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Wingtip Device
Wingtip devices are intended to improve the efficiency of fixed-wing aircraft by reducing drag (physics), drag. Although there are several types of wing tip devices which function in different manners, their intended effect is always to reduce an aircraft's drag. Such devices reduce drag by increasing the height of the lifting system, without greatly increasing the wingspan. Extending the span would reduce lift-induced drag, but would increase parasitic drag and would require boosting the strength and weight of the wing. At some point, there is no net benefit from further increased span. There may also be operational considerations that limit the allowable wingspan (e.g. available width at Gate (airport), airport gates). Physics When a conventional wing generates lift, it also experiences lift-induced drag. Higher pressure air under the wing flows to the lower pressure surface on top at the wingtip, which results in a vortex caused by the forward motion of the aircraft. Eri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airbus A350-941 F-WWCF MSN002 Blended Winglet ILA Berlin 2016 08
Airbus SE ( ; ; ; ) is a Pan-European aerospace corporation. The company's primary business is the design and manufacturing of commercial aircraft but it also has separate defence and space and helicopter divisions. Airbus has long been the world's leading helicopter manufacturer and, in 2019, also emerged as the world's biggest manufacturer of airliners. The company was incorporated as the European Aeronautic Defence and Space Company (EADS) in the year 2000 through the merger of the French Aérospatiale-Matra, the German DASA and Spanish CASA. The new entity subsequently acquired full ownership of its subsidiary, ''Airbus Industrie GIE'', a joint venture of European aerospace companies originally incorporated in 1970 to develop and produce a wide-body aircraft to compete with American-built airliners. EADS rebranded itself as ''Airbus SE'' in 2015. Reflecting its multinational origin, the company operates major offices and assembly plants in France, Germany, Spain, and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederick W
Frederick may refer to: People * Frederick (given name), the name Given name Nobility = Anhalt-Harzgerode = * Frederick, Prince of Anhalt-Harzgerode (1613–1670) = Austria = * Frederick I, Duke of Austria (Babenberg), Duke of Austria from 1195 to 1198 * Frederick II, Duke of Austria (1219–1246), last Duke of Austria from the Babenberg dynasty * Frederick the Fair (Frederick I of Austria (Habsburg), 1286–1330), Duke of Austria and King of the Romans = Baden = * Frederick I, Grand Duke of Baden (1826–1907), Grand Duke of Baden * Frederick II, Grand Duke of Baden (1857–1928), Grand Duke of Baden = Bohemia = * Frederick, Duke of Bohemia (died 1189), Duke of Olomouc and Bohemia = Britain = * Frederick, Prince of Wales (1707–1751), eldest son of King George II of Great Britain = Brandenburg/Prussia = * Frederick I, Elector of Brandenburg (1371–1440), also known as Frederick VI, Burgrave of Nuremberg * Frederick II, Elector of Brandenburg (1413–1470), Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winglet With Attached Tufts Of An KC-135A
Wingtip devices are intended to improve the efficiency of fixed-wing aircraft by reducing drag (physics), drag. Although there are several types of wing tip devices which function in different manners, their intended effect is always to reduce an aircraft's drag. Such devices reduce drag by increasing the height of the lifting system, without greatly increasing the wingspan. Extending the span would reduce lift-induced drag, but would increase parasitic drag and would require boosting the strength and weight of the wing. At some point, there is no net benefit from further increased span. There may also be operational considerations that limit the allowable wingspan (e.g. available width at Gate (airport), airport gates). Physics When a conventional wing generates lift, it also experiences lift-induced drag. Higher pressure air under the wing flows to the lower pressure surface on top at the wingtip, which results in a vortex caused by the forward motion of the aircraft. Eri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V-E Day
