- Armstrong Siddeley Mamba
- Armstrong Siddeley Viper
- Armstrong Siddeley Adder
- Armstrong Siddeley Mamba
- Armstrong Siddeley
- Adder (disambiguation)
- Saab 210
- GAF Jindivik
- List of aircraft engines
- Wolseley Motors
- Wolseley Aquarius
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The Armstrong Siddeley ASA.1 Adder was an early British turbojet engine developed by the Armstrong Siddeley company and first run in November 1948.
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
GAF Pika
Saab 210
Specifications
Data from Aircraft Engines of the World 1953.
General characteristics
Type: Turbojet
Length: 86.7 in (2,200 mm)
Diameter: 29 in (740 mm)
Dry weight: 580 lb (260 kg)
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: 1,050 lbf (4.7 kN) at 15,000 rpm for take-off; 870 lbf (3.9 kN) 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: 870 °C (1,600 °F; 1,140 K) 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
Armstrong Siddeley Mamba
Armstrong Siddeley Viper
Related lists
List of aircraft engines
References
Further reading
Turpin, Brian. "Turbine Test Beds". Aeroplane Monthly (February 1980).
External links
Minijets website
"Adder" a 1951 Flight article