Pratt & Whitney PW1000G

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PW1000G
ILA Berlin 2012 PD 140.JPG
Type Geared turbofan
National origin United States
Manufacturer Pratt & Whitney
First run 2008
Major applications Airbus A320neo
Bombardier CSeries
Mitsubishi Regional Jet
Irkut MS-21
Embraer E-Jets E2

The Pratt & Whitney PW1000G is a high-bypass geared turbofan engine family, currently selected as the exclusive engine for the Bombardier CSeries, Mitsubishi Regional Jet (MRJ), Embraer's second generation E-Jets, and as an option on the Irkut MS-21 and Airbus A320neo. The project was previously known as the Geared Turbofan (GTF), and originally the Advanced Technology Fan Integrator (ATFI).

Development[edit]

Pratt & Whitney first attempted to build a geared turbofan starting around 1998, known as the PW8000.[1] This essentially was an upgrade of the existing Pratt & Whitney PW6000 that replaced the fan section with a gearing system and new single-stage fan.[2] After several years of development the PW8000 essentially disappeared.[3] Soon afterwards the ATFI project appeared, using a PW308 core but with a new gearbox and a single-stage fan. It had its first run on March 17, 2001.

This led to the Geared Turbofan (GTF) programme, which was based around a newly designed core jointly developed with MTU Aero Engines of Germany. The German company provides the high-speed low-pressure turbine and various stages of the high-pressure compressor.

In addition to the geared turbofan, the initial designs included a variable-area fan nozzle (VAFN), which allows improvements in propulsive efficiency across a range of the flight envelope.[4] However, the VAFN has since been dropped from production designs due to high system weight.

In July 2008, the GTF was renamed the PW1000G, the first in a new line of "PurePower" engines.[5] Pratt & Whitney claims the PW1000G is 10% to 15% more fuel efficient than current engines used on regional jets and single-aisle jets, as well as being substantially quieter.[6]

The engine was tested on the Pratt & Whitney Boeing 747SP,[6] and the second phase of flight testing for the PW1000G was conducted on an Airbus A340-600. The testbed aircraft, with the engine in the number two pylon position, flew for the first time in Toulouse on October 14, 2008.[7] The PW1100G was first tested on the 747SP in 2013 [1].

Testing of the PW1524G model began in October 2010.[8]

The PW1500G engine successfully achieved Transport Canada type certification on February 20, 2013.[9]

Final versions are expected to be in production in 2013.[6]

Applications[edit]

Specifications[edit]

Source: Pratt&Whitney,[10][11] flightglobal.com,[12][13] Airbus,[14] airinsight.com,[15]

Data from MTU[16]

General characteristics

  • Type: Turbofan
  • Length: 3,800 millimetres (150 in) [17]
  • Diameter: 1,422–2,057 millimetres (56.0–81.0 in)
  • Dry weight:

Components

  • Compressor: Axial flow,1-stage geared fan, 2-3 stage LP, 8 stage HP
  • Combustors: Annular combustion chamber
  • Turbine: Axial, 2-stage HP, 3-stage LP

Performance

The PW1000 Family
Model Fan Diameter Bypass ratio Static Thrust Fuel cons. Noise (St.4) CO2 (t/ac/yr) NO (margin to CAEP 6) Stages Application Service entry
PW1124G
PW1127G
PW1133G
81 in (2.06 m) 12:1 24,000–35,000 lbf (110–160 kN)[19][20] -15% -20 dB -3.600 -55% 1GF-3LPC-8HPC-2HPT-3LPT A320neo October 2015
PW1215G
PW1217G
56 in (1.42 m) 9:1 15,000–17,000 lbf (67–76 kN) -12% -15 dB -2,700 -50% 1GF-2LPC-8HPC-2HPT-3LPT Mitsubishi Regional Jet 2014[21]
PW1428G
PW1431G
81 in (2.06 m) 12:1 28,000–31,000 lbf (120–140 kN) -15% -20 dB -3.600 -55% 1GF-3LPC-8HPC-2HPT-3LPT Irkut MS-21 2016
PW1519G
PW1521G
PW1524G
73 in (1.85 m) 12:1 19,000–24,000 lbf (85–107 kN) -14% -20 dB -3,000 -55% 1GF-3LPC-8HPC-2HPT-3LPT CSeries 2013
PW1700G 56 in (1.42 m) 9:1 15,000 lbf (67 kN) -12% -15 dB -2.700 -50% 1GF-2LPC-8HPC-2HPT-3LPT E-Jets E2 2018
PW1900G 73 in (1.85 m) 12:1 19,000–22,000 lbf (85–98 kN) -15% -20 dB -3.000 -55% 1GF-3LPC-8HPC-2HPT-3LPT E-Jets E2 2018

See also[edit]

Related development
Comparable engines
Related lists

References[edit]

  • 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]