Victory in Europe Day is the day celebrating the formal acceptance by the Allies of World War II of Germany's unconditional surrender of its armed forces on Tuesday, 8 May 1945; it marked the official surrender of all German military operations. Most former Soviet countries, and some others, celebrate on 9 May, as Germany's unconditional surrender entered into force at 23:01 on 8 May Central European Summer Time; this corresponded with 00:01 on 9 May in Moscow Time. Several countries observe public holidays on the day each year, also called Victory Over Fascism Day, Liberation Day, or Victory Day. In the UK, it is often abbreviated to VE Day, a term which existed as early as September 1944, in anticipation of victory. History Adolf Hitler, the Nazi leader, had committed suicide on 30 April during the Battle of Berlin, and Germany's surrender was authorised by his successor, '' Reichspräsident'' Karl Dönitz. The administration headed by Dönitz was known as the Flensb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dihedral (aeronautics)
Dihedral angle is the upward angle from horizontal of the wings or tailplane of a fixed-wing aircraft. "Anhedral angle" is the name given to negative dihedral angle, that is, when there is a ''downward'' angle from horizontal of the wings or tailplane of a fixed-wing aircraft. Dihedral angle has a strong influence on dihedral effect, which is named after it. Dihedral effect is the amount of roll moment produced in proportion to the amount of sideslip. Dihedral effect is a critical factor in the stability of an aircraft about the roll axis (the spiral mode). It is also pertinent to the nature of an aircraft's Dutch roll oscillation and to maneuverability about the roll axis. Longitudinal dihedral is a comparatively obscure term related to the pitch axis of an airplane. It is the angle between the zero-lift axis of the wing and the zero-lift axis of the horizontal tail. Longitudinal dihedral can influence the nature of controllability about the pitch axis and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch Roll
Dutch roll is an aircraft motion consisting of an out-of- phase combination of "tail-wagging" (yaw) and rocking from side to side (roll). This yaw-roll coupling is one of the basic flight dynamic modes (others include phugoid, short period, and spiral divergence). This mode resembles the motion of a skier who is simultaneously yawing and rolling from side to side. This motion is normally well damped in most light aircraft, though some aircraft with well-damped Dutch roll modes can experience a degradation in damping as airspeed decreases and altitude increases. Dutch roll stability can be artificially increased by the installation of a yaw damper. Wings placed well above the center of gravity, swept wings, and dihedral wings tend to increase the roll restoring force, and therefore increase the Dutch roll tendencies; this is why high-winged aircraft often are slightly anhedral, and transport-category swept-wing aircraft are equipped with yaw dampers. A similar phenomenon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light Fighter
A light fighter or lightweight fighter is a fighter aircraft towards the low end of the practical range of weight, cost, and complexity over which fighters are fielded. The light or lightweight fighter retains carefully selected competitive features, in order to provide cost-effective design and performance. A well-designed lightweight fighter is able to match or better a heavier type plane-for-plane in many missions, and for lower cost. The lightweight class can therefore be strategically valuable. In attempts to scale this efficiency to still lower cost, some manufacturers have in recent years adopted the term “light fighter” to also refer to light primarily air-to-ground attack aircraft, some of which are modified trainer designs. These lower cost lightweight attack aircraft have become known as light combat aircraft (LCAs), and are sometimes considered to include some multirole light fighters. From 1926 the light fighter concept has been a regular thread in the develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinkel He 162
Heinkel Flugzeugwerke () was a German aircraft manufacturing company founded by and named after Ernst Heinkel. It is noted for producing bomber aircraft for the Luftwaffe in World War II and for important contributions to high-speed flight, with the pioneering examples of a successful liquid-fueled rocket and a turbojet-powered aircraft in aviation history, with both Heinkel designs' first flights occurring shortly before the outbreak of World War II in Europe. History Following the successful career of Ernst Heinkel as the chief designer for the Hansa-Brandenburg aviation firm in World War I, Heinkel's own firm was established at Warnemünde in 1922, after the restrictions on German aviation imposed by the Treaty of Versailles were relaxed. By 1929, the firm's compressed air-powered catapults were in use on the German Norddeutscher Lloyd ocean-liners and to launch short-range mail planes from the liners' decks. The company's first post-World War I aircraft design su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Lippisch
