The Armstrong-Siddeley Adder was an early Britishturbojet engine developed by the Armstrong Siddeley company and first run in November1948. Turbojets are the simplest and oldest kind of general purpose jet engine. ... The Armstrong-Siddeley automobiles (and later aircraft engines) were an English marque manufactured from 1919 (after the company was formed in 1917 by a merger between two Coventry_based companies, Armstrong-Whitworth and Siddeley-Deasy) to 1960. ... Look up November in Wiktionary, the free dictionary. ... 1948 (MCMXLVIII) was a leap year starting on Thursday (the link is to a full 1948 calendar). ...
The Adder, a pure-jet derivative of the Armstrong Siddeley Mamba, was originally developed as an expendable engine to power the Jindivik 1 target drone. The engine was then developed into a longer-life engine before evolving into the more-powerful Armstrong Siddeley Viper. The Mamba was Armstrong-Siddeleys gas turbine turboprop engine design of around 1,500 hp (1,100 kW). ...
The Adder was flight tested in the tail of the Avro Lancaster IIISW342, the aircraft also having been previously modified and used for icing trials of the Mamba by Armstrong Siddeley's Flight Test Department at Bitteswell. The Avro Lancaster was a four-engine World War II bomber aircraft made initially by Avro for the Royal Air Force (RAF). ... Bitteswell is a village and civil parish in the Harborough district of Leicestershire in England. ...
Turbojets are the simplest and oldest kind of general purpose jet engine. ... Thrust is a reaction force described quantitatively by Newtons Second and Third Law. ... Power-to-weight ratio is a measure commonly used when comparing various vehicles (or engines), including automobiles, motorcycles and aircraft. ...
Reference
Turbine Test Beds by Brian Turpin - Part one - Aeroplane Monthly February 1980 issue
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