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Shenyang J-15
The Shenyang J-15 (wikt:歼, Chinese: 歼-15), also known as ''Flying Shark'' (; NATO reporting name: Flanker-X2, is a Chinese night fighter, all-weather, twinjet, carrier-based aircraft, carrier-based fourth-generation fighter, fourth-generation multirole combat aircraft, multirole fighter aircraft developed by the Shenyang Aircraft Corporation (SAC) and the Shenyang Aircraft Design Institute, 601 Institute, specifically for the People's Liberation Army Naval Air Force (PLANAF) to serve on People's Liberation Army Navy's Chinese aircraft carrier programme, aircraft carriers. An unfinished prototype Su-33, the T-10K-3, was acquired by SAC from Ukraine in 2001 and was said to have been studied extensively and reverse-engineered, with development on the J-15 beginning immediately afterward. While the J-15 appears to be structurally based on the prototype of Su-33, the fighter features indigenous Chinese technologies as well as avionics from the Shenyang J-11B program. In February 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Aircraft Carrier Liaoning
''Liaoning'' (16; ) is a Chinese Type 001 aircraft carrier. The first aircraft carrier commissioned into the People's Liberation Army Navy Surface Force, she was originally classified as a training ship, intended to allow the Navy to experiment, train and gain familiarity with aircraft carrier operations. Following upgrades and additional training in late 2018, Chinese state media announced that the ship would shift to a combat role in 2019. Originally laid down in 1985 for the Soviet Navy as the aircraft carrier ''Riga'', she was launched on 4 December 1988 and renamed ''Varyag'' in 1990. After the dissolution of the Soviet Union in 1991, construction was halted and the ship was put up for sale by Ukraine. The stripped hulk was purchased in 1998 and towed to the Dalian naval shipyard in northeast China. The ship was rebuilt and commissioned into the People's Liberation Army Navy (PLAN) as ''Liaoning'' on 25 September 2012. Its Chinese ship class designation is Type 001. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reverse-engineer
Reverse engineering (also known as backwards engineering or back engineering) is a process or method through which one attempts to understand through deductive reasoning how a previously made device, process, system, or piece of software accomplishes a task with very little (if any) insight into exactly how it does so. It is essentially the process of opening up or dissecting a system to see how it works, in order to duplicate or enhance it. Depending on the system under consideration and the technologies employed, the knowledge gained during reverse engineering can help with repurposing obsolete objects, doing security analysis, or learning how something works. Although the process is specific to the object on which it is being performed, all reverse engineering processes consist of three basic steps: Information extraction, Modeling, and Review. Information extraction refers to the practice of gathering all relevant information for performing the operation. Modeling refers to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbofan Engine
The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which achieves mechanical energy from combustion, and the ''fan'', a ducted fan that uses the mechanical energy from the gas turbine to force air rearwards. Thus, whereas all the air taken in by a turbojet passes through the combustion chamber and turbines, in a turbofan some of that air bypasses these components. A turbofan thus can be thought of as a turbojet being used to drive a ducted fan, with both of these contributing to the thrust. The ratio of the mass-flow of air bypassing the engine core to the mass-flow of air passing through the core is referred to as the bypass ratio. The engine produces thrust through a combination of these two portions working together; engines that use more jet thrust relative to fan thrust are known as ''low-bypass turbofans' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saturn AL-31
The Saturn AL-31 is a family of axial flow turbofan engines, developed by the Lyulka design bureau in the Soviet Union, now NPO Saturn in Russia, originally as a 12.5-tonne (122.6 kN, 27,560 lbf) powerplant for the Sukhoi Su-27 long range air superiority fighter. The AL-31 currently powers the Su-27 family of combat aircraft and some variants of the Chengdu J-10 multirole jet fighter. Assembly of the engine is also performed under license in India. Highly improved variants power the fifth-generation Sukhoi Su-57 and Chengdu J-20. Development and design The design of the AL-31 turbofan began in the 1970s under the designation ''izdeliye'' 99The Russian term , translit. ''izdeliye'' literally means "manufactured article" or "product". by the Lyulka design bureau, also known as Lyulka-Saturn. With an emphasis on greater fuel efficiency over turbojets for longer range, the class turbofan engine was intended to power the heavy PFI (russian: link=no, ПФИ, russian: link ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maiden Flight
The maiden flight, also known as first flight, of an aircraft is the first occasion on which it leaves the ground under its own power. The same term is also used for the first launch of rockets. The maiden flight of a new aircraft type is always a historic occasion for the type and can be quite emotional for those involved. In the early days of aviation it could be dangerous, because the exact handling characteristics of the aircraft were generally unknown. The maiden flight of a new type is almost invariably flown by a highly experienced test pilot. Maiden flights are usually accompanied by a chase plane, to verify items like altitude, airspeed, and general airworthiness. A maiden flight is only one stage in the development of an aircraft type. Unless the type is a pure research aircraft (such as the X-15), the aircraft must be tested extensively to ensure that it delivers the desired performance with an acceptable margin of safety. In the case of civilian aircraft, a new ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Su-27