Alexander Martin Lippisch (2 November 1894 – 11 February 1976) was a German aeronautical engineer, a pioneer of aerodynamics who made important contributions to the understanding of tailless aircraft, delta wings and the ground effect in aircraft, ground effect, and also worked in the U.S. Within the Opel-RAK program, he was the designer of the world's first rocket-powered glider. He developed and conceptualized delta wing designs which functioned practically in supersonic delta wing fighter aircraft as well as in hang gliders. People he worked with continued the development of the delta wing and supersonic flight concepts over the 20th century. His most famous designs are the Messerschmitt Me 163 rocket-powered interceptorHanna Reitsch, Reitsch, H., 1955The Sky My Kingdom London: Biddles Limited, Guildford and King's Lynn, and the Dornier Aerodyne. Early life Lippisch was born in Munich, Kingdom of Bavaria. He later recalled that his interest in aviation began with a demonst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Messerschmitt Me 163
The Messerschmitt Me 163 Komet is a rocket-powered interceptor aircraft primarily designed and produced by the German aircraft manufacturer Messerschmitt. It is the only operational rocket-powered fighter aircraft in history as well as the first piloted aircraft of any type to exceed in level flight. Development of what would become the Me 163 can be traced back to 1937 and the work of the German aeronautical engineer Alexander Lippisch and the '' Deutsche Forschungsanstalt für Segelflug'' (DFS). Initially an experimental programme that drew upon traditional glider designs while integrating various new innovations such as the rocket engine, the development ran into organisational issues until Lippisch and his team were transferred to Messerschmitt in January 1939. Plans for a propeller-powered intermediary aircraft were quickly dropped in favour of proceeding directly to rocket propulsion. On 1 September 1941, the prototype performed its maiden flight, quickly demon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sighard F
Sieghart or Sieghard (), sometimes Sighard or Sieghardt, anglicized as Sigehard, is a German masculine given name and surname. Notable people with the name include: Given name * Sigehard, Count in Luihgau and Hainaut (10th century) * Sigehard (patriarch of Aquileia) (died 1077) * Sieghard Brandenburg (1938–2015), German musicologist * Sieghart Dittmann (born 1934), German chess player and epidemiologist * Sieghart Döhring (born 1939), German musicologist * Sighard F. Hoerner (1906–1971), German scientist * Sieghard Knodel (born 1961), German politician * Sieghardt Rupp (1931–2015), Austrian actor Surname * Alexander Sieghart (born 1994), Thai footballer * Ingomar Sieghart (born 1943), German athlete * Mary Ann Sieghart (born 1961), English journalist, author and radio presenter * William Sieghart (born 1960), British entrepreneur, publisher and philanthropist Fictional characters * Sieghart, a major character in the video game '' Record of Agarest War Zero ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinkel He 162 CASM 2012 5 (cropped)
Heinkel Flugzeugwerke () was a German aircraft manufacturing company founded by and named after Ernst Heinkel. It is noted for producing bomber aircraft for the Luftwaffe in World War II and for important contributions to high-speed flight, with the pioneering examples of a successful liquid-fueled rocket and a turbojet-powered aircraft in aviation history, with both Heinkel designs' first flights occurring shortly before the outbreak of World War II in Europe. History Following the successful career of Ernst Heinkel as the chief designer for the Hansa-Brandenburg aviation firm in World War I, Heinkel's own firm was established at Warnemünde in 1922, after the restrictions on German aviation imposed by the Treaty of Versailles were relaxed. By 1929, the firm's compressed air-powered catapults were in use on the German Norddeutscher Lloyd ocean-liners and to launch short-range mail planes from the liners' decks. The company's first post-World War I aircraft design succes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
