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Mig-3
The Mikoyan-Gurevich MiG-3 () is a Soviet fighter- interceptor used during World War II. It was a development of the MiG-1 by the OKO (opytno-konstruktorskij otdel — Experimental Design Department) of Zavod (Factory) No. 1 in Moscow to remedy problems found during the MiG-1's development and operations. It replaced the MiG-1 on the production line at Factory No. 1 on 20 December 1940 and was built in large numbers during 1941 before Factory No. 1 was converted to build the Ilyushin Il-2. On 22 June 1941, at the beginning of Operation Barbarossa, some 981 were in service with the Soviet Air Forces (VVS), the Soviet Air Defence Forces (PVO) and Soviet Naval Aviation. The MiG-3 was difficult to fly in peacetime and much more so in combat. Originally designed as a high-altitude fighter-interceptor, combat over the Eastern Front was generally at lower altitudes, where it was inferior to the German Messerschmitt Bf 109 as well as most of its Soviet contemporaries. It was also ... [...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] |
Artem Mikoyan
Artem (Artyom) Ivanovich Mikoyan (; ; – 9 December 1970) was a Soviet Armenian aircraft designer, who cofounded the Mikoyan-Gurevich design bureau along with Mikhail Gurevich. Early life and career Mikoyan was born in the village of Sanahin in Armenian family, then part of the Tiflis Governorate of the Russian Empire (today part of Alaverdi in Armenia's Lori Province) on 5 August 1905. His older brother, Anastas Mikoyan, would become official head of state of the Soviet Union. He completed his basic education and took a job as a machine-tool operator in Rostov, then worked in the "Dynamo" factory in Moscow before being conscripted into the military. After military service he joined the Zhukovsky Air Force Academy, where he created his first plane, graduating in 1936. He worked with Polikarpov before being named head of a new aircraft design bureau in Moscow in December 1939. Together with Mikhail Gurevich, Mikoyan formed the Mikoyan-Gurevich design bureau, producing a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supermarine Spitfire (early Merlin Powered Variants)
Supermarine Spitfire variants powered by early model Rolls-Royce Merlin engines mostly utilised single-speed, single-stage superchargers. The British Supermarine Spitfire was the only Allies of World War II, Allied fighter aircraft of the World War II, Second World War to fight in front line service from the beginnings of the conflict, in September 1939, through to the end in August 1945. Post-war, the Spitfire's service career continued into the 1950s. The basic airframe proved to be extremely adaptable, capable of taking far more powerful engines and far greater loads than its original role as a short-range Interceptor aircraft, interceptor had called for. This would lead to 19 ''marks'' of Spitfire and 52 sub-variants being produced throughout the Second World War, and beyond. The many changes were made in order to fulfil Royal Air Force requirements and to successfully engage in combat with ever-improving enemy aircraft. With the death of the original designer, R. J. Mitch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oil Pressure
Oil pressure is an important factor in the longevity of most internal combustion engines.{{Cite web , last=McTaggart , first=Megan , date=2021-02-25 , title=What Causes Low Oil Pressure (& How To Fix It) , url=https://www.lubezone.com/blog/what-causes-low-oil-pressure/ , access-date=2024-10-15 , website=LubeZone , language=en-US With a forced lubrication system (invented by Frederick Lanchester), oil is picked up by a positive displacement oil pump and forced through oil galleries (passageways) into bearings, such as the main bearings, big end bearings and camshaft bearings or balance shaft bearings. Other components such as cam lobes and cylinder walls are lubricated by oil jets. Sufficient oil pressure ensures that the metal of the rotating shaft (journal) and the bearing shell can never touch, and wear is therefore confined to initial start-up and shutdown. The oil pressure, combined with the rotation of the shaft, also hydrodynamically centers the journal in its shell and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parachute
A parachute is a device designed to slow an object's descent through an atmosphere by creating Drag (physics), drag or aerodynamic Lift (force), lift. It is primarily used to safely support people exiting aircraft at height, but also serves various purposes like slowing cargo, aiding in space capsule recovery, and stabilizing vehicles or objects. Modern parachutes are typically made from durable fabrics like nylon and come in various shapes, such as dome-shaped, rectangular, and inverted domes, depending on their specific function. The concept of the parachute dates back to ancient attempts at flight. In 852 AD, Armen Firman, in Córdoba, Spain, made the first recorded jump with a large cloak to slow his fall. Renaissance figures like Francesco di Giorgio Martini and Leonardo da Vinci later sketched designs resembling modern parachutes, but it wasn’t until the 18th century that the first successful jumps occurred. French Louis-Sébastien Lenormand made the first public jump i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithuania
Lithuania, officially the Republic of Lithuania, is a country in the Baltic region of Europe. It is one of three Baltic states and lies on the eastern shore of the Baltic Sea, bordered by Latvia to the north, Belarus to the east and south, Poland to the south, and the Russian exclave, semi-exclave of Kaliningrad Oblast to the southwest, with a Maritime boundary, maritime border with Sweden to the west. Lithuania covers an area of , with a population of 2.89 million. Its capital and largest city is Vilnius; other major cities include Kaunas, Klaipėda, Šiauliai and Panevėžys. Lithuanians who are the titular nation and form the majority of the country's population, belong to the ethnolinguistic group of Balts and speak Lithuanian language, Lithuanian. For millennia, the southeastern shores of the Baltic Sea were inhabited by various Balts, Baltic tribes. In the 1230s, Lithuanian lands were united for the first time by Mindaugas, who formed the Kingdom of Lithuania on 6 July ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaunas
