The Armstrong Siddeley Viper is a British turbojet engine developed and produced by Armstrong Siddeley and then by its successor companies Bristol Siddeley...

Armstrong Siddeley was a British engineering group that operated during the first half of the 20th century. It was formed in 1919 and is best known for...

into a longer-life engine before evolving into the more-powerful Armstrong Siddeley Viper. The ASA.1 Adder was flight tested in the rear-turret position...

nicknamed "Viper" HMLA-169, a USMC helicopter squadron nicknamed "Vipers" Bell AH-1Z Viper, a twin-engine attack helicopter Armstrong Siddeley Viper, a turbojet...

was formed in 1959 by a merger of Bristol Aero-Engines Limited and Armstrong Siddeley Motors Limited. In 1961 the company was expanded by the purchase of...

enough power to keep up with the jet bomber. Like the similar Armstrong Siddeley Viper being built in the UK, the engine on a Quail drone had no need...

40 of the developed Jet Provost T3, featuring a more powerful Armstrong Siddeley Viper jet engine, ejector seats, a redesign of the airframe, and a shortened...

proof-of-concept demonstrator for the Gnat was powered by the less powerful Armstrong Siddeley Viper 101 with 1,640 lbf (7.3 kN) thrust. The demonstrator was designated...

prototype conducted its maiden flight, powered by an imported British Armstrong Siddeley Viper turbojet engine. During 1963, deliveries of the first production...

demonstrator for the Gnat was instead powered by the less powerful Armstrong Siddeley Viper 101 turbojet engine, capable of generating 1,640 lbf (7.3 kN /...