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GE CF34
The General Electric CF34 is a civilian high-bypass turbofan developed by GE Aircraft Engines from its TF34 military engine. The CF34 is used on a number of business and regional jets, including the Bombardier CRJ series, the Embraer E-Jets, and Comac ARJ21. 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 HP compressor driven by a 2-stage high pressure (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 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by '' Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regional Jet
A regional jet (RJ) is a jet-powered regional airliner with fewer than 100 seats. The first one was the Sud-Aviation Caravelle in 1959, followed by the widespread Yakovlev Yak-40, Fokker F-28, and BAe 146. The 1990s saw the emergence of the most widespread Canadair Regional Jet and its Embraer Regional Jet counterpart, then the larger Embraer E-Jet and multiple competing projects. In the US, they are limited in size by scope clauses. The market was consolidated as Bombardier Aviation sold its airliner programs between 2017 and 2019, leaving Embraer as the sole large independent regional jet manufacturer, while emerging players try to push competitors: the Mitsubishi SpaceJet, Sukhoi Superjet 100, Comac ARJ21, and Antonov An-148. Definition ''Regional Jet'' is a term in industry jargon and not a regulatory category. Embry–Riddle Aeronautical University defines the regional jet as up to 100 seats in capacity. This is also the limit capacity for two flight attendants. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombardier CRJ700/900/1000
The Bombardier CRJ700, CRJ900, and CRJ1000 are a family of regional jet airliners that were designed and manufactured by Canadian transportation conglomerate Bombardier (formerly Canadair) between 1999 and 2020. Their design was derived from the smaller CRJ100 and 200 airliners, the other members of the Bombardier CRJ aircraft family. The CRJ program was acquired by Japanese corporation Mitsubishi Heavy Industries in 2020, which ended production of the aircraft. During the 1990s, Bombardier initiated development on the ''CRJ-X'', a program to produce enlarged derivatives of its popular CRJ100/200 family. Officially launched in 1997, the CRJ700's maiden flight took place on 27 May 1999; it was soon followed by the stretched CRJ900 variant. Several additional variants of the type were subsequently introduced, including the elongated CRJ1000 and the CRJ550 and CRJ705 which were modified to comply with scope clauses. Competitors included the British Aerospace 146, the Embraer E-Je ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CRJ200
The Bombardier CRJ100 and CRJ200 (previously Canadair CRJ100 and CRJ200) is a regional jet designed and manufactured by Bombardier Aerospace between 1991 and 2006, the first of the Bombardier CRJ family. The ''Canadair Regional Jet'' (CRJ) program, derived from the Challenger 600 business jet, was launched in early 1989. The first CRJ100 prototype made its maiden flight on 10 May 1991. Canada's first jet airliner to enter commercial service was introduced by launch customer Lufthansa in 1992. The 50 seat aircraft is powered by two GE CF34 turbofans, mounted on the rear fuselage. The CRJ200 has more efficient turbofan engines for lower fuel consumption, increased cruise altitude and speed. During the late 1990s, it was stretched into the CRJ700 series. Production ended in 2006 but many remain in service. In 2020, Mitsubishi Heavy Industries purchased the entire CRJ line from Bombardier, and will continue support for the aircraft. Development Origins The CRJ family has its or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Challenger 600
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 of LearStar 600, and then bought the design for a wide-cabin business jet in April 1976. On 29 October, the programme was launched, backed by the Canadian federal government, and designed to comply with new Federal Aviation Regulations#Part 25, FAR part 25 standards. In March 1977, it was renamed the Challenger 600 after Bill Lear was phased out, and the original conventional tail was changed for a T-tail among other developments. The first prototype was rolled out on 25 May 1978, and performed its maiden flight on 8 November. The flight test program saw a deadly crash on 3 April 1980, but Department of Transport (Canada), Transport Canada approved the CL-600 type certification on 10 August 1980. In 1986, Canadair was close to bankruptcy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embraer Lineage 1000
The Embraer Lineage 1000 is a variant of the Embraer 190 regional jet airliner, launched as a private jet on May 2, 2006. Manufactured by the Brazilian aerospace firm Embraer, the Lineage is advertised as an "ultra-large" business jet with comfortable seating for 19. Design The Lineage 1000 is based on the Embraer 190 airliner, with added fuel tanks in the lower deck cargo hold space, nearly doubling the jet's range. It boasts a lavish interior, divided into up to five sections including an optional bedroom, a washroom with running water, and a walk-in cargo area at the rear. Its fuselage cross-section is larger than similarly priced business jets like the $50.4M Global 5000, $53.8M Falcon 7X or $54.5M Gulfstream G600, but smaller than other airliner conversions; the Boeing 737-700 based BBJ1 costing $71.4M or Airbus A319 based ACJ319 costing $87.0M. Development The Lineage 1000 received its certification from Brazil's ANAC and from EASA in December 2008. It was certifie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombardier CRJ700
