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General Electric T700
The General Electric T700 and CT7 are a family of turboshaft and turboprop engines in the class. Design and development In 1967, General Electric began work on a new turboshaft engine demonstrator designated the "GE12" in response to US Army interest in a next-generation utility helicopter. The GE12 was designed and conceived by GE's Art Adamson and Art Adinolfi. In 1967, both GE and Pratt & Whitney were awarded contracts to work parallel with each other to design, fabricate, and test the technology. The Army effort led, in the 1970s, to development of the Sikorsky S-70 Black Hawk, powered by twin GE "T700" turboshafts, the production descendant of the GE12. The T700 was initially bench-tested in 1973, passed military qualification in 1976, and went into production in 1978. The initial "T700-GE-700" is an ungeared free-turbine turboshaft, with a five-stage axial / one-stage centrifugal mixed-flow compressor, featuring one-piece "blisk" axial stages, with the inlet guide vanes a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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, which split into three separate companies between November 2021 and April 2024, adopting the trade name GE Aerospace after divesting its GE HealthCare, healthcare and GE Vernova, energy divisions. GE Aerospace both manufactures engines under its name and partners with other manufacturers to produce engines. CFM International, the world's leading supplier of aircraft engines and GE's most successful partnership, is a 50/50 joint venture with the French company Safran Aircraft Engines. As of 2020, CFM International holds 39% of the world's commercial aircraft engine market share (while GE Aerospace itself holds a further 14%). GE Aerospace's main competitors in the engine market are Pratt & Whitney and Rolls-Royce Holdings, Rolls-Royce. The d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blisk
A blisk (portmanteau of bladed disk) is a turbomachine component comprising both rotor disk and blades as a single part instead of a disk assembled with individual removable blades. Blisks generally have better aerodynamics than conventional rotors with single blades and are lighter. They may be additively manufactured, integrally cast, machined from a solid piece of material, or made by welding individual blades to a rotor disk. The term is used mainly in aerospace engine design. ''Blisks'' may also be known as integrally bladed rotors (IBR). History Blisk manufacturing has been used since the mid-1980s. It was first used by Sermatech-Lehr (now known as GKN Aerospace) in 1985 for the compressors of the T700 helicopter engine. Since then, its use has continued to increase in major applications for both compressors and fan blade rotors. Examples include the Rocketdyne RS-68 rocket engine and the General Electric F110 turbofan. The F-35B variant of the Joint Strike Fighter us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maintenance On GE T700 Engine Aboard USS Bonhomme Richard (LHD-6) In March 2015
The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure and supporting utilities in industrial, business, and residential installations. Terms such as "predictive" or "planned" maintenance describe various cost-effective practices aimed at keeping equipment operational; these activities occur either before or after a potential failure. Definitions Maintenance functions can be defined as maintenance, repair and overhaul (MRO), and MRO is also used for maintenance, repair and operations. Over time, the terminology of maintenance and MRO has begun to become standardized. The United States Department of Defense uses the following definitions:Federal Standard 1037C and from MIL-STD-188 and from the Department of Defense Dictionary of Military and Associated Terms * Any activity—such as tests, measurements, replacements, adjustments, and repairs—intended to retain or r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CFE CFE738
The CFE CFE738 is a small turbofan engine aimed at the business/commuter jet market manufactured by the CFE Company, and is used on the Dassault Falcon 2000. Design and development The success of the GE27/GLC38 gas generator development of the 1980s led to the formation of the CFE Company by GE and the Garrett Engine Division of Allied Signal (now Honeywell) in 1987. The CFE738 is a two-shaft design, consisting of a single stage bypass fan connected via one shaft to a 3-stage low-pressure (LP) turbine at the rear of the engine; with a six-stage combination low-pressure/high-pressure (LP/HP) axial/centrifugal compressor (five axial stages and one centrifugal stage) driven by a two-stage HP turbine, between the fan and the LP turbine, on the other shaft. There is an axial combustion chamber between the compressor stages and the HP turbine. A mixer is built in to the jetpipe to mix cold bypass air with the hot exhaust gases. The engine has an overall pressure ratio of 35:1, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Let L-610
The Let L-610 is a prototype aircraft for the Czech civil aircraft manufacturer Aircraft Industries, Let Kunovice made in 1988–1997. Design and development In the late 1970s, after the success of the LET L-410 twin engine turboprop, the Soviet airline Aeroflot requested that LET design a replacement for the Antonov An-24 aircraft. Aircraft Industries, LET's L-610 was designed as a twin engined turboprop aircraft powered by the new Czech engine, Walter M602, with a seating capacity of 40. Flight testing was delayed by engine development taking longer than airframe development. Eventually the 1,358 kW (1,822 shp) turboprop engines were finished and the aircraft first flew on 28 December 1988. No aircraft was ever delivered to any commercial customer, although one aircraft was shown in Aeroflot markings during the Paris Air Show in the 1990s. One Let 610 M was delivered to the Czech Air Force, to support manufacturer's certification and test flights process. After the Sovi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CASA CN-235
The CASA/IPTN CN-235 is a medium-range twin-engined Military transport aircraft, transport aircraft that was jointly developed by CASA (aircraft manufacturer), CASA of Spain and Indonesia, Indonesian manufacturer Indonesian Aerospace, IPTN. It is operated as both a regional airliner and military transport; its primary military roles include military transport aircraft, air transport and aerial surveillance. Development of the CN-235 formally commenced in 1980 following the formation of the ''Airtech International'' joint venture on 17 October 1979. Its existence was publicly unveiled at the 1981 Paris Airshow. On 11 November 1983, the prototype CN-235 conducted its maiden flight; the first production aircraft followed on 19 August 1986. On 1 March 1988, the aircraft was put into regular service. Early on, the production of each aircraft was divided, 65% being performed by IPTN while the remainder was performed by CASA. The vast majority of CN-235s have been produced for military ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sikorsky S-92
