Pratt & Whitney F119
| F119 | |
|---|---|
| |
| F119 engine on test | |
| Type | Turbofan |
| Manufacturer | Pratt & Whitney |
| Major applications | F-22 Raptor |
| Developed into | Pratt & Whitney F135 |
The Pratt & Whitney F119 (company designation PW5000[1]) is an afterburning turbofan engine developed by Pratt & Whitney for the Lockheed Martin F-22 Raptor advanced tactical fighter.
The engine delivers thrust in the 35,000 lbf (160 kN) class, and is designed for supersonic flight without the use of afterburner (supercruise). Delivering almost 22% more thrust with 40% fewer parts than conventional, fourth-generation military aircraft engine models, the F119 allows sustained supercruise speeds of up to Mach 1.72.[2] The F119's nozzles incorporate thrust vectoring technology. These nozzles direct the engine thrust ±20° in the pitch axis to give the F-22 enhanced maneuverability.
The F119 derivative, the F135, produces 40,000 lbf (180 kN) of thrust[3] for the F-35 Lightning II.
Variants
- F119-PW-100
Applications
Specifications (F119)
General characteristics
- Type: twin-spool, augmented turbofan[4]
- Length: 16 ft 11 in (5.16 m)[5]
- Diameter: ~46 in (1.168 m)
- Dry weight: 3,900 lb (1770 kg)[6]
Components
- Compressor: Twin Spool/Counter Rotating/Axial Flow/Low Aspect Ratio[4] 3 stage low-pressure, 6 stage high-pressure compressor
- Combustors: Annular Combustor
- Turbine: Axial Flow/Counter-Rotating 2 single-stage turbines
Performance
- Maximum thrust: >35,000 lbf (156 kN) (with afterburner)[7]
- Thrust-to-weight ratio: 7.95[6]
See also
Related development
Comparable engines
Related lists
References
- ^ Designation-systems.net's Designations Of U.S. Military Aero Engines page
- ^ F-22 Flight Test Data. accessed August 8, 2007.
- ^ F-35 Joint Strike Fighter Media Kit Statistics (ZIP, 98.2 KB)
- ^ a b Pratt & Whitney F119 Page[dead link].
- ^ Factsheets : Pratt & Whitney YF119-PW-100L Augmented Turbofan
- ^ a b Military Jet Engine Acquisition, RAND, 2002.
- ^ F-22 Raptor fact sheet. USAF, March 2009.
External links
