The Pratt & Whitney PW2000, also known by the military designation F117 and initially referred to as the JT10D, is a series of
high-bypass turbofan
A turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a combination of references to the preceding generation engine technology of the turbojet and the additional fan stag ...
aircraft engines with a
thrust
Thrust is a reaction force described quantitatively by Newton's third law. When a system expels or accelerates mass in one direction, the accelerated mass will cause a force of equal magnitude but opposite direction to be applied to that ...
range from . Built by
Pratt & Whitney
Pratt & Whitney is an American aerospace manufacturer with global service operations. It is a subsidiary of RTX Corporation (formerly Raytheon Technologies). Pratt & Whitney's aircraft engines are widely used in both civil aviation (especially ...
, they were designed for the
Boeing 757
The Boeing 757 is an American Narrow-body aircraft, narrow-body airliner designed and built by Boeing Commercial Airplanes.
The then-named 7N7, a twinjet successor for the trijet Boeing 727, 727, received its first orders in August 1978.
The ...
. As a 757 powerplant, these engines compete with the
Rolls-Royce RB211
The Rolls-Royce RB211 is a British family of high-bypass turbofan engines made by Rolls-Royce Holdings, Rolls-Royce. The engines are capable of generating of thrust. The RB211 engine was the first production turbofan#Three-spool, three-spool e ...
.
Design and development
Pratt & Whitney began working on the JT10D in October 1971 intended for the
McDonnell Douglas YC-15
The McDonnell Douglas YC-15 is a prototype four-engine short take-off and landing (STOL) tactical transport. It was McDonnell Douglas' entrant into the United States Air Force's Advanced Medium STOL Transport (AMST) competition to replace the ...
into the
Advanced Medium STOL Transport project and the
Boeing 767
The Boeing 767 is an American wide-body airliner developed and manufactured by Boeing Commercial Airplanes.
The aircraft was launched as the 7X7 program on July 14, 1978, the prototype first flew on September 26, 1981, and it was certified ...
, then code named 7X7, which first ran in August 1974.
[ In December 1980, Pratt & Whitney changed to a new naming system for its engines and the JT10D became the PW2037.
The PW2000 is a dual-spool, axial air flow, annular combustion, high bypass ]turbofan
A turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft engine, aircraft propulsion. The word "turbofan" is a combination of references to the preceding generation engine technology of the turbojet and the add ...
with a dual-channel full authority digital engine control (FADEC
A full authority digital engine (or electronics) control (FADEC) is a system consisting of a digital computer, called an "electronic engine controller" (EEC) or " engine control unit" (ECU), and its related accessories that control all aspects of a ...
) system. It was certified in 1984 as the first civilian FADEC-controlled aviation engine.compressor
A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor.
Many compressors can be staged, that is, the gas is compressed several times in steps o ...
and high-pressure turbine components.
The first PW2000 series engine, the PW2037, powered the Boeing 757-200 and entered service on January 1, 1983 with Eastern Air Lines
Eastern Air Lines (also colloquially known as Eastern) was a major airline in the United States that operated from 1926 to 1991. Before its dissolution, it was headquartered at Miami International Airport in an unincorporated area of Miami-Dade ...
as the launch customer for the civil aviation version of the engine.
Other than the 757, the PW2000 series engines also power the C-17 Globemaster III
The McDonnell Douglas/Boeing C-17 Globemaster III is a large military transport aircraft developed for the United States Air Force (USAF) between the 1980s to the early 1990s by McDonnell Douglas. The C-17 carries forward the name of two previ ...
military transport; the United States Department of Defense
The United States Department of Defense (DoD, USDOD, or DOD) is an United States federal executive departments, executive department of the federal government of the United States, U.S. federal government charged with coordinating and superv ...
designation for the engine is F117, with the specific variant used on the C-17 being the F117-PW-100. The powerplant first flew on the C-17 in 1991. Still maintaining the F117 engine for the U.S. military, Pratt & Whitney received a $5.5 billion contract modification in June 2023 for engine sustainment in San Francisco, California; Columbus, Georgia; and Tinker Air Force Base, Oklahoma, through September 2027.
The PW2000 also powered the Ilyushin Il-96
The Ilyushin Il-96 () is a Russian Four-engined jet aircraft, four-engined jet long-haul Wide-body aircraft, wide-body airliner designed by Ilyushin in the former Soviet Union and manufactured by the Voronezh Aircraft Production Association in R ...
M; the engine first flew on the Il-96M in 1993.
On October 16, 2008 the NTSB recommended that the FAA issue urgent new inspection procedures on the PW2037 model of the engine, following an uncontained turbine failure event in August 2008. The NTSB recommended that the FAA order PW2037 engines inspected beyond a threshold of flight hours or flight cycles less than that of the event engine, and be reinspected at regular intervals.NTSB Safety Recommendation A-08-85 Urgent and -86
National Transportation Safety Board, Oct 16, 2008
The latest build standard, named PW2043, launched in 1994. It provides over of thrust. Previous generations of engines can be converted to the PW2043 version.
Applications
*
Boeing 757
The Boeing 757 is an American Narrow-body aircraft, narrow-body airliner designed and built by Boeing Commercial Airplanes.
The then-named 7N7, a twinjet successor for the trijet Boeing 727, 727, received its first orders in August 1978.
The ...
**
Boeing C-32A
*
Boeing C-17 Globemaster III
The McDonnell Douglas/Boeing C-17 Globemaster III is a large military transport aircraft developed for the United States Air Force (USAF) between the 1980s to the early 1990s by McDonnell Douglas. The C-17 carries forward the name of two previ ...
*
Ilyushin Il-96M
Specifications (PW2000)
See also
References
External links
Pratt & Whitney F117Pratt & Whitney PW2000
{{DEFAULTSORT:Pratt and Whitney Pw2000
High-bypass turbofan engines
PW2000
1980s turbofan engines