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Note: This is a sub-section of Armstrong Siddeley Motors: Aero Engines
A turboprop version of the Armstrong Siddeley Motors: ASX referred to as ASP. The ASP conversion included a second turbine stage to drive the propeller through a gearbox, producing 3,600 shp, as well as 1,100 lbf (4.9 kN) of leftover jet thrust.
As the Armstrong Siddeley Python, this engine was used in the Westland: Wyvern.