The General Electric CF34 is a civilian 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 ...

developed by

GE Aviation General Electric Company, doing business as GE Aerospace, is an American aircraft engine supplier that is headquartered in Evendale, Ohio, outside Cincinnati. It is the legal successor to the original General Electric Company founded in 1892, wh ...

from its TF34 military engine. The CF34 is used on a number of

business Business is the practice of making one's living or making money by producing or Trade, buying and selling Product (business), products (such as goods and Service (economics), services). It is also "any activity or enterprise entered into for ...

and

regional jet A regional jet (RJ) is a jet airliner, jet-powered regional airliner usually defined by having fewer than 100 seats. The first aircraft considered part of this category was the Sud-Aviation Caravelle in 1959, followed by Douglas DC-9, BAC O ...

s, including the

Bombardier CRJ The Bombardier CRJ/Mitsubishi CRJ or CRJ Series (for Canadair Regional Jet) is a family of regional jets introduced in 1991 by Bombardier Aerospace. The CRJ was manufactured by Bombardier Aerospace with the manufacturing of the first CRJ gene ...

series, the Embraer E-Jets, and Comac ARJ21/C909. In 2012, there were 5,600 engines in service.

Design and development

The original engine contained a single stage fan driven by a 4-stage low pressure (LP) turbine, supercharging a 14-stage high pressure (HP) compressor driven by a 2-stage HP turbine, with an annular combustor. Later higher thrust versions of the CF34 feature an advanced technology core, with only 10 HP compressor stages. Latest variants, the and , were derived from the CFM56 engine family, and have a radically different HP spool, containing a 9-stage compressor driven by a single stage turbine. The LP spool has 3 core booster stages behind the fan. Static thrust is for the variant. On wing times can reach 14,000 hours, an overhaul costs over $1.5 million and a set of

LLP A limited liability partnership (LLP) is a partnership in which some or all partners (depending on the jurisdiction) have limited liabilities. It therefore can exhibit aspects of both partnerships and corporations. In an LLP, each partner is n ...

s $2.1 million for a 25,000 cycle life. In 1995, GE invested $200 million to develop the -8C derivative for the CRJ700. GE had proposed updating the

Boeing B-52 Stratofortress The Boeing B-52 Stratofortress is an American long-range, subsonic aircraft, subsonic, jet-powered strategic bomber. The B-52 was designed and built by Boeing, which has continued to provide support and upgrades. It has been operated by the ...

with CF34-10 engines, but the Rolls-Royce F130 was selected in September 2021 instead.

Applications

;CF34-1A * Bombardier Challenger 601-1A ;CF34-3A * Bombardier Challenger 601-3A/3R * Bombardier CRJ100 ;CF34-3B * Bombardier Challenger 604 *

Bombardier Challenger 605 The Bombardier Challenger 600 series is a family of business jets developed by Canadair after a Bill Lear concept, and then produced from 1986 by its new owner, Bombardier Aerospace. At the end of 1975, Canadair began funding the development ...

* Bombardier Challenger 650 *

Bombardier Challenger 850 The Bombardier Challenger 800, originally known as the Challenger SE, is the largest super-midsize business jet A business jet, private jet, or bizjet is a jet aircraft designed for transporting small groups of people, typically business e ...

* Bombardier CRJ200 * Bombardier CRJ440 ;CF34-8C * Bombardier CRJ550 * Bombardier CRJ700 * Bombardier CRJ705 * Bombardier CRJ900 * Bombardier CRJ1000 ;CF34-8E * Embraer 170 * Embraer 175 ;CF34-10A * Comac C909 ;CF34-10E * Embraer 190 * Embraer 195 * Embraer Lineage 1000

Specifications

References

External links

General Electric CF34 page
{{DEFAULTSORT:General Electric Cf34 High-bypass turbofan engines CF34 1980s turbofan engines

Design and development

Applications

Specifications

See also

References

External links