Armstrong Siddeley Adder
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| Adder | |
|---|---|
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| Armstrong Siddeley Adder turbojet on display at the Rolls-Royce Heritage Trust, Derby | |
| Type | Turbojet |
| Manufacturer | Armstrong Siddeley |
| First run | November 1948 |
| Developed from | Armstrong Siddeley Mamba |
| Developed into | Armstrong Siddeley Viper |
The Armstrong Siddeley ASA.1 Adder was an early British turbojet engine developed by the Armstrong Siddeley company and first run in November 1948.[1]
Design and development
The Adder, a turbojet 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 ASA.1 Adder was flight tested in the rear-turret position of the Avro Lancaster III SW342, the aircraft also having been previously modified and used for icing trials of the Mamba by Armstrong Siddeley's Flight Test Department at Bitteswell.
Applications
Specifications
Data from Aircraft Engines of the World 1953.[2]
General characteristics
- Type: Turbojet
- Length: Template:Cvt
- Diameter: Template:Cvt
- Dry weight: Template:Cvt
Components
- Compressor: 10-stage axial-flow
- Combustors: six can combustion chambers
- Turbine: 2-stage axial
- Fuel type: Aviation kerosene
- Oil system: dry sump and total loss pressure spray
Performance
- Maximum thrust: Template:Cvt at 15,000 rpm for take-off; Template:Cvt max continuous at 14,250 rpm at sea level
- Overall pressure ratio: 5:1
- Air mass flow: 18.2 lb/s (8.2 kg/s)
- Turbine inlet temperature: Template:Cvt TIT at 15,000 rpm
- Specific fuel consumption: 1.02 lb/lbf/hr (103.98 kg/kN/hr)
- Thrust-to-weight ratio: 0.53
See also
Related development
Related lists
References
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Further reading
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External links
- Minijets website
- "Adder" a 1951 Flight article
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