Williams F107
Turbofan engine for cruise missiles
From Wikipedia, the free encyclopedia
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 | |
| Developed into | Williams F112 |
Applications
Specifications (WR19)
Data from Aircraft engines of the World 1970[1]
General characteristics
- Type:
- 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 / JP-10
- 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
| 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
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.
