Williams F107

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
F107 / WR19
Williams Research F107.jpg
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
Developed into Williams F112

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 Williams X-Jet flying platform.


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)


  • 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


  • 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)


Williams F122
Type Turbofan
National origin United States
Manufacturer Williams International
Major applications KEPD 350
Number built 699 (as of August 2014)[2]
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.[3] 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.[2]


See also[edit]


  1. ^ Wilkinson, Paul H. (1970). Aircraft engines of the World 1970 (21st ed.). Washington D.C.: Paul H. Wilkinson. p. 120.
  2. ^ a b "Williams International F107/F122/F415" (PDF). www.forecastinternational.com. Retrieved 2020-04-03.
  3. ^ "Designations Of U.S. Military Aero Engines". www.designation-systems.net.
  4. ^ "Northrop AGM/MGM-137 TSSAM". www.designation-systems.net.

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]