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CFM Leap
The CFM International LEAP ("Leading Edge Aviation Propulsion") is a high-bypass turbofan engine produced by CFM International, a 50–50 joint venture between American GE Aviation and French Safran Aircraft Engines (formerly Snecma). It is the successor of the successful CFM56 and competes with the Pratt & Whitney PW1000G to power narrow-body aircraft. Design The LEAP's basic architecture includes a scaled-down version of Safran's low pressure turbine used on the GEnx engine. The fan has flexible blades manufactured by a resin transfer molding process, which are designed to untwist as the fan's rotational speed increases. While the LEAP is designed to operate at a higher pressure than the CFM56 (which is partly why it is more efficient), CFM plans to set the operating pressure lower than the maximum to maximize the engine's service life and reliability. Currently proposed for the LEAP is a greater use of composite materials, a blisk fan in the compressor, a second-generatio ... [...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] |
Safran
Safran S.A. is a French multinational company that designs, develops and manufactures aircraft engines, rocket engines as well as various aerospace and defense-related equipment or their components. It was formed by a merger between SNECMA and the defense electronics specialist SAGEM in 2005. Safran's acquisition of Zodiac Aerospace in 2018 significantly expanded its aeronautical activities. Employing over 95,000 people and generating 24.64 billion euros in sales in 2019, the company is listed on the Euronext stock exchange and is part of the CAC 40 and Euro Stoxx 50. Its headquarters are located in Paris. Name The name Safran was chosen from 4,250 suggestions, including 1,750 proposed by employees. As a holding company for many subsidiaries, the name was deemed suitable for the suggestion of direction, movement, and strategy. Safran translates as rudder blade and as saffron, which the company highlights as one of the catalysts for early international trade. History Or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airbus A321neo
The Airbus A320neo family is a development of the A320 family of narrow-body airliners produced by Airbus. The A320neo family (''neo'' for "new engine option") is based on the previous A319, A320 and A321 ( enhanced variant), which was then renamed A320ceo, for "current engine option". Re-engined with CFM LEAP-1A or Pratt & Whitney PW1000G engines and fitted with sharklets as standard, it is 15% to 20% more fuel efficient than the A320ceo (Enhanced) family. It was launched on 1 December 2010, made its first flight on 25 September 2014 and was introduced by Lufthansa on 25 January 2016. By 2019, the A320neo had a 60% market share against the competing Boeing 737 MAX. , a total of 8,502 A320neo family aircraft had been ordered by more than 130 customers, of which 2,341 aircraft had been delivered. The global A320neo fleet had completed more than 5.51 million flights over 11 million block hours without accidents. Development In 2006 Airbus started the A320 Enhanced (A320E) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COMAC
, type = State-owned limited company , industry = Aviation , founded = , founder = , location_city = Pudong, Shanghai , location_country = China , area_served = Worldwide , products = Commercial airliners , services = , key_people = He Dongfeng (Chairman)Zhao Yuerang (President) , revenue = , operating_income = , net_income = , assets = , equity = , owner = SASAC , num_employees = , subsid = , homepage www.comac.cc, footnotes = The Commercial Aircraft Corporation of China, Ltd. (COMAC, ) is a Chinese state-owned aerospace manufacturer established on 11 May 2008 in Shanghai. The headquarters are in Pudong, Shanghai. The company has a registered capital of RMB 19 billion ( as of May 2008). The corporation is a designer and constructor of large passenger aircraft with capacities of over 150 passengers. The first jet to be marketed is the ARJ21 developed by China Aviation Industry Corporation I, which will be followed by the C919, which made its ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing
The Boeing Company () is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, telecommunications equipment, and missiles worldwide. The company also provides leasing and product support services. Boeing is among the largest global aerospace manufacturers; it is the third-largest defense contractor in the world based on 2020 revenue, and is the largest exporter in the United States by dollar value. Boeing stock is included in the Dow Jones Industrial Average. Boeing is incorporated in Delaware. Boeing was founded by William Boeing in Seattle, Washington, on July 15, 1916. The present corporation is the result of the merger of Boeing with McDonnell Douglas on August 1, 1997. Then chairman and CEO of Boeing, Philip M. Condit, assumed those roles in the combined company, while Harry Stonecipher, former CEO of McDonnell Douglas, became president and COO. The Boeing Company's corporate headquarters is in Chicago, Illi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airbus
Airbus SE (; ; ; ) is a European Multinational corporation, multinational aerospace corporation. Airbus designs, manufactures and sells civil and military aerospace manufacturer, aerospace products worldwide and manufactures aircraft throughout the world. The company has three divisions: ''Airbus Commercial Aircraft, Commercial Aircraft (Airbus S.A.S.)'', ''Airbus Defence and Space, Defence and Space'', and ''Airbus Helicopters, Helicopters'', the third being the largest in its industry in terms of revenues and turbine helicopter deliveries. As of 2019, Airbus is the world's largest airliner manufacturer. The company's main civil aeroplane business is conducted through the French company Airbus S.A.S., based in Blagnac, a suburb of Toulouse, with production and manufacturing facilities mostly in the European Union and the United Kingdom but also in China, the United States and Canada. Final assembly production is based in Toulouse, France; Hamburg, Germany; Seville, Spain; Tia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C919
