Pratt & Whitney PW4000
The Pratt & Whitney PW4000 is a family of high-bypass turbofan aircraft engines with certified thrust ranging from 52,000 to 99,040 lbf (230 to 441 kN). Built as the successor to the JT9D series engines, it has found much wider application than its predecessor.
|National origin||United States|
|Manufacturer||Pratt & Whitney|
|First run||April 1984|
|Major applications||Airbus A300|
McDonnell Douglas MD-11
|Developed from||Pratt & Whitney JT9D|
|Developed into||Engine Alliance GP7000|
Design and developmentEdit
The PW4000 is divided into three distinct families based on fan diameter.
The first family is the 94 inch (2.4 m) diameter fan with certified thrust ranging from 52,000 to 62,000 lbf (230 to 275 kN). It powers the Airbus A310-300, A300-600 aircraft, Boeing 747-400, 767-200/300, KC-46A, and McDonnell Douglas MD-11 aircraft and is certified for 180-minute ETOPS if used in twinjets. These models include the PW4050, PW4052, PW4056, PW4060, PW4062, PW4152, PW4156, PW4158, PW4160, PW4460, PW4462 and PW4650.
The second family is the 100 inch (2.5 m) diameter fan engine developed specifically for Airbus Industrie's A330 twinjet. It has certified thrust from 64,500 to 68,600 lbf (287 to 305 kN). Models include the PW4164, PW4168 and PW4170. The launch of the Advantage70 program was announced at the 2006 Farnborough Airshow with a sale to Kingfisher Airlines. This package increases certified thrust to 70,000 lbf (311 kN), reduces fuel burn by about 1%, and reduces maintenance costs by around 15%.
The third family is the 112 inch (2.8 m) diameter fan engine developed specifically for Boeing's 777 where it was the launch engine. Currently available on the 777-200ER, it has certified thrust from 86,760 to 99,040 lbf (386 to 441 kN). Models include the PW4074, PW4077, PW4084, PW4090 and PW4098. It entered service on June 7, 1995, with United Airlines, and was the first jet engine to enter service with 180-minute ETOPS certification. It was also an engine option for the 777-200 and -300.
The PW4000 features advanced technology materials and Full Authority Digital Engine Control (FADEC), for enhanced fuel economy and reliability, as well as the Technology for Advanced Low NOx (TALON) combustor.
Thrust range: 231–276 kN (52,000 lbf – 62,000 lbf)
Thrust range: 287–311 kN (64,500 lbf – 70,000 lbf)
Thrust range: 329–436 kN (74,000 lbf – 98,000 lbf)
The PW4000 is produced in three distinct models, with differing LP systems to address different thrust needs.
|Type||Two spool high bypass ratio Turbofan|
|Length||153.6 in (390 cm)||167.2 in (425 cm)||190.4 in (484 cm)|
|Compressor||1 fan, 4 LP, 11 HP||1 fan, 5 LP, 11 HP||1 fan, 6 LP, 11 HP||1 fan, 7 LP, 11 HP|
|Turbine||2 HP, 4 LP||2 HP, 5 LP||2 HP, 7 LP|
|Fan||94 in (239 cm)||100 in (254 cm)||112 in (284 cm)|
|Overall pressure ratio||27.5-32.3||32.0-34.1||34.2-42.8|
|Fan pressure ratio||1.65-1.80||1.75-1.76||1.70-1.80|
|Applications||B747-400, B767, MD-11
- General Electric CF6
- General Electric GE90
- Pratt & Whitney PW2000
- Progress D-18T
- Rolls-Royce RB211
- Rolls-Royce Trent
- Jeff Schweitzer, Pratt & Whitney (14–17 July 2003). "Propulsion Technology Readiness for Next Generation Transport Systems". AIAA International Air and Space Symposium and Exposition. doi:10.2514/6.2003-2787.
- Pratt & Whitney. "PW4000-94". Retrieved 20 July 2019.
- Pratt & Whitney. "PW4000-100". Retrieved 20 July 2019.
- Pratt & Whitney. "PW4000-112". Retrieved 20 July 2019.
- "TCDS E24NE" (PDF). FAA. 23 November 2015.
- "TCDS E36NE" (PDF). FAA. 28 May 2014.
- "TCDS E46NE" (PDF). FAA. 23 January 2012.
- "PW4000 94-inch-fan" (PDF). Pratt & Whitney.
- "PW4170 Engine for the A330" (PDF). Pratt & Whitney.
- "PW4000 112-inch-fan" (PDF). Pratt & Whitney.