- Source: Williams F121
The Williams F121 (company designation WR36-1)
is a small turbofan engine designed for use in the AGM-136 Tacit Rainbow anti-radiation cruise missile.
Development and design
The F121 engine had a rare set of design parameters as it is designed to be used only once. As a cruise missile engine, it was designed to have a long shelf life (be able to sit around unused for long periods of time) and then operate when needed for several hours. It was designed to power the AGM-136 Tacit Rainbow, which was to be a stand-off anti radiation missile. Its first flight was on July 30, 1984. The AGM-136 program was canceled several years later.
Another unique feature of the engine is that it was started with an explosive cartridge because it couldn't start while still mated to its aircraft.
In the late 2000s, the engine was being used by the Naval Air Warfare Center at Naval Air Weapons Station China Lake to test fuel performance and additives.
Specifications
Data from
General characteristics
Type: Single Spool Turbofan
Length: 40 in (1.01 m)
Diameter: 8.5 in (0.22 m)
Dry weight: 49 lb (22.22 kg)
Components
Compressor: 1 stage axial fan, 6-stage axial compressor
Combustors: Turbomeca Piméné-type
Turbine: 2-stage axial
Performance
Maximum thrust: 70 lbf (0.31 kN)
Bypass ratio: 1.7:1
Air mass flow: 5 lb (2,268.0 g) per second (approx)
Thrust-to-weight ratio: 1.43
See also
Related lists
List of aircraft engines
References
Leyes II, Richard A.; William A. Fleming (1999). "7". The History of North American Small Gas Turbine Aircraft Engines. Washington, DC: Smithsonian Institution. ISBN 1-56347-332-1.
Kata Kunci Pencarian:
- Turbokipas
- Williams F121
- Williams International
- AGM-136 Tacit Rainbow
- List of aircraft engines
- Bond Fire
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