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WSK WN-3
The WN-3 was a Polish seven-cylinder air-cooled radial engine of the 1950s, produced by WSK-Kalisz, designed by Wiktor Narkiewicz. Design and development In 1946, Wiktor Narkiewicz, who prior to the Second World War was technical director of the Czechoslovakian Avia aero-engine factory, was appointed chief designer of the Polish Central Engine Office, and later the Aero-engine department of the Polish Aviation Institute (''Instytut Lotnictwa'', IL). He led the design of the WN-1, a air-cooled flat-four piston engine which was the first post-war Polish aero-engine, followed by the WN-2 in 1947, but both of these engines failed to enter production.''Flight'' 26 July 1957, p. 127. In 1952 Narkiewicz set up a small design team to design a new seven-cylinder radial engine, the WN-3. The first prototype, rated at was completed in 1954, and by the time testing was completed in 1955, the engine's power rose to . The WN-3 entered production in 1956,Cynk ''Flight International'' 4 J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister 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'' 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 outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flat-four
A flat-four engine, also known as a horizontally opposed-four engine, is a four-cylinder piston engine with two banks of cylinders lying on opposite sides of a common crankshaft. The most common type of flat-four engine is the boxer-four engine, each pair of opposed pistons moves inwards and outwards at the same time. A boxer-four engine has perfect primary and secondary balance, however, the two cylinder heads means the design is more expensive to produce than an inline-four engine. Boxer-four engines have been used in cars since 1897, especially by Volkswagen and Subaru. They have also occasionally been used in motorcycles and frequently in aircraft. Cessna and Piper use flat four engines from Lycoming and Continental in the most common civil aircraft in the world - the Cessna 172, and Piper Cherokee, while many ultralight and LSA planes use versions of the Rotax 912. Design Most flat-four engines are designed so that each pair of opposing pistons moves inwards and o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight International
''Flight International'' is a monthly magazine focused on aerospace. Published in the United Kingdom and founded in 1909 as "A Journal devoted to the Interests, Practice, and Progress of Aerial Locomotion and Transport", it is the world's oldest continuously published aviation news magazine. ''Flight International'' is published by DVV Media Group. Competitors include Jane's Information Group and ''Aviation Week''. Former editors of, and contributors include H. F. King, Bill Gunston, John W. R. Taylor and David Learmount. History The founder and first editor of ''Flight'' was Stanley Spooner. He was also the creator and editor of ''The Automotor Journal'', originally titled ''The Automotor Journal and Horseless Vehicle''.Guide To British Industrial History: Biographies: ''Stan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
72 Octane
7 (seven) is the natural number following 6 and preceding 8. It is the only prime number preceding a cube. As an early prime number in the series of positive integers, the number seven has greatly symbolic associations in religion, mythology, superstition and philosophy. The seven Classical planets resulted in seven being the number of days in a week. It is often considered lucky in Western culture and is often seen as highly symbolic. Unlike Western culture, in Vietnamese culture, the number seven is sometimes considered unlucky. It is the first natural number whose pronunciation contains more than one syllable. Evolution of the Arabic digit In the beginning, Indians wrote 7 more or less in one stroke as a curve that looks like an uppercase vertically inverted. The western Ghubar Arabs' main contribution was to make the longer line diagonal rather than straight, though they showed some tendencies to making the digit more rectilinear. The eastern Arabs developed the digit fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PZL MD-12
The MD-12 is a Polish four-engined short-range passenger and civil utility aircraft of the 1960s, which remained in the prototype stage. The PZL brand is conventional, since it did not enter production, and was referred to under its project designation only. Design and development The aircraft was development as a successor to the Lisunov Li-2 on short domestic routes for LOT Polish Airlines. The plane was designed by a design bureau led by Franciszek Misztal in the Aviation Institute (''Instytut Lotnictwa''). The first design work started in 1954 (under the designation FM-12, for 16 passengers). The final design MD-12 appeared in 1956, after Leszek Dulęba had joined the teamBabiejczuk, Grzegorzewski 1974. p.78-80 (the designations apparently came from Franciszek Misztal, then Misztal-Dulęba). Initially it was to be powered with two Soviet 615 hp Shvetsov ASh-21 engines, but because their production ceased, a four-engine configuration was chosen, with Polish 315 hp W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kalisz
(The oldest city of Poland) , image_skyline = , image_caption = ''Top:'' Town Hall, Former "Calisia" Piano Factory''Middle:'' Courthouse, "Gołębnik" tenement''Bottom:'' Aerial view of the Kalisz Old Town , image_flag = POL Kalisz flag.svg , flag_border = no , image_shield = POL Kalisz COA.svg , pushpin_map = Poland Greater Poland Voivodeship#Poland , pushpin_relief = 1 , pushpin_label_position = bottom , subdivision_type = List of sovereign states, Country , subdivision_name = , subdivision_type1 = Voivodeships of Poland, Voivodeship , subdivision_name1 = , subdivision_type2 = Powiat, County , subdivision_name2 = ''city-county'' , leader_title = Mayor , leader_name = Krystian Kinastowski , established_title = Established , established_date = 9th century , established_title3 = Town rights , established_date3 = after 1268 , area_total_km2 = 69.42 , population_as_of = 31 December 2021 , population_total = 97,905 (List of cities and towns in Poland, 38th) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avia
Avia Motors s.r.o. is a Czech automotive manufacturer. It was founded in 1919 as an aircraft maker, and diversified into trucks after 1945. As an aircraft maker it was notable for producing biplane fighter aircraft, especially the B-534. Avia ceased aircraft production in 1963. History The company was founded by Pavel Beneš, Miroslav Hajn, Jaroslav František Koch and Václav Malý in 1919 and became part of Škoda Works a.s. in 1928. During the 1930s the factory became the biggest aircraft producer in Czechoslovakia and moved to Letňany near Prague, where production continues until today. During the Nazi occupation Avia made aircraft for the German Luftwaffe. After the war the company was nationalized and became involved in the automotive industry. It made aircraft until 1963, then concentrated on truck production and continued to make aircraft engines (producing only propellers from 1988). The company was split in 1992 into propeller and truck sections, both using the A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft/page Content
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister 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'' 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 outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second World War
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radial Engine
The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized star when viewed from the front, and is called a "star engine" in some other languages. The radial configuration was commonly used for aircraft engines before gas turbine engines became predominant. Engine operation Since the axes of the cylinders are coplanar, the connecting rods cannot all be directly attached to the crankshaft unless mechanically complex forked connecting rods are used, none of which have been successful. Instead, the pistons are connected to the crankshaft with a master-and-articulating-rod assembly. One piston, the uppermost one in the animation, has a master rod with a direct attachment to the crankshaft. The remaining pistons pin their connecting rods' attachments to rings around the edge of the master rod. Extra "rows" of radial cylinders can be added i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
