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Turbo-Union RB.199 Mk.104
The Turbo-Union RB199 is a turbofan jet engine designed and built in the early 1970s by Turbo-Union, a joint venture between Rolls-Royce, MTU and Aeritalia. The only production application was the Panavia Tornado, but it was used in the British Aerospace EAP whose 1st flight was on 8 August 1986 from Warton, without use of a spare engine on its total 259 flights, and is now in RAF Cosford Museum. It was also used in the first two Prototypes of the Eurofighter Typhoon, whose 1st flight, by DA1, was from Manching, Bavaria on 27 March 1994, and for a further two years before the EJ200 engines were installed - good reliability meant the spare RB199 engine supplied was never used. Design and development The RB199 originated with a requirement, in 1969, to power a new European multirole combat aircraft (MRCA) called the Panavia MRCA. The engine requirements to meet the Panavia MRCA specification were significant advances over current engines in thrust-to-weight ratio, fuel consu ... [...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] |
Rolls-Royce
Rolls-Royce (always hyphenated) may refer to: * Rolls-Royce Limited, a British manufacturer of cars and later aero engines, founded in 1906, now defunct Automobiles * Rolls-Royce Motor Cars, the current car manufacturing company incorporated in 1998, a subsidiary of BMW Group * Rolls-Royce Motors, owner of the former car division incorporated in 1973, bought by Vickers in 1980, a subsidiary of Volkswagen Group from 1998 to 2002 * List of Rolls-Royce motor cars Aerospace and nuclear power * Rolls-Royce Holdings Rolls-Royce Holdings plc is a British Multinational corporation, multinational aerospace and defence company incorporated in February 2011. The company owns Rolls-Royce, a business established in 1904 which today designs, manufactures and dist ... plc, an aerospace, power systems and defence company and Rolls-Royce's current principal operating company ** Rolls-Royce Controls and Data Services ** Rolls-Royce Deutschland *** Rolls-Royce Power Systems ** Rolls-Roy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurojet EJ200
The Eurojet EJ200 is a military low-bypass turbofan used as the powerplant of the Eurofighter Typhoon. The engine is largely based on the Rolls-Royce XG-40 technology demonstrator, which was developed in the 1980s. The EJ200 is built by the EuroJet Turbo GmbH consortium. The EJ200 is also used in the Bloodhound LSR supersonic land speed record attempting car. Development Rolls-Royce XG-40 Rolls-Royce began development of the XG-40 technology demonstrator engine in 1984. Development costs were met by the British government (85%) and Rolls-Royce. On 2 August 1985, Italy, West Germany and the UK agreed to go ahead with the Eurofighter. The announcement of this agreement confirmed that France had chosen not to proceed as a member of the project. One issue was French insistence that the aircraft be powered by the Snecma M88, in development at the same time as the XG-40. Eurojet EJ200 The Eurojet consortium was formed in 1986 to co-ordinate and manage the project largely b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurofighter Typhoon
The Eurofighter Typhoon is a European multinational twin-engine, supersonic, canard delta wing, multirole fighter. The Typhoon was designed originally as an air-superiority fighter and is manufactured by a consortium of Airbus, BAE Systems and Leonardo that conducts the majority of the project through a joint holding company, Eurofighter Jagdflugzeug GmbH. The NATO Eurofighter and Tornado Management Agency, representing the UK, Germany, Italy and Spain, manages the project and is the prime customer. The aircraft's development effectively began in 1983 with the Future European Fighter Aircraft programme, a multinational collaboration among the UK, Germany, France, Italy and Spain. Previously, Germany, Italy and the UK had jointly developed and deployed the Panavia Tornado combat aircraft and desired to collaborate on a new project, with additional participating EU nations. Disagreements over design authority and operational requirements however, led France to leave the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BAe EAP
The British Aerospace EAP (standing for ''Experimental Aircraft Programme'') is a British technology demonstrator aircraft developed by aviation company British Aerospace (BAe) as a private venture. It was designed to research technologies to be used for a future European combat aircraft, and for the multinational Eurofighter Typhoon. The EAP has its roots within the earlier ''Agile Combat Aircraft'' (ACA), a collaborative initiative studying advanced technologies to produce more capable fighter aircraft. Upon the announcement of the EAP during October 1983, it was intended to be a multinational European effort; however, neither West Germany nor Italy would ultimately contribute financially, thus the programme relied upon a combination of British public and British and European private funding instead. Having been manufactured in sections across multiple facilities, the sole EAP aircraft (serial ''ZF534'') was rolled out during April 1986. Performing its maiden flight on 8 Augus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Tornado F3
The Panavia Tornado Air Defence Variant (ADV) is a long-range, twin-engine swing-wing interceptor aircraft developed by the European Panavia Aircraft GmbH consortium. It was a specialised derivative of the multirole Panavia Tornado. Development of the Tornado ADV formally commenced in 1976. It was primarily intended to intercept Soviet bombers as they were traversing across the North Sea with the aim of preventing a successful air-launched nuclear attack against the United Kingdom. In this capacity, it was equipped with a powerful radar and beyond-visual-range missiles. Having been based on the multinational Tornado IDS, development was relatively quick. Originally, the programme was solely pursued by the United Kingdom. The first prototype performed its maiden flight on 27 October 1979; two further prototypes followed in the year after. The initial production model, the ''Tornado F2'', entered service with the Royal Air Force (RAF) in 1986. The Tornado F2, which was only prod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afterburner (engine)