The Sukhoi Su-27 (russian: Сухой Су-27; NATO reporting name: Flanker) is a Soviet-origin twin-engine supermaneuverable fighter aircraft designed by Sukhoi. It was intended as a direct competitor for the large US fourth-generation jet fighters such as the Grumman F-14 Tomcat and McDonnell Douglas F-15 Eagle, with range, heavy aircraft ordnance, sophisticated avionics and high maneuverability. The Su-27 was designed for air superiority missions, and subsequent variants are able to perform almost all aerial warfare operations. It was designed with the Mikoyan MiG-29 as its complement. The Su-27 entered service with the Soviet Air Forces in 1985. The primary role was long range air defence against American SAC Rockwell B-1B Lancer and Boeing B-52G and H Stratofortress bombers, protecting the Soviet coast from aircraft carriers and flying long range fighter escort for Soviet heavy bombers such as the Tupolev Tu-95, Tupolev Tu-22M and Tupolev Tu-160. The Su-27 w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intellectual Property
Intellectual property (IP) is a category of property that includes intangible creations of the human intellect. There are many types of intellectual property, and some countries recognize more than others. The best-known types are patents, copyrights, trademarks, and trade secrets. The modern concept of intellectual property developed in England in the 17th and 18th centuries. The term "intellectual property" began to be used in the 19th century, though it was not until the late 20th century that intellectual property became commonplace in the majority of the world's legal systems."property as a common descriptor of the field probably traces to the foundation of the World Intellectual Property Organization (WIPO) by the United Nations." in Mark A. Lemley''Property, Intellectual Property, and Free Riding'', Texas Law Review, 2005, Vol. 83:1031, page 1033, footnote 4. The main purpose of intellectual property law is to encourage the creation of a wide variety of intellectual go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stockholm International Peace Research Institute
Stockholm International Peace Research Institute (SIPRI) is an international institute based in Stockholm. It was founded in 1966 and provides data, analysis and recommendations for armed conflict, military expenditure and arms trade as well as disarmament and arms control. The research is based on open sources and is directed to decision-makers, researchers, media and the interested public. SIPRI's organizational purpose is to conduct scientific research in issues on conflict and cooperation of importance for international peace and security, with the goal of contributing to an understanding for the conditions for a peaceful solution of international conflicts and sustainable peace. SIPRI was ranked among the top three non-US world-wide think tanks in 2014 by the University of Pennsylvania Lauder Institute's ''Global Go To Think Tanks Report.'' In 2020, SIPRI ranked 34th amongst think tanks globally. History In 1964, Prime Minister of Sweden Tage Erlander put forward the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sukhoi Su-27
The Sukhoi Su-27 (russian: Сухой Су-27; NATO reporting name: Flanker) is a Soviet-origin twin-engine supermaneuverable fighter aircraft designed by Sukhoi. It was intended as a direct competitor for the large US fourth-generation jet fighters such as the Grumman F-14 Tomcat and McDonnell Douglas F-15 Eagle, with range, heavy aircraft ordnance, sophisticated avionics and high maneuverability. The Su-27 was designed for air superiority missions, and subsequent variants are able to perform almost all aerial warfare operations. It was designed with the Mikoyan MiG-29 as its complement. The Su-27 entered service with the Soviet Air Forces in 1985. The primary role was long range air defence against American SAC Rockwell B-1B Lancer and Boeing B-52G and H Stratofortress bombers, protecting the Soviet coast from aircraft carriers and flying long range fighter escort for Soviet heavy bombers such as the Tupolev Tu-95, Tupolev Tu-22M and Tupolev Tu-160. The Su-27 wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shenyang FC-31
The Shenyang FC-31 Gyrfalcon ( zh, s=鹘鹰, p=Gǔ yīng), also known as the J-31 is a Chinese prototype mid-sized twinjet 5th-generation fighter aircraft developed by Shenyang Aircraft Corporation (SAC). The official nickname published by SAC is "Gyrfalcon", though it has also been referred to as the "F-60" or "J-21 Snowy Owl" () in some media reports, or "Falcon Hawk" by some military enthusiasts.China’s Newest Stealth Fighter Takes Flight - Wired.com, October 31, 2012 nomenclatures in the Chinese military are reserved for programs launched and financed by the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chengdu J-20
The Chengdu J-20 (), also known as ''Mighty Dragon'' (), is a twinjet all-weather stealth fighter aircraft developed by China's Chengdu Aerospace Corporation for the People's Liberation Army Air Force (PLAAF). The J-20 is designed as an air superiority fighter with precision strike capability. The aircraft has three variants: the initial production model J-20A, the thrust-vectoring J-20B, and twin-seat aircraft teaming capable J-20S. Descends from the J-XX program of the 1990s, the aircraft made its maiden flight on 11 January 2011, and was officially revealed at the 2016 China International Aviation & Aerospace Exhibition. The aircraft entered service in March 2017 with the first J-20 combat unit formed in February 2018, making China the second country in the world and the first in Asia to field an operational stealth aircraft. The J-20 is the world's third operational fifth-generation stealth fighter aircraft after the F-22 and F-35. Development The J-20 emerged from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fifth-generation Fighter
A fifth-generation fighter is a jet fighter aircraft classification which includes major technologies developed during the first part of the 21st century. , these are the most advanced fighters in operation. The characteristics of a fifth-generation fighter are not universally agreed upon and not every fifth-generation type necessarily has them all; however, they typically include stealth, low-probability-of-intercept radar (LPIR), agile airframes with supercruise performance, advanced avionics features, and highly integrated computer systems capable of networking with other elements within the battlespace for situation awareness and C3 (command, control and communications) capabilities.Baker 2018, pp.5, 46. , the combat-ready fifth-generation fighters are the Lockheed Martin F-22 Raptor, which entered service with the United States Air Force (USAF) in December 2005; the Lockheed Martin F-35 Lightning II, which entered service with the USAF in July 2015; the Chengdu J-20, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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