The Mamba was Armstrong-Siddeley's gas turbine turboprop engine design of around 1,500 hp (1,100 kW). It was used for the Short Seamew. The Armstrong-Siddeley automobiles (and later aircraft engines) were an English marque manufactured from 1919 (after the company was formed in 1917 by a merger between two Coventry_based companies, Armstrong-Whitworth and Siddeley-Deasy) to 1960. ... This machine has a single-stage radial compressor and turbine, a recuperator, and foil bearings. ... A diagram showing how a turboprop works. ... The Short SB.6 Seamew was a rather curious looking aircraft ostensibly to the same specification as the Fairey Gannet. ...

The Mamba was developed into the form of the Armstrong-Siddeley Double Mamba on the Fairey Gannet anti-submarine aircraft developed for the Royal Air Force. The Double Mamba was Armstrong-Siddleys a gas turbine turboprop engine design of around 3-4,000 hp (2. ... The Fairey Gannet is a carrier-borne Anti-submarine warfare and Airborne Early Warning aircraft of the immediate post World War II-era developed for the Royal Navy Fleet Air Arm. ... Anti-submarine warfare is a term referring to warfare directed against submarines. ... The Royal Air Force (often abbreviated to RAF) is the air force branch of the UK Armed Forces. ...

Engine starting was by cartridge.

The Mamba has the distinction of being the first turboprop engine to power the Douglas Dakota. In 1949, a Dakota testbed aircraft was converted by Armstrong-Siddeley to take two Mambas. (This aircraft was later re-converted to take the original engines.) Douglas can be: A male given name A Celtic mythological figure, see Douglas (mythology) An airplane manufacturer, see Douglas Aircraft Company, later McDonnell-Douglas, now part of Boeing A river in England, see River Douglas A shire in Queensland, see Douglas, Australia Capital of the Isle of Man, see Douglas... Dakota may refer to: A group of Amerindian tribes (see Lakota or Sioux), or lands named after them: The related tribes in Minnesota known as Dakota Oyate (Nation), or Santees, meaning allies, including the Prairie Island (Mdewakanton and Wahpekute) Indian Community, the Shakopee Mdewakanton Sioux (Dakota) Community, the Lower Sioux... 1949 is a common year starting on Saturday. ... A testbed is a platform for experimentation for large development projects. ...

The Mamba was produced in various series. The numbering followed the convention:
AS = Armstrong-Siddeley
M = Mamba
num = model

Specifications

For ASM.1

Cycle: (unknown)

Compression ratio: (unknown)

Power: 1,590 hp (1,186 kW)

Weight: (unknown)