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Trapezoidal Wing
In aeronautics, a trapezoidal wing is a straight-edged and tapered wing planform. It may have any aspect ratio and may or may not be swept.G. Dimitriadis; ''Aircraft Design'Lecture 2: Aerodynamics Université de Liège. (retrieved 30 November 2015) The thin, unswept, short-span, low-aspect-ratio trapezoidal configuration offers some advantages for high-speed flight and has been used on a small number of aircraft types. In this wing configuration, the leading edge sweeps back and the trailing edge sweeps forward.Gunston, Bill. ''Jane's Aerospace Dictionary''. London, England. Jane's Publishing Company Ltd, 1980. , Page 436. It can provide low aerodynamic drag at high speeds, while maintaining high strength and stiffness. It was used successfully during the early days of supersonic aircraft. Design principles Any wing with straight leading and trailing edges and with differing root and tip chords is a trapezoid, whether or not it is swept.Tom Benson''Wing Area'' NASA (retrieved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Wing Tapered
A wing is a type of fin that produces both Lift (force), lift and drag while moving through air. Wings are defined by two shape characteristics, an airfoil section and a planform (aeronautics), planform. Wing efficiency is expressed as lift-to-drag ratio, which compares the benefit of lift with the air resistance of a given wing shape, as it flies. Aerodynamics is the study of wing performance in air. Equivalent Foil (fluid mechanics), foils that move through water are found on Hydrofoil, hydrofoil power vessels and Sailing hydrofoil, foiling sailboats that lift out of the water at speed and on submarines that use diving planes to point the boat upwards or downwards, while running submerged. Hydrodynamics is the study of foil performance in water. Etymology and usage The word "wing" from the Old Norse ''vængr'' for many centuries referred mainly to the foremost limb (anatomy), limbs of birds (in addition to the architectural aisle). But in recent centuries the word's meaning ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Douglas X-3 Line Drawing
Douglas may refer to: People * Douglas (given name) * Douglas (surname) Animals * Douglas (parrot), macaw that starred as the parrot ''Rosalinda'' in Pippi Longstocking * Douglas the camel, a camel in the Confederate Army in the American Civil War Businesses * Douglas Aircraft Company * Douglas (cosmetics), German cosmetics retail chain in Europe * Douglas Holding, former German company * Douglas (motorcycles), British motorcycle manufacturer Peerage and Baronetage * Duke of Douglas * Earl of Douglas, or any holder of the title * Marquess of Douglas, or any holder of the title * Douglas baronets Peoples * Clan Douglas, a Scottish kindred * Dougla people, West Indians of both African and East Indian heritage Places Australia * Douglas, Queensland, a suburb of Townsville * Douglas, Queensland (Toowoomba Region), a locality * Port Douglas, North Queensland, Australia * Shire of Douglas, in northern Queensland Canada * Douglas, New Brunswick * Douglas Parish, New Brunswick * Dou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Sweep Theory
A swept wing is a wing angled either backward or occasionally forward from its root rather than perpendicular to the fuselage. Swept wings have been flown since the pioneer days of aviation. Wing sweep at high speeds was first investigated in Germany as early as 1935 by Albert Betz and Adolph Busemann, finding application just before the end of the Second World War. It has the effect of delaying the shock waves and accompanying aerodynamic drag rise caused by fluid compressibility near the speed of sound, improving performance. Swept wings are therefore almost always used on jet aircraft designed to fly at these speeds. The term "swept wing" is normally used to mean "swept back", but variants include forward sweep, variable sweep wings and oblique wings in which one side sweeps forward and the other back. The delta wing is also aerodynamically a form of swept wing. Reasons for sweep There are three main reasons for sweeping a wing: 1. to arrange the center of gravity of the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Lockheed CL-1200
The Lockheed CL-1200 Lancer was a late 1960s company-funded proposal for a fighter aircraft based on the Lockheed F-104 Starfighter. The CL-1200 was conceived and marketed mainly for and to non-US military services, as an export product. As such it would have competed with combat-proven designs like the Dassault Mirage III, McDonnell Douglas F-4 Phantom II, Mikoyan-Gurevich MiG-21, and Northrop F-5E Tiger II. The CL-1200 competed unsuccessfully against proposed fourth generation designs, under the US government's Lightweight Fighter program, which would eventually result in the General Dynamics F-16 and Northrop F-17 Cobra (precursor of the McDonnell Douglas F/A-18). Lockheed sought to capitalize on its F-104 production experience, and commonality of parts and systems. It could minimize expenses by reusing tooling, jigs and existing facilities. Lockheed was also experienced in consortium production and further hoped to continue this arrangement with the CL-1200. It was projec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Lockheed X-7
The Lockheed X-7 (dubbed the "Flying Stove Pipe") is an American unmanned test bed of the 1950s for ramjet engines and missile guidance technology. It was the basis for the later Lockheed AQM-60 Kingfisher, a system used to test American air defenses against nuclear missile attack. Early development Development of the Kingfisher was first initiated in December 1946. The X-7 was called into production by the United States Air Force requirement for the development of an unmanned ramjet test plane with a top speed of at least . The X-7 project was developed under the AMC designator MX-883 and was given in the Lockheed in-house designation L-171. The L-171 was initially designated the PTV-A-1 by the USAF but was later designated the X-7 in 1951. Despite its first launch being a failure, after re-development of the original ramjet, following test flights were successful. A total of 130 X-7 flights were conducted from April 1951 to July 1960. Purpose The X-7 laid the foundation for t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Lockheed F-104 Starfighter 3-view
