Armstrong Siddeley Viper

Viper
Preserved Rolls-Royce Viper turbojet
Type Turbojet
Manufacturer Armstrong Siddeley
Rolls-Royce Limited
First run April 1951
Major applications BAC Jet Provost
HS Dominie
Aermacchi MB-326
Developed from Armstrong Siddeley Adder

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. It entered service in 1953 and remained in use with the Royal Air Force, powering its Dominie T1 navigation training aircraft until January 2011.