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Miroslav Nenadović
Miroslav Nenadović ( sr-Cyrl, Мирослав Ненадовић; 18 March 1904 – 21 February 1989) was an engineer and professor at the Faculty of Mechanical Engineering in Belgrade, a Yugoslav aerospace engineer, who gave immense contribution to the development of the faculty of Mechanical Engineering in Belgrade and the Yugoslav Air Force in general. In 1958 he was elected an associate fellow of the Serbian Academy of Sciences and Arts (SASA), while in 1965 he was elected full member of the Academy. Life He was born on 18 March 1904 in Belgrade (Serbia), where he completed both elementary school and high school. He studied Mathematical Sciences at the University of Belgrade, graduating in 1926. Upon his graduation, he continued his studies in mathematics at the Department for Mechanical and Electrical Engineering at the Faculty of Technical Engineering in Belgrade, graduating in 1932. Career After graduating from the Faculty of Engineering, the French government granted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgrade
Belgrade ( , ;, ; Names of European cities in different languages: B, names in other languages) is the Capital city, capital and List of cities in Serbia, largest city in Serbia. It is located at the confluence of the Sava and Danube rivers and the crossroads of the Pannonian Basin, Pannonian Plain and the Balkan Peninsula. Nearly 1,166,763 million people live within the administrative limits of the City of Belgrade. It is the third largest of all List of cities and towns on Danube river, cities on the Danube river. Belgrade is one of the List of oldest continuously inhabited cities, oldest continuously inhabited cities in Europe and the world. One of the most important prehistoric cultures of Europe, the Vinča culture, evolved within the Belgrade area in the 6th millennium BC. In antiquity, Thracians, Thraco-Dacians inhabited the region and, after 279 BC, Celts settled the city, naming it ''Singidunum, Singidūn''. It was Roman Serbia, conquered by the Romans under the reign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural Machine
Agricultural machinery relates to the mechanical structures and devices used in farming or other agriculture. There are many types of such equipment, from hand tools and power tools to tractors and the countless kinds of farm implements that they tow or operate. Diverse arrays of equipment are used in both organic and nonorganic farming. Especially since the advent of mechanised agriculture, agricultural machinery is an indispensable part of how the world is fed. History The Industrial Revolution With the coming of the Industrial Revolution and the development of more complicated machines, farming methods took a great leap forward. Instead of harvesting grain by hand with a sharp blade, wheeled machines cut a continuous swath. Instead of threshing the grain by beating it with sticks, threshing machines separated the seeds from the heads and stalks. The first tractors appeared in the late 19th century. Steam power Power for agricultural machinery was originally supplied by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1989 Deaths
File:1989 Events Collage.png, From left, clockwise: The Cypress Street Viaduct, Cypress structure collapses as a result of the 1989 Loma Prieta earthquake, killing motorists below; The proposal document for the World Wide Web is submitted; The Exxon Valdez oil tanker runs aground in Prince William Sound, Alaska, causing a large Exxon Valdez oil spill, oil spill; The Fall of the Berlin Wall begins the downfall of Communism in Eastern Europe, and heralds German reunification; The United States United States invasion of Panama, invades Panama to depose Manuel Noriega; The Singing Revolution led to the independence of the Baltic states of Estonia, Latvia, and Lithuania from the Soviet Union; The stands of Hillsborough Stadium in Sheffield, Yorkshire, where the Hillsborough disaster occurred; 1989 Tiananmen Square protests and massacre, Students demonstrate in Tiananmen Square, Beijing; many are killed by forces of the Chinese Communist Party., 300x300px, thumb rect 0 0 200 200 1989 Loma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1904 Births
Nineteen or 19 may refer to: * 19 (number), the natural number following 18 and preceding 20 * one of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (film), a 1987 science fiction film Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album ''63/19'' by Kool A.D. * ''Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle. * "Nineteen", a song by Bad4Good from the 1992 album '' Refugee'' * "Nineteen", a song by Karma to Burn from the 2001 album ''Almost Heathen''. * "Nineteen" (song), a 2007 song by American singer Billy Ray Cyrus. * "Nineteen", a song by Tegan and Sara from the 2007 album '' The Con''. * "XIX" (song), a 2014 song by Slipk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Tunnel
Wind tunnels are large tubes with air blowing through them which are used to replicate the interaction between air and an object flying through the air or moving along the ground. Researchers use wind tunnels to learn more about how an aircraft will fly. NASA uses wind tunnels to test scale models of aircraft and spacecraft. Some wind tunnels are large enough to contain full-size versions of vehicles. The wind tunnel moves air around an object, making it seem as if the object is flying. Most of the time, large powerful fans suck air through the tube. The object being tested is held securely inside the tunnel so that it remains stationary. The object can be an aerodynamic test object such as a cylinder or an airfoil, an individual component, a small model of the vehicle, or a full-sized vehicle. The air moving around the stationary object shows what would happen if the object was moving through the air. The motion of the air can be studied in different ways; smoke or dye can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Council Of The Aeronautical Sciences