Lockheed (originally spelled Loughead) may refer to: Brands and enterprises * Lockheed Corporation, a former American aircraft manufacturer * Lockheed Martin, formed in 1995 by the merger of Lockheed Corporation and Martin Marietta ** Lockheed Martin Aeronautics ** Lockheed Martin Space Systems * Lockheed Shipbuilding and Construction Company People * Flora Haines Loughead (1855-1943), American writer, farmer, miner * The brothers who founded the original Lockheed Corporation: ** Allan Loughead (1889–1969), American aviation pioneer ** Malcolm Loughead, American aviation pioneer Other uses * Lockheed (comics), a Marvel Comics character * Lockheed Martin Transit Center, in Sunnyvale, California See also * Lochhead, a surname * Lougheed (other), Lougheed, a surname {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Supersonic Transport
The ogive.html" ;"title="Concorde supersonic transport had an ogive">ogival delta wing, a slender fuselage and four underslung Rolls-Royce/Snecma Olympus 593 engines. file:Tu-144.jpg, The Tupolev Tu-144 was the first SST to enter service and the first to leave it. Only 55 passenger flights were carried out before service ended due to safety concerns. A small number of cargo and test flights were also carried out after its retirement. A supersonic transport (SST) or a supersonic airliner is a Civil aviation, civilian supersonic aircraft designed to transport passengers at speeds greater than the speed of sound in terms of air speed. To date, the only SSTs to see regular service have been Concorde and the Tupolev Tu-144. The last passenger flight of the Tu-144 was in June 1978 and it was last flown in 1999 by NASA. Concorde's last commercial flight was in October 2003, with a November 26, 2003 ferry flight being its last flight. Following the termination of flying by Concorde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Lockheed CL-400 Suntan
Suntan was the code-name of a prototype reconnaissance aircraft program, with the goal of creating a much faster and higher-altitude successor to the U-2, enabled by the use of liquid hydrogen (LH2) as aircraft fuel. The program was cancelled in 1958. Starting in 1956, the United States Air Force funded a highly secretive program of research and development on high-speed aircraft for long-range reconnaissance. Lockheed's Skunk Works was the natural partner for this work, having successfully delivered the U-2 and having all the required secrecy and security arrangements to keep the program secret. Lockheed settled on the CL-400 design, which looked like a greatly scaled-up Lockheed F-104 Starfighter. The main change to the layout was the twin engines, mounted on the wing tips. This was done to ensure that the liquid hydrogen, which was stored in the fuselage, would have to pass through the aircraft's hot wings (up to 436 Kelvin) to reach the engines; a vacuum sealed, insulated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
North American X-15
The North American X-15 is a Hypersonic speed, hypersonic rocket-powered aircraft which was operated by the United States Air Force and the National Aeronautics and Space Administration (NASA) as part of the List of X-planes, X-plane series of experimental aircraft. The X-15 set speed and altitude records in the 1960s, crossing the Kármán line, edge of outer space and returning with valuable data used in aircraft and spacecraft design. The X-15's highest speed, , X-15 Flight 188, was achieved on 3October 1967, when William J. Knight flew at Mach number, Mach6.7 at an altitude of , or 19.34miles. This set the Flight airspeed record, official world record for the highest speed ever recorded by a crewed, powered aircraft, which remains unbroken. During the X-15 program, 12pilots flew a combined 199flights. Of these, 8pilots flew a combined 13flights which met the Air Force human spaceflight, spaceflight criterion by exceeding the altitude of , thus qualifying these pilots as bei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
German Air Force
The German Air Force (, ) is the aerial warfare branch of the , the armed forces of Germany. The German Air Force (as part of the ) was founded in 1956 during the era of the Cold War as the aerial warfare branch of the armed forces of West Germany. After the reunification of West and East Germany in 1990, it integrated parts of the air force of the former German Democratic Republic, which itself had been founded in 1956 as part of the National People's Army. There is no organizational continuity between the current Luftwaffe of the Bundeswehr and the former Luftwaffe of the Wehrmacht founded in 1935, which was completely disbanded in 1945/46 after World War II. The term that is used for both the historic and the current German air force is the German-language generic designation of any air force. The commander of the German Air Force is Lieutenant General Ingo Gerhartz. As of 2015, the German Air Force uses eleven air bases, two of which host no flying units. Furthermore, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Lockheed F-104 Starfighter
The Lockheed F-104 Starfighter is an American single-engine, supersonic interceptor. Created as a day fighter by Lockheed as one of the " Century Series" of fighter aircraft for the United States Air Force (USAF), it was developed into an all-weather multirole aircraft in the early 1960s and extensively deployed as a fighter-bomber during the Cold War. It was also produced under license by other nations and saw widespread service outside the United States. After interviews with Korean War fighter pilots in 1951, Lockheed lead designer Kelly Johnson chose to buck the trend of ever-larger and more complex fighters to produce a simple, lightweight aircraft with maximum altitude and climb performance. On 4 March 1954, the Lockheed XF-104 took to the skies for the first time, and on 26 February 1958, the production fighter was activated by the USAF. Just a few months later, it was pressed into action during the Second Taiwan Strait Crisis to deter the use of Chinese MiG-15 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
List Of X-planes
The X-planes are a series of experimental United States aircraft and rockets, used to test and evaluate new technologies and aerodynamic concepts. They have an X designator within the US system of aircraft designations, which denotes the experimental research mission. Not all US experimental aircraft have been designated as X-planes; some received US Navy designations before 1962, while others have been known only by manufacturers' designations, non-'X'-series designations, or classified codenames. This list only includes the designated X-planes. History The X-planes concept officially came into being in 1944, as a joint programme involving the National Advisory Committee for Aeronautics (NACA), the US Navy (USN) and the US Army Air Forces (USAAF), in order to pursue research into high-speed aircraft.Miller 1983, p.9. NACA later became the National Aeronautics and Space Administration (NASA) and the USAAF became the United States Air Force (USAF). Other organizations such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
