Armstrong Siddeley Viper
Engine
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The Armstrong Siddeley Viper is a British turbojet engine developed and produced by Armstrong Siddeley and then by its successor companies Bristol Siddeley and Rolls-Royce Limited. Wikipedia
First run: April 1951
Major applications: BAC Jet Provost; HS Dominie; Aermacchi MB-326
Manufacturer: Armstrong Siddeley; Rolls-Royce Limited