The Pratt & Whitney Canada JT15D is a small

turbofan The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which achieves mechanical ...

engine built by

Pratt & Whitney Canada Pratt & Whitney Canada (PWC or P&WC) is a Canada-based aircraft engine manufacturer. PWC's headquarters are in Longueuil, Quebec, just outside Montreal. It is a division of the larger US-based Pratt & Whitney (P&W), itself a business unit of ...

. It was introduced in 1971 at thrust, and has since undergone a series of upgrades to just over thrust in the latest versions. It is the primary powerplant for a wide variety of smaller jet aircraft, notably business jets.

Design and development

When it first ran in 1967 the JT15D was rare among turbofan engines in that it uses a

centrifugal compressor Centrifugal compressors, sometimes called impeller compressors or radial compressors, are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. They achieve pressure rise by adding energy to the continuous flow of fluid through th ...

as its high-pressure stage. About 70% of the air passing through the fan goes down the bypass duct. The JT15D-4 and later variants use a "booster" axial stage behind the fan which runs at the same speed as the fan and directs the remaining 30% of the air into the high-pressure compressor, after which it passes into a reverse-flow

annular combustor A combustor is a component or area of a gas turbine, ramjet, or scramjet engine where combustion takes place. It is also known as a burner, combustion chamber or flame holder. In a gas turbine engine, the ''combustor'' or combustion chamber is fed ...

. The hot gases flow through a high-pressure turbine that drives the centrifugal compressor, and a low-pressure turbine that drives the fan and booster. The engine was first run in August 1967 before being test flown on an Avro Canada CF-100 Canuck in an underslung external test pod.

Variants

;JT15D-1:The first model was introduced to power the

Cessna Citation I The Cessna 500 Citation I is a small business jet produced by Cessna, the basis of the Citation family. The Fanjet 500 prototype was announced in October 1968, first flew on September 15, 1969, and was certified as the 500 Citation on Septembe ...

, then known as the Fanjet 500. Deliveries started in 1972, and eventually on 1,417 -1s were delivered. ;JT15D-1A: ;JT15D-1B: ;JT15D-4:Introduced in 1973, improving thrust to . The -4 was the primary engine for the Cessna Citation II, and went on to find use on the Mitsubishi Diamond 1A, Aerospatiale Corvette and SIAI-Marchetti S.211. Eventually 2,195 engines of the -4 series were delivered. ;JT15D-4A: ;JT15D-4B: ;JT15D-4C: ;JT15D-4D: ;JT15D-5: Certified in 1983. The first versions delivered and were used on the

Beechjet 400A The Hawker 400 (also known as the Beechjet 400) is a light business jet. Initially designed and built by Mitsubishi, it has been further developed and updated by the Beech Aircraft Company, now part of Textron Aviation. It was produced over 3 ...

and Cessna T-47A. Several minor versions were introduced, the -5A for the

Cessna Citation V The Cessna Citation V is a business jet built by Cessna. A stretched version of the Citation S/II, a Model 560 prototype flew in August 1987, it was certified on December 9, 1988, and delivered from April 1989; were delivered until 2011. The ...

, while the -5B powered the Beechcraft T-1A Jayhawk, the -5C the DASA Ranger 2000 and S-211A. ;JT15D-5A: ;JT15D-5B: ;JT15D-5C: ;JT15D-5D: Certified in 1993, increased thrust again, this time to . The -5D is used on the

Cessna UC-35 The Cessna Citation V is a business jet built by Cessna. A stretched version of the Citation S/II, a Model 560 prototype flew in August 1987, it was certified on December 9, 1988, and delivered from April 1989; were delivered until 2011. The ...

A and Cessna Citation Ultra. ;JT15D-5F:

Applications

Aérospatiale Corvette The Aérospatiale SN 601 Corvette is a French business jet of the early 1970s developed and manufactured by aerospace manufacturer Aérospatiale. Sales of the type were disappointing, leading to only 40 Corvettes being constructed, including the ...

Alenia Aermacchi M-311 The Aermacchi M-345 is a turbofan-powered military trainer aircraft. It is a development of the SIAI-Marchetti S.211. Development Origins During 1997, Italian aircraft manufacturer Aermacchi acquired SIAI-Marchetti; this purchase included the ...

Boeing Bird of Prey The Boeing Bird of Prey was a black project aircraft, intended to demonstrate stealth technology. It was developed by McDonnell Douglas and Boeing in the 1990s.

* Beechcraft Beechjet 400 *

* Cessna Citation II *

/Ultra *

EADS Barracuda Airbus SE (; ; ; ) is a European multinational aerospace corporation. Airbus designs, manufactures and sells civil and military aerospace products worldwide and manufactures aircraft throughout the world. The company has three divisions: '' ...

* Hawker 400 * Honda MH02 *

Mitsubishi MU-300 Diamond The Hawker 400 (also known as the Beechjet 400) is a light business jet. Initially designed and built by Mitsubishi, it has been further developed and updated by the Beech Aircraft Company, now part of Textron Aviation. It was produced over 3 ...

Northrop Grumman X-47A Pegasus The Northrop Grumman X-47 is a demonstration unmanned combat aerial vehicle. The X-47 began as part of DARPA's J-UCAS program, and is now part of the United States Navy's UCAS-D program to create a carrier-based unmanned aircraft. Unlike the ...

* Raytheon T-1 Jayhawk * Rockwell Ranger 2000 *

Scaled Composites 401 The Scaled Composites Sierra (Model 401) is an American experimental aircraft, designed and produced by Scaled Composites of Mojave Spaceport, Mojave, California, introduced in 2017. The two examples built were constructed for an unnamed cus ...

Scaled Composites ARES The Scaled Composites ARES is a demonstrator aircraft built by Scaled Composites. ARES is an acronym for ''Agile Responsive Effective Support''. Development In 1981, U.S. Army Aviators Jim Kreutz and Milo Burroughs undertook a study for a '' ...

* SIAI-Marchetti S.211/Aermacchi S-211 *

Sport Jet II The Sport Jet II was an American amateur-built aircraft that was under development by Sport-Jet, Limited. The Sport Jet was designed by Robert Bornhofen who licensed the intellectual property to Excel Jet. The aircraft was intended to be supp ...

Stratos 716X Stratos may refer to: People As surname *Andreas Stratos (1905–1981), Greek politician and historian *Demetrio Stratos (1945–1979), Italian vocalist, multi-instrumentalist, and music researcher *Nikolaos Stratos (1872–1922), Greek politicia ...

Specifications (JT15D-5D)

References

Notes

Bibliography

* Gunston, Bill. ''World Encyclopedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989.

External links

PWC JT15D Product Overview page
{{DEFAULTSORT:Pratt and Whitney Canada JT15D 1960s turbofan engines JT15D Medium-bypass turbofan engines Centrifugal-flow turbojet engines