Pratt & Whitney PW4000

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PW4000
Pratt & Whitney PW4074 B777.jpg
A PW4074 powering an ANA Boeing 777
Type Turbofan
Manufacturer Pratt & Whitney
First run April 1984
Major applications Airbus A300
Airbus A310
Airbus A330
Boeing 747-400
Boeing 767
Boeing 777
Boeing KC-46
McDonnell Douglas MD-11
Developed into Engine Alliance GP7000

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.

Design and development[edit]

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 and McDonnell Douglas MD-11 aircraft and is certified for 180-minute ETOPS if used in twinjets. These models include the PW4052, PW4056, PW4060, PW4062, PW4062A, PW4152, PW4156A, PW4156, PW4158, PW4460, and PW4462.

A Pratt & Whitney PW4098 engine at the Steven F. Udvar-Hazy Center

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 are numbered PW4164, PW4168, and PW4168A. The launch of the Advantage70 program was announced at the 2006 Farnborough Airshow with a sale to Kingfisher Airlines.[1] This package will increase certified thrust to 70,000 lbf (311 kN,) reduce fuel burn by about 1%, and reduce maintenance costs by around 15%.[2]

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. It has certified thrust from 86,760 to 99,040 lbf (386 to 441 kN). Model numbers are PW4074, PW4077, PW4077D, PW4084, PW4084D, PW4090, and PW4098. It entered service in June 1995 with United Airlines, and was the first jet engine to enter service with 180-minute ETOPS certification. It can power all the 777 versions except the 300ER and 200LR.

The PW4000 features advanced technology materials and Full Authority Digital Engine Control (FADEC), for good fuel economy and reliability.

Variants[edit]

PW4000-94[edit]

Thrust range: 52,000 lbs – 62,000 lbs[1]

  • PW4052
  • PW4056
  • PW4060
  • PW4062
  • PW4062A
  • PW4152
  • PW4156A
  • PW4156
  • PW4158
  • PW4460
  • PW4462

PW4000-100[edit]

Thrust range: 64,500 lbs – 70,000 lbs[2]

  • PW4164
  • PW4168
  • PW4168A
  • PW4170

PW4000-112[edit]

A Pratt & Whitney PW4098 engine for advanced Boeing 777 models at Boeing's Future of Flight museum

Thrust range: 74,000 lbs – 98,000 lbs[3]

  • PW4074/74D
  • PW4077/77D
  • PW4084/84D
  • PW4090
  • PW4098

Applications[edit]

A PW4056 on a United Boeing 747

Specifications (PW4084)[edit]

Data from [4][5]

General characteristics

  • Type: Two spool high bypass ratio Turbofan
  • Length: 163.1 in (4.14 m)
  • Diameter: 112 in (2.54 m) (fan)
  • Dry weight:

Components

  • Compressor: 1 stage fan, 5 stage low pressure compressor, 15 stage (5 variable) high pressure compressor
  • Combustors: Annular
  • Turbine: 2 stage high pressure turbine, 5 stage low pressure turbine

Performance

See also[edit]

Related development
Comparable engines
Related lists

References[edit]

  1. ^ Pratt & Whitney. "PW4000-94". Retrieved 4 January 2010. 
  2. ^ Pratt & Whitney. "PW4000-100". Retrieved 4 January 2010. 
  3. ^ Pratt & Whitney. "PW4000-112". Retrieved 4 January 2010. 
  4. ^ The PW4000 1000". International Aviation Services Group Engine Report. Accessed 2 Nov 2009
  5. ^ PW4000-100. P&W Website. Accessed 2 Nov 2009.
  • Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. ISBN 0-7509-4479-X. 

External links[edit]