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Garrett TFE731
The Garrett TFE731 (now Honeywell TFE731) is a family of geared turbofan engines commonly used on business jet aircraft. Garrett AiResearch originally designed and built the engine, which due to mergers was later produced by AlliedSignal and now Honeywell Aerospace. Since the engine was introduced in 1972, over 11,000 engines have been built, flying over 100 million flight-hours. Development The TFE731 was based on the core of the TSCP700, which was developed for use as the auxiliary power unit (APU) on the McDonnell Douglas DC-10. The design featured two important factors: low fuel consumption, and low noise profiles that met the newly established U.S. noise abatement regulations. The first test run of the TFE731 occurred in 1970 at Garrett's plant in Torrance, California. The first production model, the TFE731-2, began rolling off the assembly line in August, 1972, and was used on the Learjet 35/36 and Dassault Falcon 10, both of which entered production in 1973. The TF ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is an affinity group for contributors with shared goals within the Wikimedia movement. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sibling 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 Magazine, 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 outsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geared Turbofan
The geared turbofan is a type of turbofan aircraft engine with a planetary gearbox between the low pressure compressor / turbine and the fan, enabling each to spin at its optimum speed. The benefit of the design is lower fuel consumption and much quieter operation. The drawback is that it increases weight and adds complexity. Technology In a conventional turbofan, a single shaft (the "low-pressure" or LP shaft) connects the fan, the low-pressure compressor and the low-pressure turbine (a second concentric shaft connects the high-pressure compressor and high-pressure turbine). In this configuration, the maximum tip speed for the larger radius fan limits the rotational speed for the LP shaft and thus the LP compressor and turbine. At high bypass ratios (and thus also high radius ratios) the rotational speed of the LP turbine and compressor must be relatively low, which means extra compressor and turbine stages are required to keep the average stage loadings and, therefore, overa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ziff Davis
Ziff Davis, Inc. is an American digital media and internet company. Founded in 1927 by William Bernard Ziff Sr. and Bernard George Davis, the company primarily owns technology- and health-oriented media websites, online shopping-related services, internet connectivity services, gaming and entertainment brands, and cybersecurity and martech (marketing technology) tools. Previously, the company was predominantly a publisher of hobbyist magazines. History The company was founded by William B. Ziff Company publisher Bill Ziff Sr. with Bernard Davis. Upon Bill Ziff's death in 1953, William B. Ziff Jr., his son, returned from Germany to lead the company. In 1958, Bernard Davis sold Ziff Jr. his share of Ziff Davis to found Davis Publications, Inc.; Ziff Davis continued to use the Davis surname as Ziff-Davis. Throughout most of Ziff Davis' history, it was a publisher of hobbyist magazines, often ones devoted to expensive, advertiser-rich technical hobbies such as cars, photograp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Learjet 55
The Learjet 55 "Longhorn" is an American business jet manufactured by Learjet. Development and design The Learjet 50 series was first announced at the 1977 Paris Air Show with larger cabins than existing Learjets. The series was to have three variants, the Learjet 54, 55 and 56 but only the Learjet 55 was built. The Learjet 55 was a low-wing cantilever monoplane with NASA-developed winglets. The aircraft has a T-tail and is powered by two Garrett TFE731 turbofans mounted each side of the rear fuselage. It has a retractable tricycle landing gear and an enclosed cabin for up to ten passengers and a cockpit for the two crew. Construction of the Learjet 55 began in April 1978 after extensive testing and work on the wing design which came, initially, from the Learjet 25. The Learjet 55 first flew on 19 April 1979. The first production aircraft were produced starting 18 March 1981. In total, 147 Learjet 55 aircraft were delivered. Variants ;Learjet 54 :Proposed 11-seat variant; not bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lockheed JetStar
The Lockheed JetStar (company designations L-329 and L-1329; designated C-140 in US military service) is a business jet produced from the early 1960s to the 1970s. The JetStar was the first dedicated private jet to enter service, as well as the only such airplane built by Lockheed. It was also one of the largest aircraft in the class for many years, seating ten plus two crew. It is distinguishable from other small jets by its four engines, mounted on the rear of the fuselage, and the "slipper"-style fuel tanks fixed to the wings. Development The JetStar originated as a private project within Lockheed, with an eye to winning a United States Air Force (USAF) requirement that was later dropped due to budget cuts. Lockheed decided to continue the project on its own for the business market. The first two prototypes were equipped with two Bristol Siddeley Orpheus engines, the first of these flying on 4 September 1957. The second of these was also equipped with the wing-mounted "s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dassault Falcon 10