The Sikorsky S-92 is an American twin-engine medium-lift helicopter built by Sikorsky Aircraft for the civil and military helicopter markets. The S-92 was developed from the Sikorsky S-70 helicopter and has similar parts such as flight control and rotor systems. The H-92 Superhawk is a military version of the S-92 in the utility transport role, capable of carrying 22 troops. The H-92 can also be configured for specific missions, including search and rescue and executive transportation. The CH-148 Cyclone is a shipboard maritime helicopter variant developed for the Royal Canadian Air Force to support naval operations of the Royal Canadian Navy. The Sikorsky VH-92 is a variant under development to replace the United States Marine Corps' Marine One U.S. Presidential transport fleet. Development After the 1973 oil crisis, major oil and gas companies began exploration further offshore, thus creating a need for aircraft such as the S-92 with sufficient capability. Sikorsky Aircr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell 214ST
The Bell 214ST is a medium-lift, twin-engine helicopter descended from Bell Helicopter's ubiquitous UH-1 Huey series. Though it shares a type number with the somewhat-related Bell 214, the 214ST is larger and of quite different appearance. Design and development The Bell 214ST was originally developed as a military project from the Bell 214B BigLifter, specifically for production in Iran and the development by Bell was funded by the Iranian government.Apostolo, Giorgio. ''The Illustrated Encyclopedia of Helicopters'', p. 54. New York: Bonanza Books, 1984. . The fundamental difference was the replacement of the Model 214's single Lycoming LTC-4 turboshaft engine with two General Electric T700 engines, to improve the helicopter's hot and high performance and improve safety. An interim twin-engine conversion of a Model 214 flew on 15 February 1977 in Texas,Green, William, ''Observers Aircraft'', p. 228. Frederick Warne Publishing, 1991. .''Air International'' October 1982, p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NHIndustries NH90
The NHIndustries NH90 is a European medium-sized, twin-engine, multirole military helicopter. It was the first production helicopter to feature entirely fly-by-wire flight controls.Perry, Dominic"Rotor club: Our top 10 most influential helicopters." ''Flight International'', Flight Global, 21 November 2014. There is extensive use of composite materials and electronic sensors. The helicopter has two main versions, the TTH oriented towards land applications (able to carry up to 20 troops) and the NFH, oriented towards naval use and focused on such tasks as ASW and marine SAR. Over 500 have been produced for a dozen users, and it remains in production. The NH90 was developed in response to North Atlantic Treaty Organization (NATO) requirements for a battlefield helicopter which would also be capable of being operated in navy, naval environments. It was developed and is manufactured by NHIndustries, a collaborative company owned by Airbus Helicopters (formally Eurocopter), Leonardo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AgustaWestland AW101
The AgustaWestland AW101 is a medium-lift helicopter in military and civil use. First flown in 1987, it was developed by a joint venture between Westland Helicopters in the United Kingdom and Agusta in Italy in response to national requirements for a modern naval utility helicopter. Several operators, including the armed forces of Britain, Denmark, and Portugal, use the name Merlin for their AW101 aircraft. It is manufactured at factories in Yeovil, England, and Vergiate, Italy. Licensed assembly work has also taken place in Japan and the United States. Prior to 2007, the aircraft had been marketed under the designation EH101. The original designation was EHI 01, from the name given to the Anglo-Italian joint venture—European Helicopter Industries—but a transcription error changed this to EH101. In 2000, Westland Helicopters and Agusta merged to form AgustaWestland, leading to the type's current designation. The AW101 entered into service in 1999 and has since replaced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AH-1 SuperCobra
The Bell AH-1 SuperCobra is a twin-engined attack helicopter that was developed on behalf of, and primarily operated by, the United States Marine Corps (USMC). The twin Cobra family, itself part of the larger Huey family, includes the AH-1J SeaCobra, the AH-1T Improved SeaCobra, and the AH-1W SuperCobra. The Super Cobra was derived from the single-engined AH-1 Cobra, which had been developed during the mid-1960s as an interim gunship for the U.S. Army. The USMC had quickly taken an interest in the type, but sought a twin-engined arrangement for greater operational safety at sea, along with more capable armaments. While initially opposed by the Department of Defense, who were keen to promote commonality across the services, in May 1968, an order for an initial 49 twin-engine AH-1J SeaCobras was issued to Bell. The type entered service during the final months of the US's involvement in the Vietnam War, seeing limited action in the theatre as a result. The USMC promptly sought g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SH-2G Seasprite
The Kaman SH-2G Super Seasprite is an American ship-based helicopter with anti-submarine, anti-surface threat capability, including over-the-horizon targeting. This aircraft extends and increases shipboard sensor and weapon capabilities against several types of enemy threats, including submarines of all types, surface ships, and patrol craft that may be armed with anti-ship missiles. It was originally developed for the United States Navy in the 1980s as a reengined and updated version of the older Kaman SH-2 Seasprite which had been serving since the 1960s in a variety of versions. The G model was an evolution of the SH-2F, which was an important ASW aircraft for naval vessels that could not manage a larger helicopter. The SH-2G entered service in the 1980s and served until 2001 with the U.S. Navy. It went on to serve in several other Naval forces into the 21st Century and is still in active service in several countries. The SH-2G's primary missions include anti-submarine and an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
