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Pratt & Whitney Advanced Core Testing Validates Performance Goals for PurePowerR Engine Family

Written by thomas · Filed Under Aeronautics News 

May 18, 2010

thomas

EAST HARTFORD, Conn., May 17, 2010  –  Pratt & Whitney has completed
more than 100 hours of testing on its full-scale PurePower engine core,
successfully validating performance goals of its new generation of
commercial jet engines and demonstrating excellent starting and
operability characteristics.  The PurePower family of engines is
designed to power the next generation of passenger aircraft, including
narrow-body jets, regional aircraft and large business jets.  Pratt &
Whitney is a United Technologies Corp. (NYSE:UTX) company.

The results of the PurePower core testing further confirm that the first
PW1000G engine to test is on target for later this summer for the
Bombardier CSeries* single-aisle aircraft, followed by the first engine
to test for the Mitsubishi Regional Jet.  The results also validate the
performance of the PurePower PW800 engine for the next generation of
large business jets.

“We are extremely pleased with the core test results indicating that the
overall engine performance is well aligned with expectations,” said Paul
Adams, Pratt & Whitney senior vice president, Engineering.  “These
results position us to execute the development of our Next Generation
Product Family flawlessly.”

The PurePower family of engines shares a common, advanced core across
the models and feature flight proven, next-generation technology.  The
engine core consists of an ultra-efficient high-pressure compressor, a
low-emissions combustor, and an all new high-pressure turbine.  The
testing program is evaluating engine performance, operability and
structural design characteristics of these key modules.

“The PurePower core, when combined with our lightweight, low-speed
propulsor technologies, enables Pratt & Whitney to deliver world class
levels of fuel burn, noise, and emissions at lower turbine temperatures
and pressures with fewer compressor and turbine stages,” said Bob Saia,
Pratt & Whitney vice president, Next Generation Product Family.  “These
characteristics ultimately result in significant operating cost
advantages to our customers.”

The PurePower PW1000G engine features an advanced gear system that
allows the engine’s fan to operate at a slower speed than the
low-pressure compressor and turbine.  The combination of the gear system
and all-new advanced core delivers double-digit improvements in fuel
efficiency and emissions with a 50-percent reduction in noise over
today’s engines.

The PurePower PW800 engine, which is targeted to power the next
generation of large business jets, is a 10,000- to 20,000-pound thrust
turbofan that has double-digit improvements in fuel burn, environmental
emissions, engine noise and operating costs. The PW800 incorporates an
advanced technology fan, optimized for performance and noise; a next
generation low-emissions combustor and an advanced digital engine
control with integrated health monitoring.

In addition to the core testing, Pratt & Whitney has performed  critical
module-level  testing for the PurePower engine program, including: fan
drive gear system testing with simulations of more than 40,000 takeoffs
and landings; hundreds of hours of testing on the high-pressure
compressor with the advanced design meeting or exceeding efficiency and
operability goals; nearly 200 hours of testing on the low-pressure
compressor verifying low-spool high-speed performance; and extensive fan
module testing with 300 pieces of instrumentation that verified
performance, operability and acoustics of the low speed fan.

The PurePower PW1000G engine has been selected as exclusive power for
the Bombardier CSeries* aircraft scheduled to enter service in 2013 and
the Mitsubishi Regional Jet scheduled to enter service in 2014.  The
PW1000G was also recently selected to power the proposed new Irkut MC-21
narrow-body jet scheduled to enter service in 2016.  The PurePower PW800
engine is targeted to power the next generation of large business jets.

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