Kaunas (; ) is the second-largest city in Lithuania after Vilnius, the fourth largest List of cities in the Baltic states by population, city in the Baltic States and an important centre of Lithuanian economic, academic, and cultural life. Kaunas was the largest city and the centre of a in the Duchy of Trakai of the Grand Duchy of Lithuania and Trakai Voivodeship, Trakai Palatinate since 1413. In the Russian Empire, it was the capital of the Kovno Governorate, Kaunas Governorate from 1843 to 1915. During the interwar period, it served as the temporary capital of Lithuania, when Vilnius was Polish–Lithuanian War, seized and controlled by Second Polish Republic, Poland between 1920 and 1939. During that period Kaunas was celebrated for its rich cultural and academic life, fashion, construction of countless Art Deco and Lithuanian National Revival architectural-style buildings as well as popular furniture, interior design of the time, and a widespread café culture. The city in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spin (flight)
In flight dynamics a spin is a special category of stall resulting in autorotation (uncommanded roll) about the aircraft's longitudinal axis and a shallow, rotating, downward path approximately centred on a vertical axis. Spins can be entered intentionally or unintentionally, from any flight attitude if the aircraft has sufficient yaw while at the stall point. In a normal spin, the wing on the inside of the turn stalls while the outside wing remains flying. It is possible for both wings to stall, but the angle of attack of each wing, and consequently its lift and drag, are different. Either situation causes the aircraft to autorotate toward the stalled wing due to its higher drag and loss of lift. Spins are characterized by high angle of attack, an airspeed below the stall on at least one wing and a shallow descent. Recovery and avoiding a crash may require a specific and counter-intuitive set of actions. A spin differs from a spiral dive, in which neither wing is stalled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stall (flight)
In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack exceeds its critical value.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', p. 486. Aviation Supplies & Academics, 1997. The critical angle of attack is typically about 15°, but it may vary significantly depending on the fluid, foil – including its shape, size, and finish – and Reynolds number. Stalls in fixed-wing aircraft are often experienced as a sudden reduction in lift. It may be caused either by the pilot increasing the wing's angle of attack or by a decrease in the critical angle of attack. The former may be due to slowing down (below stall speed), the latter by accretion of ice on the wings (especially if the ice is rough). A stall does not mean that the engine(s) have stopped working, or that the aircraft has stopped moving—the effect is the same even in an unpowered glider aircraft. Vectored thrust in aircraft is used to maintain alti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USSR State Prize
The USSR State Prize () was one of the Soviet Union’s highest civilian honours, awarded from its establishment in September 1966 until the dissolution of the USSR in 1991. It recognised outstanding contributions in the fields of science, mathematics, literature, the arts, and architecture. History State Stalin Prize (1941–1956) The award traces its origins to the State Stalin Prize (), commonly known as the Stalin Prize, which was established in 1941. It honoured achievements in science, technology, literature, and the arts deemed vital to the Soviet war effort and postwar reconstruction.Volkov, Solomon; Bouis, Antonina W., trans. 2004. ''Shostakovich and Stalin: The Extraordinary Relationship Between the Great Composer and the Brutal Dictator''. New York: Alfred A. Knopf. ISBN 0-375-41082-1. Ceremonies were suspended during 1944–45 and then held twice in 1946 (January for works from 1943–44; June for 1945 works). USSR State Prize (1966–1991) By 1966, the Stalin Prize h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specific Fuel Consumption (thrust)
Thrust-specific fuel consumption (TSFC) is the fuel efficiency of an engine design with respect to thrust output. TSFC may also be thought of as fuel consumption (grams/second) per unit of thrust (newtons, or N), hence ''thrust-specific''. This figure is inversely proportional to specific impulse, which is the amount of thrust produced per unit fuel consumed. TSFC or SFC for thrust engines (e.g. turbojets, turbofans, ramjets, rockets, etc.) is the mass of fuel needed to provide the net thrust for a given period e.g. lb/(h·lbf) (pounds of fuel per hour-pound of thrust) or g/(s·kN) (grams of fuel per second-kilonewton). Mass of fuel is used, rather than volume (gallons or litres) for the fuel measure, since it is independent of temperature. Specific fuel consumption of air-breathing jet engines at their maximum efficiency is more or less proportional to exhaust speed. The fuel consumption ''per mile'' or ''per kilometre'' is a more appropriate comparison for aircraft that travel a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RS-82 Rocket
RS-82 and RS-132 (Russian: Реактивный Снаряд, ''Reaktivny Snaryad''; rocket-powered projectile) were unguided rockets used by Soviet military during World War II. Development Design work on RS-82 and RS-132 rockets began in the late 1920s, by the Gas Dynamics Laboratory (GDL) led by Georgy Langemak, and including Nikolai Tikhomirov, Vladimir Artemiev, Boris Petropavlovsky, Yuriy Pobedonostsev, and others. The 82 mm (3.2 in) and 132 mm (5.2 in) diameters were chosen because the standard smokeless gunpowder charge used at the time was 24 mm (0.94 in) in diameter and seven of these charges fitted into an 82 mm cylinder. The first test-firing of a solid fuel rocket was carried out in March 1928, which flew for about 1,300 meters and in 1932 in-air test firings of RS-82 missiles from an Tupolev I-4 aircraft armed with six launchers successfully took place. In 1933 GDL became part of the Reactive Scientific Research Institute, where de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
