-mamba-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki24\/armstrong-siddeley-mamba-wikipedia\/","headline":"Armstrong Siddeley Mamba – Wikipedia","name":"Armstrong Siddeley Mamba – Wikipedia","description":"From Wikipedia, the free encyclopedia 1940s British turboprop aircraft engine The Armstrong Siddeley Mamba was a British turboprop engine produced","datePublished":"2014-11-16","dateModified":"2014-11-16","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/1\/1e\/Douglas_C-47B_Mamba_Dakota_KJ839_A-S_Coventry_06.54_edited-2.jpg\/220px-Douglas_C-47B_Mamba_Dakota_KJ839_A-S_Coventry_06.54_edited-2.jpg","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/1\/1e\/Douglas_C-47B_Mamba_Dakota_KJ839_A-S_Coventry_06.54_edited-2.jpg\/220px-Douglas_C-47B_Mamba_Dakota_KJ839_A-S_Coventry_06.54_edited-2.jpg","height":"146","width":"220"},"url":"https:\/\/wiki.edu.vn\/en\/wiki24\/armstrong-siddeley-mamba-wikipedia\/","wordCount":2043,"articleBody":"From Wikipedia, the free encyclopedia1940s British turboprop aircraft engineThe Armstrong Siddeley Mamba was a British turboprop engine produced by Armstrong Siddeley in the late 1940s and 1950s, producing around 1,500 effective horsepower (1,100\u00a0kW).Armstrong Siddeley gas turbine engines were named after snakes.Table of ContentsDesign and development[edit]Variants and applications[edit]Engines on display[edit]Specifications (ASMa.6)[edit]General characteristicsComponentsPerformanceSee also[edit]References[edit]Bibliography[edit]External links[edit]Design and development[edit]The Mamba was a compact engine [1] with a 10-stage axial compressor, six combustion chambers and a two-stage power turbine. The epicyclic reduction gearbox was incorporated in the propeller spinner. Engine starting was by cartridge. The Ministry of Supply designation was ASMa (Armstrong Siddeley Mamba). The ASMa.3 gave 1,475 ehp and the ASMa.6 was rated at 1,770 ehp. A 500-hour test was undertaken in 1948[1] and the Mamba was the first turboprop engine to power the Douglas DC-3, when in 1949, a Dakota testbed was converted to take two Mambas.The Mamba was also developed into the form of the Double Mamba, which was used to power the Fairey Gannet anti-submarine aircraft for the Royal Navy. This was essentially two Mambas lying side-by-side and driving contra-rotating propellers separately through a common gearbox.A turbojet version of the Mamba was developed as the Armstrong Siddeley Adder, by removing the reduction gearbox.[2]Variants and applications[edit]  The Armstrong Siddeley Mamba-powered Douglas C-47B Dakota testbed in 1954 showing the slim outline of the MambasASMa.3 Mamba[3]Armstrong Whitworth ApolloAvro AthenaBoulton Paul BalliolBreguet VulturMiles M.69 Marathon IIDouglas C-47 DakotaShort SB.3ASMa.5 MambaDevelopment engine for Armstrong Siddeley ASMD.3 Double Mamba[3]ASMa.6 Mamba[3]Short SeamewASMa.7 MambaA version for civil applications[3]Swiss-Mamba SM-1 (aft turbofan variant)EFW N-20Mamba 112(ASMa.6)Engines on display[edit]An Armstrong Siddeley Mamba is on static display at the Midland Air Museum, Coventry Airport, Warwickshire, at the Royal Air Force Museum Cosford and at the East Midlands Aeropark.A Mamba is also on display at the Aviation Heritage Museum (Western Australia).[4]A Swiss-Mamba SM-1 is on display at the Flieger-Flab-Museum D\u00fcbendorf.A Mamba is also on display at the Hertha Ayrton STEM Centre, Sheffield Hallam University, UK.Specifications (ASMa.6)[edit]  Mamba and propeller from the Apollo airlinerData from Aircraft engines of the World 1957[5]General characteristicsType: TurbopropLength: 90.2\u00a0in (2,290\u00a0mm)Diameter: 33\u00a0in (840\u00a0mm)Frontal area: 5.9\u00a0sq\u00a0ft (0.55\u00a0m2)Dry weight: 850\u00a0lb (390\u00a0kg)ComponentsCompressor: 11 stage axial flowCombustors: Annular combustion chamber with 24 vapourising burnersTurbine: 3 stage axial flowFuel type: Aviation Kerosene \/ JP-4PerformanceMaximum power output: 1,650\u00a0shp (1,230\u00a0kW) plus  320\u00a0lbf (1.4\u00a0kN) thrust\u00a0; 1,770\u00a0shp (1,320\u00a0kW) (equivalent) at 15,000 rpmOverall pressure ratio: 6:1Air mass flow: 21.5\u00a0lb\/s (9.8\u00a0kg\/s) at 15,000 rpmSpecific fuel consumption: 0.69\u00a0lb\/(hp\u22c5h) (0.42\u00a0kg\/kWh) (equivalent shaft horsepower)Power-to-weight ratio: 2.08\u00a0hp\/lb (3.42\u00a0kW\/kg) (equivalent shaft horsepower)See also[edit]Related developmentRelated listsReferences[edit]^ a b “Aero Engine Information”. RAF Museum. Archived from the original on 16 November 2007. Retrieved 6 June 2008.^ Gunston 1989, p.20.^ a b c d Taylor, John W.R. FRHistS. ARAeS (1955). Jane’s All the World’s Aircraft 1955-56. London: Sampson, Low, Marston & Co Ltd.^ Studio, Cicada. “Armstrong Siddeley Mamba”. www.raafawa.org.au. Retrieved 16 March 2019.^ Wilkinson, Paul H. (1957). Aircraft engines of the World 1957 (15th\u00a0ed.). London: Sir Isaac Pitman & Sons Ltd. pp.\u00a0122\u2013123.Bibliography[edit]“Aero Engines 1954”, Flight, www.flightglobal.com, p.\u00a0446, 9 April 1954, retrieved 4 November 2008Gunston, Bill (1989). World Encyclopaedia of Aero Engines (2nd\u00a0ed.). Cambridge, England: Patrick Stephens Limited. ISBN\u00a0978-1-85260-163-8.External links[edit]  "},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/armstrong-siddeley-mamba-wikipedia\/#breadcrumbitem","name":"Armstrong Siddeley Mamba – Wikipedia"}}]}]