The Bombardier CRJ700, CRJ900, and CRJ1000 are a family of regional jet airliners that were designed and manufactured by Canadian transportation conglomerate Bombardier (formerly Canadair) between 1999 and 2020. Their design was derived from the smaller CRJ100 and 200 airliners, the other members of the Bombardier CRJ aircraft family. The CRJ program was acquired by Japanese corporation Mitsubishi Heavy Industries in 2020, which ended production of the aircraft. During the 1990s, Bombardier initiated development on the ''CRJ-X'', a program to produce enlarged derivatives of its popular CRJ100/200 family. Officially launched in 1997, the CRJ700's maiden flight took place on 27 May 1999; it was soon followed by the stretched CRJ900 variant. Several additional variants of the type were subsequently introduced, including the elongated CRJ1000 and the CRJ550 and CRJ705 which were modified to comply with scope clauses. Competitors included the British Aerospace 146, the Embraer E-J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombardier Challenger 600
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 of LearStar 600, and then bought the design for a wide-cabin business jet in April 1976. On 29 October, the programme was launched, backed by the Canadian federal government, and designed to comply with new FAR part 25 standards. In March 1977, it was renamed the Challenger 600 after Bill Lear was phased out, and the original conventional tail was changed for a T-tail among other developments. The first prototype was rolled out on 25 May 1978, and performed its maiden flight on 8 November. The flight test program saw a deadly crash on 3 April 1980, but Transport Canada approved the CL-600 type certification on 10 August 1980. In 1986, Canadair was close to bankruptcy and was bought by Bombardier. The jet was later stretched into the Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing B-52 Stratofortress
The Boeing B-52 Stratofortress is an American long-range, 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 United States Air Force (USAF) since the 1950s. The bomber is capable of carrying up to 70,000 pounds (32,000 kg) of weapons,"Fact Sheet: B-52 Superfortress." ''Minot Air Force Base'', United States Air Force, October 2005. Retrieved: 12 January 2009. and has a typical combat range of around 8,800 miles (14,080 km) without aerial refueling. Beginning with the successful contract bid in June 1946, the B-52 design evolved from a [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CRJ700
The Bombardier CRJ700, CRJ900, and CRJ1000 are a family of regional jet airliners that were designed and manufactured by Canadian transportation conglomerate Bombardier Inc., Bombardier (formerly Canadair) between 1999 and 2020. Their design was derived from the smaller Bombardier CRJ100/200, CRJ100 and 200 airliners, the other members of the Bombardier CRJ aircraft family. The CRJ program was acquired by Japanese corporation Mitsubishi Heavy Industries in 2020, which ended production of the aircraft. During the 1990s, Bombardier initiated development on the ''CRJ-X'', a program to produce enlarged derivatives of its popular CRJ100/200 family. Officially launched in 1997, the CRJ700's maiden flight took place on 27 May 1999; it was soon followed by the stretched CRJ900 variant. Several additional variants of the type were subsequently introduced, including the elongated CRJ1000 and the CRJ550 and CRJ705 which were modified to comply with scope clauses. Competitors included the B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Part
An aircraft part is an article or component approved for installation on a type-certificated aircraft. Approval for these parts is derived from the jurisdictions of the countries that an aircraft is based. In the United States, the Federal Aviation Administration oversees the approval for these parts under Federal Aviation Regulation Part 21. Manufacture of parts Production Certificate A production certificate holder may produce parts from the type design that is associated with the production approval. Parts manufactured under a Production Certificate are considered to be "approved parts." Parts Manufacture Approval A Parts Manufacturer Approval, or PMA, is one way to obtain approval to produce replacement or modification parts for installation on a type-certificated product. Such parts are considered to be "approved parts." Technical Standard Order Authorization Parts and assemblies may be produced under a Technical Standard Order Authorization (TSOA). Such parts are con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Between Overhauls
Time between overhauls (abbreviated as TBO or TBOH) is the manufacturer's recommended number of running hours or calendar time before an aircraft engine or other component requires overhaul. On rotorcraft, many components have recommended or mandatory TBOs, including main rotor blades, tail rotor blades and gearboxes. For engines, the time between overhauls is generally a function of the complexity of the engine and how it is used. Piston-based engines are much more complex than turbine-powered engines, and generally have TBOs on the order of 1,200 to 2,000 hours of running time. They tend toward the lower number if they are new designs, or include boosting options such as a turbocharger. In comparison, jet engines and turboprop A turboprop is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. Fuel ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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