Summary
The Williams F107 (company designation WR19) is a small turbofan engine made by Williams International. The F107 was designed to propel cruise missiles. It has been used as the powerplant for the AGM-86 ALCM, and BGM-109 Tomahawk, as well as the experimental Kaman KSA-100 SAVER and Williams X-Jet flying platform.
| F107 / WR19 | |
|---|---|
| |
| An F107 engine on display at the San Diego Air & Space Museum | |
| Type | Turbofan |
| National origin | United States |
| Manufacturer | Williams International |
| First run | 1970s |
| Major applications | AGM-86 ALCM BGM-109 Tomahawk AGM-158B |
| Developed into | Williams F112 |
Applications edit
Specifications (WR19) edit
Data from Aircraft engines of the World 1970[1]
General characteristics
- Type: Turbofan
- Length: 24 in (610 mm)
- Diameter: 12 in (300 mm)
- Dry weight: 67 lb (30 kg)
Components
- Compressor: 2-stage fan, 2-stage axial IP compressor, 1-stage centrifugal HP compressor
- Combustors: Annular combustion chamber
- Turbine: 1-stage HP turbine, 2-stage LP turbine
- Fuel type: JP-4 / JP-5
- Oil system: Pressure system with return
Performance
- Maximum thrust: 430 lbf (1.9 kN) Maximum continuous power
- F107-WR-400 610 lbf (2.7 kN)
- F107-WR-402 700 lbf (3.1 kN)
- F107-WR-105/401 1,400 lbf (6.22 kN)
- F107-WR-400 610 lbf (2.7 kN)
- Overall pressure ratio: 13.8:1
- Bypass ratio: 1:1
- Specific fuel consumption: 0.683 lb/lbf/h (69.6 kg/kN/h)
- Thrust-to-weight ratio: 6.42
F122 edit
| Williams F122 | |
|---|---|
| Type | Turbofan |
| National origin | United States |
| Manufacturer | Williams International |
| Major applications | KEPD 350 |
| Number built | 699 (as of August 2014) |
| Developed from | Williams F107 |
| Variants | Williams F415 |
The Williams International F122 is a twin-shaft, axial-centrifugal-flow turbofan that is similar to the F107 in configuration but has a maximum thrust of 900 lbf (3.33 to 4.0 kN).
Design and development edit
The F122 is used to power the KEPD 350 air-launched cruise missile, and was the powerplant for the cancelled AGM-137 TSSAM air-launched cruise missile.[2] Although the AGM-137 was cancelled, the F122 was first used for the Taurus KEPD when it was flown aboard that missile in April 2002.
Applications edit
See also edit
References edit
Further reading edit
- Leyes, Richard A.; Fleming, William A. (1999). The history of North American small gas turbine aircraft engines Chapter 10. Washington D.C.: AIAA /Smithsonian Institution. ISBN 1-56347-332-1.
The initial version of this article was based on a public domain article from Greg Goebel's Vectorsite.
External links edit
- National Museum of the USAF F107 fact sheet
- F107-WR-400_Turbofan_PCS_-_October_1984