An afterburner (or reheat in British English) is an additional combustion component used on some jet engines, mostly those on military supersonic aircraft. Its purpose is to increase thrust, usually for supersonic flight, takeoff, and combat. The afterburning process injects additional fuel into a combustor ("burner") in the jet pipe behind (i.e., "after") the turbine, "reheating" the exhaust gas. Afterburning significantly increases thrust as an alternative to using a bigger engine with its added weight penalty, but at the cost of increased fuel consumption (decreased fuel efficiency) which limits its use to short periods. This aircraft application of "reheat" contrasts with the meaning and implementation of "reheat" applicable to gas turbines driving electrical generators and which reduces fuel consumption. Jet engines are referred to as operating ''wet'' when afterburning and ''dry'' when not. An engine producing maximum thrust wet is at ''maximum power,'' while an engine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newton (unit)
The newton (symbol: N) is the unit of force in the International System of Units (SI). Expressed in terms of SI base units, it is 1 kg⋅m/s2, the force that accelerates a mass of one kilogram at one metre per second squared. The unit is named after Isaac Newton in recognition of his work on classical mechanics, specifically his second law of motion. Definition A newton is defined as 1 kg⋅m/s2 (it is a named derived unit defined in terms of the SI base units). One newton is, therefore, the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in the direction of the applied force. The units "metre per second squared" can be understood as measuring a rate of change in velocity per unit of time, i.e. an increase in velocity by one metre per second every second. In 1946, the General Conference on Weights and Measures (CGPM) Resolution 2 standardized the unit of force in the MKS system of units to be the amount need ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Saudi Air Force
The Royal Saudi Air Force (RSAF; ) is the military aviation, aviation branch of the Armed Forces of Saudi Arabia, Saudi Arabian Armed Forces. The Royal Saudi Air Force currently has wings, squadrons, and a special forces unit dedicated to combat search and rescue. The RSAF has developed from a largely defensive military force into one with an advanced offensive capability, and maintains the second largest fleet of McDonnell Douglas F-15 Eagle, F-15 Eagles after the United States Air Force, USAF. The backbone of the RSAF is currently the F-15 Eagle, with the Panavia Tornado also forming a major component. The Tornado and many other aircraft were delivered under the Al-Yamamah arms deal, Al Yamamah contracts with British Aerospace (now BAE Systems). The RSAF ordered various weapons in the 1990s, including Sea Eagle (missile), Sea Eagle anti-ship missiles, laser-guided bombs and gravity bombs. Al-Salam, a successor to the Al Yamamah agreement will see 48 Eurofighter Typhoons deli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-cycle Fatigue
In materials science, fatigue is the initiation and propagation of cracks in a material due to cyclic loading. Once a fatigue crack has initiated, it grows a small amount with each loading cycle, typically producing striations on some parts of the fracture surface. The crack will continue to grow until it reaches a critical size, which occurs when the stress intensity factor of the crack exceeds the fracture toughness of the material, producing rapid propagation and typically complete fracture of the structure. Fatigue has traditionally been associated with the failure of metal components which led to the term metal fatigue. In the nineteenth century, the sudden failing of metal railway axles was thought to be caused by the metal crystallising because of the brittle appearance of the fracture surface, but this has since been disproved. Most materials, such as composites, plastics and ceramics, seem to experience some sort of fatigue-related failure. To aid in predicting the fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Creep (deformation)
In materials science, creep (sometimes called cold flow) is the tendency of a solid material to undergo slow deformation while subject to persistent mechanical stresses. It can occur as a result of long-term exposure to high levels of stress that are still below the yield strength of the material. Creep is more severe in materials that are subjected to heat for long periods and generally increases as they near their melting point. The rate of deformation is a function of the material's properties, exposure time, exposure temperature and the applied structural load. Depending on the magnitude of the applied stress and its duration, the deformation may become so large that a component can no longer perform its function – for example creep of a turbine blade could cause the blade to contact the casing, resulting in the failure of the blade. Creep is usually of concern to engineers and metallurgists when evaluating components that operate under high stresses or high temperatures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermal Fatigue
A thermal column (or thermal) is a rising mass of buoyant air, a convective current in the atmosphere, that transfers heat energy vertically. Thermals are created by the uneven heating of Earth's surface from solar radiation, and are an example of convection, specifically atmospheric convection. Thermals on Earth The Sun warms the ground, which in turn warms the air directly above. The warm air near the surface expands, becoming less density, dense than the surrounding air. The lighter air rises and cools due to its expansion in the lower pressure at higher altitudes. It stops rising when it has cooled to the same temperature, thus density, as the surrounding air. Associated with a thermal is a downward flow surrounding the thermal column. The downward-moving exterior is caused by colder air being displaced at the top of the thermal. The size and Power (physics), strength of thermals are influenced by the properties of the lower atmosphere (the ''troposphere''). When the air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