The International Council of the Aeronautical Sciences (ICAS) is a worldwide institution, established as an international forum for individual national aeronautical professional associations. History It was formed on 29 January 1957 at a conference in the US. The first ICAS Congress was held in Spain in 1958. Frank Wattendorf, of AGARD, was the first Director. A second meeting was held in Paris, with Hugh Latimer Dryden of the National Advisory Committee for Aeronautics, and representatives from ONERA (Office National d'Etudes et de Recherches Aérospatiales), the Royal Aeronautical Society (RAeS), the WGL (now the Deutsche Gesellschaft für Luft- und Raumfahrt), the Association Française des Ingénieurs et Techniciens de l'Aéronautique (now the Association Aéronautique et Astronautique de France), and the Aeronautical Research Institute of Sweden. Congress It holds a biennial international congress in September. In 1986 it was held in London. In 2000 the congress was held i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoplane
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes. A monoplane has inherently the highest efficiency and lowest drag of any wing configuration and is the simplest to build. However, during the early years of flight, these advantages were offset by its greater weight and lower manoeuvrability, making it relatively rare until the 1930s. Since then, the monoplane has been the most common form for a fixed-wing aircraft. Characteristics Support and weight The inherent efficiency of the monoplane is best achieved in the cantilever wing, which carries all structural forces internally. However, to fly at practical speeds the wing must be made thin, which requires a heavy structure to make it strong and stiff enough. External bracing can be used to improve structural efficiency, reducing weight and cost. For a wing of a given size, the weight reduction allows it to fly slower a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rogožarski Brucoš
Rogožarski Brucoš (Serbian Cyrillic:Рогожарски Бруцош) was a single-engine, two-seat, low wing monoplane aircraft designed as a trainer in Yugoslavia before World War II. It was designed and built in the Rogožarski aircraft factory in Belgrade. Design and development In order to replace its obsolete pilot training aircraft, the Zmaj Fizir FN biplane, the Yugoslav Royal Air Force (YRAF) Command held a competition in mid-1936 to develop a new aircraft for training pilots. The new aircraft was to be a low wing aircraft so that Yugoslavian pilots could get accustomed to piloting the fighters that the Yugoslav Royal Air Force was using, the Hawker Hurricane, Messerschmitt Bf 109 and the Rogožarski IK-3. The Rogožarski Factory decided to participate in the competition and engaged two well-known aerospace engineers, Miroslav Nenadović and Mitrović Milenko-Spirta, who began working on the design. Building of the prototype started the same year, and it flew for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air-taxi
An air taxi is a small commercial aircraft that makes short flights on demand. In 2001 air taxi operations were promoted in the United States by a NASA and aerospace industry study on the potential Small Aircraft Transportation System (SATS) and the rise of light-jet aircraft manufacturing. Since 2016, air taxis have reemerged as part of the burgeoning field of eVTOL. Regulation In Canada, air taxi operations are regulated by Transport Canada under Canadian Aviation Regulation 703. The Canadian definition of air taxi includes all commercial single-engined aircraft, multi-engined helicopters flown by visual flight rules by one pilot and all multi-engined, non-turbo-jet aircraft, with a maximum take-off weight or less and nine or fewer passenger seats, that are used to transport people or goods or for sightseeing. In the US, air taxi and air charter operations are governed by 14 CFR Part 135 and 14 CFR part 298 of the Federal Aviation Regulations (FAR). [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biplane
A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While a biplane wing structure has a structural advantage over a monoplane, it produces more drag than a monoplane wing. Improved structural techniques, better materials and higher speeds made the biplane configuration obsolete for most purposes by the late 1930s. Biplanes offer several advantages over conventional cantilever monoplane designs: they permit lighter wing structures, low wing loading and smaller span for a given wing area. However, interference between the airflow over each wing increases drag substantially, and biplanes generally need extensive bracing, which causes additional drag. Biplanes are distinguished from tandem wing arrangements, where the wings are placed forward and aft, instead of above and below. The term is also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudolf Fizir
Rudolf Fizir (13 January 1891 – 11 November 1960) was an airplane constructor. He designed at least 18 original planes, some conversions of landplanes to seaplanes - and a parachute. Fizir was born in Ludbreg, a small town on the river Bednja, in the north of Croatia. In 1914, whilst still a senior student, he was offered his first job in Schwerin, where he worked in the construction of fighter aircraft for the German '' Fliegerkorps'' in the new ''Fokker-Flugzeugbau'' factory. From there he was sent to Budapest, in order to find and organize a Fokker subsidiary. Between 1918 and 1920, Fizir was employed in the automobile industry, where he gathered experience with internal combustion engines. In 1920 he returned to Ludbreg, and then moved to Petrovaradin. There he started to build his aircraft designs in his yard, at his own expense. With a biplane, which Fizir built in 1925, he won the first prize in the 1927 Little Entente contest, despite having an engine with only half ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hansa-Brandenburg C
Hansa und Brandenburgische Flugzeugwerke (more usually just Hansa-Brandenburg) was a German aircraft manufacturing company that operated during World War I. It was created in May 1914 by the purchase of ''Brandenburgische Flugzeugwerke'' by Camillo Castiglioni, who relocated the factory from Liebau to Brandenburg an der Havel. Brandenburg's chief designer, Ernst Heinkel was retained by the new enterprise. By Autumn 1915, it had become the largest aircraft manufacturer in Germany, with a capital of 1,500,000 Marks, 1,000 employees, and two more factories - one in Rummelsburg, Berlin, and one in Wandsbek, Hamburg. Although manufacturing was carried out in Germany, Castiglioni was an Austrian, and many of the firm's military aircraft were produced for the Austro-Hungarian aviation corps. The firm became especially known for a highly successful series of floatplane fighters and reconnaissance aircraft that were used by the Imperial German Navy during the war. Hansa-Brandenburg did ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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