| Institut de Stratégie Comparée, Commission Française d'Histoire Militaire, Institut d'Histoire des Conflits Contemporains |
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LES
PW 2000 ET
4000 Robert
Leduc Senior
Vice President Propulsion
Systems Pratt
& Whitney
Thank you very much. I would like to begin by saying on the behalf of
MM. David and Krapek how pleased I am to participate in such a prestigious
event.
As many of you may already know, Pratt & Whitney is part of
United Technologies Corporation (UTC). UTC is comprised of companies that
are either number 1 or number 2 in the market segments where they compete.
Otis in elevators, Carrier in HVAC systems, Sikorsky in helicopters,
Hamilton Standard in propellers and electronic engine controls and UT
Automotive in wiring harnesses. In 1994, UTC’s total revenues were
slightly above $21 billion (USD) and Pratt contributed $5.8 billion or 27%.
Pratt was founded 70 years ago by Frederick Brant Rentschler who is
pictured here standing next to a Boeing F2B-1 which was the first
operational aircraft to use Pratt’s venerable WASP engine. The WASP-1340
was in production until 1960 when the 35,000th unit was delivered. It is
interesting to note that shipments stabilized at 2900 engines per month
during the first World War which equates to one engine very fourteen
minutes.
Today, Pratt is comprised of five major business segments with 30,000
people and 16 million square feet under roof.
We have produced over 28,000
large commercial turbojet and turbofan engines. There are still over 12,000
JT8D’s in service today on Boeing 727, 737-100 and 200, Douglas DC-9 and
MD80 (arguably the workhorse of the industry). The JT9D, though out of
production, powers older A310s, A300s, 747s, 767s, and DC-10s. The PW2000 on
the Boeing 757 and PW4000 which is on all widebody aircraft currently in
production round out our commercial product offerings.
Pratt & Whitney engines power aircraft at over 460 operators
worldwide - 75% of the world’s total operators - generating over
30 million dependable engine flight hours per year.
The PW2000 was certified at 37,000 pounds of thrust in 1983 and
40,000 pounds of thrust in 1987 on the Boeing 757. Since that time 670
engines have been
In February of this year, the PW2000 was certified at 43,000 pounds
of thrust in anticipation of a stretch version of the 757 and potentially
for future versions of Airbus’ A340. This latest configuration
dramatically increases engine durability and lowers maintenance cost by 20%
by supercharging the core and through improvements in cooling techniques and
materials. Delta Airlines recently took delivery of this configuration.
The key to the increased durability and decreased maintenance cost
was additional first blade temperature margin. It went from 40 degrees in
1989 to 300 degrees in this latest version as depicted here.
I would now like to turn to our PW4000 engine family. The PW4000
powers all widebody aircraft in production today, including the large twins -
Airbus’ A330 and Boeing’s 777.
The family consists of 3 fan diameters. The 94 fan powers Boeing’s
747 and 767, Airbus’ A300 and A310 and
To date, the PW4000 has accumulated over 14 million engine flight
hours. For those engines in ETOPS configuration, an in-flight shutdown rate
of 0.009 or approximately one per 100,000 hours of operation has been
demonstrated - better than twice the certification requirement.
In June of 1993, we certified our Phase III configuration for our 94
engine. This variant yielded a 2% TSFC improvement on Boeing 767 and 747 and
3% improvement on MD-11, A300 and A310. We improved nacelle performance on
the
In May of 1994, the A330/PW4168 combination was certified. First
revenue flight was
Presently, there are 130 firm and option aircraft on order. We
currently enjoy a leading 45% share of customers. The next major A330 engine
announcement should be Korean Airlines which we believe will happen shortly.
Over five years ago, we set some very aggressive goals for the
PW4084. One was to achieve 180 minute ETOPS prior to entry into service with
United Airlines in June 1995, an unprecedented achievement. Three of our
engines and one of Boeing’s five Pratt & Whitney powered flight test
aircraft was dedicated to achieving this goal. Concurrent with a near
flawless engine development program, the airplane successfully completed the
key milestone, a 1,000 cycle, high endurance flight test program, on May 22
of this year. On May 30, we realized our goal when, for the very first time,
the FAA granted the Pratt & Whitney powered 777 180 minute ETOPS prior
to entry into service.
The first flight of the Boeing 777, took place nearly one year ago on
As of today, 230 firm and option 777 aircraft have been ordered. Our
PW4084 has captured a 54% share of these. As with the A330, the next 777
engine selection announcement should come from Korean Airlines shortly.
As we look to the future, heavier gross weight versions of the 777
will require more thrust. Boeing is planning to introduce a 632,500 pound
MTOGW version in early 1997 which will require 90,000 pounds of thrust and a
660,000 pound MTOGW which will require up to 98,000 pounds of thrust. We
have already commenced the development of both of these engines.
Growth from 84,000 pounds of thrust to 90,000 pounds of thrust is
essentially a throttle push. Incorporation of our three dimensional NASTAR
high pressure compressor aerodynamics and upgraded high pressure and low
pressure turbine materials will allow the throttle push. First engine to
test will be in July of this year with an entry into service date of January
1997.
The 98,000 pound thrust version is identically common with the 90,000
pound thrust engine from the high compressor rearward. A high flow fan (in
the same 112 diameter) and supercharged low pressure compressor provide the
thrust growth. The nacelle is lengthened by approximately seven inches to
accommodate these changes, but nacelle nozzle areas are held fixed. We
believe the 660,000 pound MTOGW 777 in combination with the 98,000 pound
thrust engine will not only be the most capable aircraft/engine combination,
but will also be the best selling model as we enter the 21st century.
We have also begun development work on our Mid Thrust Family Engine
(MTFE). We believe there is a sizable replacement market for 100 seat class
aircraft that will require a simple, low cost solution.
As a result, we have selected a
cycle that de-emphasizes fuel burn and emphasizes the use of low cost
materials. We believe we have up to a $300,000 advantage in first cost
versus our competition as well as a significant maintenance cost advantage.
We are currently engaged in discussions with several airframers. Entry into
service is expected to be in the 1999-2000 time frame.
Finally, we continue to invest in our Advanced Ducted Propulsor
(ADP). Since 1987, we and our partners, MTU and Fiat, have invested over
$500 million in this technology. We have successfully demonstrated dramatic
TSFC (20% at sea level) and noise (6 dB) benefits. We recently successfully
tested a flight weight gear system and have begun to look at translating
nozzles as an alternative to variable pitch fan systems. At the end of 1995,
we will have demonstrated full technology readiness clearing the way for
program launch. I mentioned we were looking at a version of the PW2000 for
advanced versions of the A340. Concurrently, we are also assessing ADP
concepts in concert with Airbus.
We believe the product portfolio I have just described will
strategically position us well in the future and help us to retain our
rightful place as the preeminent engine manufacturer in the world.
Thank you again for your
attention and the opportunity to address this esteemed gathering.
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