The Comac C919 is a narrow-body airliner developed by Chinese aircraft manufacturer Comac. The development program was launched in 2008. Production of the prototype began in December 2011, with the first prototype being ready on 2 November 2015 and having its maiden flight on 5 May 2017. The aircraft received its airworthiness certification from the Civil Aviation Administration of China on 29 September 2022 and the first operational airframe intended for commercial service was delivered to launch customer China Eastern Airlines on 9 December 2022 in Shanghai. The aircraft, primarily constructed with aluminium alloys, is to be powered by either CFM International LEAP or ACAE CJ-1000A turbofan engines, and be able to carry 156 to 168 passengers in a normal operating configuration up to 5,555 km (3000 nmi). Naming In the model number, the ''C'' stands for "Comac". The ''C'' also has the implication that forms an "ABC" parallel situation with Airbus and Boeing. Developmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commercial Aircraft Corporation Of China
, type = State-owned limited company , industry = Aviation , founded = , founder = , location_city = Pudong, Shanghai , location_country = China , area_served = Worldwide , products = Commercial airliners , services = , key_people = He Dongfeng (Chairman)Zhao Yuerang (President) , revenue = , operating_income = , net_income = , assets = , equity = , owner = SASAC , num_employees = , subsid = , homepage www.comac.cc, footnotes = The Commercial Aircraft Corporation of China, Ltd. (COMAC, ) is a Chinese state-owned aerospace manufacturer established on 11 May 2008 in Shanghai. The headquarters are in Pudong, Shanghai. The company has a registered capital of RMB 19 billion ( as of May 2008). The corporation is a designer and constructor of large passenger aircraft with capacities of over 150 passengers. The first jet to be marketed is the ARJ21 developed by China Aviation Industry Corporation I, which will be followed by the C919, which made its ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
747-400
The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747. The "Advanced Series 300" was announced at the September 1984 Farnborough Airshow, targeting a 10% cost reduction with more efficient engines and of additional range. Northwest Airlines (NWA) became the first customer with an order for 10 aircraft on October 22, 1985. The first 747-400 was rolled out on January 26, 1988, and made its maiden flight on April 29, 1988. Type certification was received on January 9, 1989, and it entered service with NWA on February 9, 1989. It retains the 747 airframe, including the 747-300 stretched upper deck, with winglets. The 747-400 offers a choice of improved turbofans: the Pratt & Whitney PW4000, General Electric CF6-80C2 or Rolls-Royce RB211-524G/H. Its two-crew glass cockpit dispenses with the need for a flight engineer. It typically accommodates 416 passengers in a three-class layout ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3D-printed
3D printing or additive manufacturing is the construction of a three-dimensional object from a CAD model or a digital 3D model. It can be done in a variety of processes in which material is deposited, joined or solidified under computer control, with material being added together (such as plastics, liquids or powder grains being fused), typically layer by layer. In the 1980s, 3D printing techniques were considered suitable only for the production of functional or aesthetic prototypes, and a more appropriate term for it at the time was rapid prototyping. , the precision, repeatability, and material range of 3D printing have increased to the point that some 3D printing processes are considered viable as an industrial-production technology, whereby the term ''additive manufacturing'' can be used synonymously with ''3D printing''. One of the key advantages of 3D printing is the ability to produce very complex shapes or geometries that would be otherwise impossible to construct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venturi Effect
The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe. The Venturi effect is named after its discoverer, the 18th century Italian physicist, Giovanni Battista Venturi. Background In inviscid fluid dynamics, an incompressible fluid's velocity must ''increase'' as it passes through a constriction in accord with the principle of mass continuity, while its static pressure must ''decrease'' in accord with the principle of conservation of mechanical energy (Bernoulli's principle). Thus, any gain in kinetic energy a fluid may attain by its increased velocity through a constriction is balanced by a drop in pressure. By measuring pressure, the flow rate can be determined, as in various flow measurement devices such as Venturi meters, Venturi nozzles and orifice plates. Referring to the adjacent diagram, using Bernoulli's equation in the special case of steady, incompressible, inviscid flows (such as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspirator (pump)
A vacuum ejector, or simply ejector is a type of vacuum pump, which produces vacuum by means of the Venturi effect. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area. The fluid leaving the jet is flowing at a high velocity which due to Bernoulli's principle results in it having low pressure, thus generating a vacuum. The outer tube then narrows into a mixing section where the high velocity working fluid mixes with the fluid that is drawn in by the vacuum, imparting enough velocity for it to be ejected, the tube then typically expands in order to decrease the velocity of the ejected stream, allowing the pressure to smoothly increase to the external pressure. The strength of the vacuum produced depends on the velocity and shape of the fluid jet and the shape of the constriction and mixing sections, but if a liquid is used as the working fluid the strength of the vacuum produced is l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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