- Armstrong Siddeley Mamba
The Mamba was a British
turboprop engine produced byArmstrong Siddeley 's in the late 1940s and 1950s, producing around 1,500 effective horsepower (1,100 kW).The Mamba has was a compact engine cite web |url=http://www.rafmuseum.org.uk/cosford/collections/engines/engine_info.cfm?engine_id=6 |title=Aero Engine Information |accessdate=2008-06-06 |work=RAF Museum] with a 10-stage
axial compressor , 6combustion chamber s and a two-stage power turbine. The epicyclic reduction gearbox was incorporated in the propeller spinner. Engine starting was by cartridge. The internal deisgnation was A.S.M (Armstrong Siddeley Mamba). ASM.3 gave 1,475 ehp and the ASM.6 was rated at 1,770 ehp.A 500-hour test was undertaken in 1948. The Mamba was the first turboprop engine to power the Douglas DC-3 Dakota. In 1949, a Dakota
testbed was converted to take two Mambas.The Mamba was developed into the form of the Double Mamba, which was used on the
Fairey Gannet anti-submarine aircraft for theRoyal Navy . This was essentially two Mambas lying side-by-side and driving acontra-rotating propellers through a common gearbox. Aturbojet version of the Mamba was developed as theArmstrong Siddeley Adder , by removing the reduction gearbox.Variants and applications
*ASM.3
**Armstrong Whitworth Apollo
**Avro Athena
**Boulton Paul Balliol
**Breguet Vultur *ASM.6
**Short Seamew pecifications (ASM.1)
jetspecs
type=Turboprop
length=
diameter=
weight=
compressor=10 stage axial flow
combustion=6 combustion chambers
turbine=2 stage
fueltype=
oilsystem=
power=1,590 ehp (1,186 kW)
thrust=
compression=
aircon=
turbinetemp=
fuelcon=
specfuelcon=
power/weight=
thrust/weight=References
External links
* [http://www.enginehistory.org/coventry.htm Pictures at museum of Mamba and double mamba]
* [http://www.aoxj32.dsl.pipex.com/NewFiles/ASData.html Engine data]
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