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, 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, and originally the Advanced Technology
Fan Integrator.
Development Pratt & Whitney first attempted to build a
geared turbofan starting around 1998, known as the PW8000. 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. After several years of development the PW8000 essentially disappeared.
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 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,
which allows improvements in propulsive efficiency across a range of the flight envelope. 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.
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.
The engine was tested on the Pratt & Whitney Boeing 747SP, 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. The PW1100G was first tested on the 747SP in 2013 [1].
Testing of the PW1524G model began in October 2010.
The PW1500G engine successfully achieved Transport Canada type certification on February 20,
2013. Final versions are expected to be in production
in 2013. Applications
Airbus A320neo Bombardier CSeries
Irkut MS-21 Mitsubishi Regional Jet
Embraer E-Jets E2 Specifications
Source: Pratt&Whitney, flightglobal.com, Airbus, airinsight.com,
Data from MTU General characteristics
Type: Turbofan Length:
Diameter: 1,422–2,057 millimetres 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
Maximum thrust: 14,000–35,000 lbf Power-to-weight ratio:
See also
Pratt & Whitney/Allison 578-DX General Electric GE36
Related development Pratt & Whitney Canada PW800
Comparable engines Garrett TFE731
CFM International LEAP Aviadvigatel PD-14
Related lists List of aircraft engines
References
Gunston, Bill. World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire,
England, UK: Sutton Publishing Limited. ISBN 0-7509-4479-X. External links
Pratt & Whitney PurePower(R) Engines Pratt & Whitney Launches Geared Turbofan Engine
with Mitsubishi Regional Jet Pratt & Whitney Geared Turbofan engine selected
to power Mitsubishi Regional Jet MTU Aero Engines designs high-speed turbine
for P&W's GTF geared turbofan First phase of GTF flight testing complete
P&W readies for CSeries “third knob” engine testing
Jets Gear up to Fly Greener