The Dassault Mystère/Falcon 10 is an early corporate jet aircraft developed by French aircraft manufacturer Dassault Aviation. Despite its numbering sequence it was actually developed after the Falcon 20, and although it is sometimes considered as a scaled-down version of that aircraft, it was totally redesigned with a non-circular fuselage, a new wing with slotted flaps, a split passenger door and many simplified circuits compared to the Falcon 20. Production began in 1971 and ceased in 1989, but it remains a popular business jet on the second hand market. By 2018, Falcon 10s from the 1970s were priced at $300,000 to $600,000. Variants ;Minifalcon : This was the original name of the Dassault Falcon 10. ; : Executive transport aircraft. ;Falcon 10MER : Seven aircraft used by the French Navy as instrument trainers, VIP transports, and communications and liaison aircraft. MER stood for ‘Marine Entraînement Radar – Navy Radar Training’. ;Falcon 100: Designed to replace the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Learjet 35
The Learjet Model 35 and Model 36 are a series of American multi-role business jets and military transport aircraft manufactured by Learjet between 1973 and 1993. When used by the United States Air Force, they carry the designation C-21A. Learjet was acquired by Bombardier Aviation in 1990 and is now a subsidiary, so the aircraft is also known as the Bombardier Learjet 35. When first released in 1973, the Learjet 35 was among the fastest medium haul jets of its era. As of 2020, more Learjet 35s have been sold than any other Learjet aircraft, with many still in service after 50 years. The aircraft are powered by two Garrett TFE731-2 turbofan engines. Its cabin can be arranged for six to eight passengers. The longer-range Model 36 has a shortened passenger area to provide more space in the aft fuselage for fuel tanks. The engines are mounted in nacelles on the sides of the aft fuselage. The wings are equipped with single-slotted flaps. The wingtip fuel tanks distinguish the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torrance, California
Torrance is a coastal city in the Los Angeles metropolitan area located in southwestern Los Angeles County, California, United States. The city is part of what is known as the South Bay (Los Angeles County), South Bay region of the metropolitan area. A small section of the city, , abuts the Pacific Ocean. Torrance has a moderate year-round climate with average rainfall of per year.City of Torrance Website: About Torrance () Retrieved April 7, 2009 Torrance was incorporated in 1921, and at the 2020 United States census, 2020 census had a population of 147,067 residents. Torrance has a beachfront and 30 parks located around the city. It is also the birthplace of the American Youth Soccer Organization (AYSO). History Pre-colonial era For tho ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McDonnell Douglas DC-10
The McDonnell Douglas DC-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas. The DC-10 was intended to succeed the Douglas DC-8, DC-8 for long-Range (aeronautics), range flights. It first flew on August 29, 1970; it was introduced on August 5, 1971, by American Airlines. The trijet has two turbofans on underwing pylons and a third one at the base of the vertical stabilizer. The twin-aisle layout has a typical seating for 270 in two classes. The initial DC-10-10 had a range for transcontinental flights. The DC-10-15 had more powerful engines for hot and high airports. The DC-10-30 and –40 models (with a third main landing gear leg to support higher weights) each had intercontinental ranges of up to . The KC-10 Extender (based on the DC-10-30) is a tanker aircraft that was primarily operated by the United States Air Force. Early operations of the DC-10 were afflicted by its poor safety record, which was partially attributable to a design flaw i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auxiliary Power Unit
An auxiliary power unit (APU) is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft and naval ships as well as some large land vehicles. Aircraft APUs generally produce 115 V AC voltage at 400 Hz (rather than 50/60 Hz in mains supply), to run the electrical systems of the aircraft; others can produce 28 V DC voltage. APUs can provide power through single or three-phase systems. A jet fuel starter (JFS) is a similar device to an APU but directly linked to the main engine and started by an onboard compressed air bottle. Transport aircraft History During World War I, the British Coastal class blimps, one of several types of airship operated by the Royal Navy, carried a ABC auxiliary engine. These powered a generator for the craft's radio transmitter and, in an emergency, could power an auxiliary air blower. One of the first military fixed-wing aircraft to use an APU was the British, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honeywell TSCP700
File:Jet-engines-965e4f.jpg, 350px, Technical drawing. Air Intake is on the left rect 307 461 508 556 Power output shaft rect 366 561 548 705 Gearbox rect 452 169 582 264 combustion chamber rect 447 294 582 394 Turbines rect 129 399 297 551 LP compressor rect 312 269 403 496 HP Compressor desc bottom-left Honeywell TSCP700 is a small turboshaft, used as auxiliary power unit on wide-body airliners. Origin and use It was initially developed by Garrett AiResearch, for use as an APU for McDonnell Douglas DC-10. Garrett was merged into AlliedSignal in 1985, then into Honeywell in 1999. Honeywell still provide support for the TSCP700's in circulation. Besides the DC-10, it is also used as APU on the MD-11 and Airbus A300/ A310. Design TSCP700 provides a mechanical output of 105 kW (for TSP700-5 version used on Airbus aircraft). It has a two-shaft architecture. The compressor design is quite peculiar, as the LP compressor is axial and the HP compressor is centrifugal. Af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
