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Polikarpov I-15
The Polikarpov I-15 (russian: И-15) was a Soviet biplane fighter aircraft of the 1930s. Nicknamed ''Chaika'' (''russian: Чайка'', "Seagull") because of its gulled upper wings,Gunston 1995, p. 299.Green and Swanborough 1979, p. 10. it was operated in large numbers by the Soviet Air Force, and together with the Polikarpov I-16 monoplane, was one of the standard fighters of the Spanish Republicans during the Spanish Civil War, where it was called Chato (snub-nose). Design and development The design for the 14th fighter for the VVS, the I-14, started as an advanced (for the era) monoplane under the direction of Andrei Tupolev. He grew concerned that the design would not mature, and ordered two backup biplane designs as the I-14A and B just to be safe. Polikarpov had just been released from prison in August 1932, and was handed the I-14A project. When both the I-14 and I-14A were ordered into production, Polikarpov's design, a development of the I-5 fighter became the famous ... [...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] |
Andrei Tupolev
Andrei Nikolayevich Tupolev (russian: Андрей Николаевич Туполев; – 23 December 1972) was a Russian Empire, Russian and later Soviet Union, Soviet aeronautical engineer known for his pioneering aircraft designs as Director of the Tupolev Design Bureau. Tupolev was an early pioneer of aeronautics in Russia and served as a protégé of Nikolay Zhukovsky (scientist), Nikolay Zhukovsky. Tupolev designed or oversaw the design of more than 100 types of civilian and military aircraft in the Soviet Union over 50 years, some of which set 78 world records. Tupolev produced many notable designs such as the Tupolev Tu-2, Tu-2, Tupolev Tu-16, Tu-16, Tupolev Tu-95, Tu-95, and Tupolev Tu-104, Tu-104, and the reverse engineered Tu-4. Tupolev was highly honoured in the Soviet Union and awarded various titles and honours including the Hero of Socialist Labor three times, Order of Lenin eight times, Order of the Red Banner of Labour two times, made an academician of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China–Mongolia Border
The China–Mongolia border is the international border between China and Mongolia. It runs from west to east between the two tripoints with Russia for , with most of the boundary area lying in the Gobi Desert. It is the world's fourth longest international border. Description The border starts in the west at the western tripoint with Russia in the Altai Mountains, located just 100 kilometres (62 miles) east of the China-Kazakhstan-Russia tripoint. From there it runs overland in a generally south-eastwards direction, with straight line sections predominant in the Gobi Desert section, down to the southernmost point of Mongolia just north of the 40°30 line of latitude. From there it proceeds overland in a north-eastwards direction, over to the Greater Khingan mountains near Mongolia's easternmost point. From there the border veers to the north-west and then west, utilising the Khalkhyn Gol river for a stretch before running through Buir Lake, and then turning sharply to the north- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet–Japanese Border Conflicts
The Soviet–Japanese border conflicts, also known as the Soviet-Japanese Border War or the First Soviet-Japanese War,was a series of minor and major conflicts fought between the Soviet Union (led by Joseph Stalin), Mongolia (led by Khorloogiin Choibalsan) and Japan (led by Hirohito) in Northeast Asia from 1932 to 1939. It is the first Soviet-Japanese War. Japanese expansion in Northeast China created a common border between the Japanese occupied ground and Soviet Far East. This led to growing tensions with the Soviet Union, with both sides often violating the border and accusing each other of border violations. The Soviets and Japanese, including their respective client states of Mongolia and Manchukuo, fought in a series of escalating small border skirmishes and punitive expeditions from 1935 until Soviet-Mongolian victory over the Japanese in the Battles of Khalkhin Gol in 1939 which resolved the dispute and returned the borders to '' status quo ante bellum''. The Soviet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Republic Of China Air Force
The Republic of China Air Force, retroactively known by its historical name the Chinese Air Force and unofficially referred to as the Taiwanese Air Force, is the military aviation branch of the Republic of China Armed Forces, currently based in Taiwan. The ROCAF was founded in 1920 by the Kuomintang. While its historical name is sometimes used especially in domestic circles, it is not used as often internationally due to the current ambiguous political status of Taiwan and to avoid confusion with the People's Liberation Army Air Force of the People's Republic of China (PRC). Its primary mission is the defense of the airspace over and around the Taiwan area. Priorities of the ROCAF include the development of long range reconnaissance and surveillance networks, integrating C4ISTAR systems to increase battle effectiveness, procuring counterstrike weapons, next generation fighters, and hardening airfields and other facilities to survive a surprise attack. In May 2005, the Minist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuomintang
The Kuomintang (KMT), also referred to as the Guomindang (GMD), the Nationalist Party of China (NPC) or the Chinese Nationalist Party (CNP), is a major political party in the Republic of China, initially on the Chinese mainland and in Taiwan after 1949. It was the sole party in China during the Republican Era from 1928 to 1949, when most of the Chinese mainland was under its control. The party retreated from the mainland to Taiwan on 7 December 1949, following its defeat in the Chinese Civil War. Chiang Kai-shek declared martial law and retained its authoritarian rule over Taiwan under the ''Dang Guo'' system until democratic reforms were enacted in the 1980s and full democratization in the 1990s. In Taiwanese politics, the KMT is the dominant party in the Pan-Blue Coalition and primarily competes with the rival Democratic Progressive Party (DPP). It is currently the largest opposition party in the Legislative Yuan. The current chairman is Eric Chu. The party originate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Polikarpov I-15bis
Chinese can refer to: * Something related to China * Chinese people, people of Chinese nationality, citizenship, and/or ethnicity **''Zhonghua minzu'', the supra-ethnic concept of the Chinese nation ** List of ethnic groups in China, people of various ethnicities in contemporary China ** Han Chinese, the largest ethnic group in the world and the majority ethnic group in Mainland China, Hong Kong, Macau, Taiwan, and Singapore ** Ethnic minorities in China, people of non-Han Chinese ethnicities in modern China ** Ethnic groups in Chinese history, people of various ethnicities in historical China ** Nationals of the People's Republic of China ** Nationals of the Republic of China ** Overseas Chinese, Chinese people residing outside the territories of Mainland China, Hong Kong, Macau, and Taiwan * Sinitic languages, the major branch of the Sino-Tibetan language family ** Chinese language, a group of related languages spoken predominantly in China, sharing a written script (Chinese c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Construcciones Aeronáuticas SA
Construcciones Aeronáuticas SA (CASA) was a Spanish aircraft manufacturer that was founded in 1923 and began manufacturing aircraft the following year. In 1999 it became a subsidiary of the EADS (European Aeronautic Defence and Space Company) under the name ''EADS CASA'' and in 2009 was absorbed into Airbus Military. CASA is noted for designing and producing military transport aircraft such as the CASA C-212 Aviocar, the CASA CN-235, the CASA C-295 and the CASA C-101 trainer/ground attack aircraft. History Construcciones Aeronáuticas SA (CASA) was founded by José Ortiz-Echagüe in 1923 and began work on a factory in Getafe in May 1924, building Breguet aircraft under license. The first order covered 26 19 A.2s; total production of this type eventually reached 400 units. CASA built a second factory in Cadiz in 1926 to construct a licensed copy of the German Dornier Do. J Wal seaplane. They built 17 aircraft for the Spanish Air Force, 12 for the Naval Aviation branch of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metrication
Metrication or metrification is the act or process of converting to the metric system of measurement. All over the world, countries have transitioned from local and traditional units of measurement to the metric system. This process began in France during the 1790s, and is still continuing more than 200 years later, with the modern International System of Units, as the metric system has not yet been fully adopted in all countries and areas. Overview Most countries now have the metric system as their official system of weights and measures. Some have adopted it as their official system but have not yet completed the process of metrication. Some others have not made any commitment to adopting it. There is not a general consensus in the sources as to the number of countries that fall into each of these categories. According to a 2011 doctoral dissertation by Hector Vera, as of 2010, a total of seven countries had not "adopted the metric system as their exclusive system of measur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shvetsov M-25
The Shvetsov M-25 was an aircraft radial engine produced in the Soviet Union (USSR) in the 1930s and 1940s, a licensed production variant of the Wright R-1820-F3. Design and development The first M-25s were produced from kits imported from the United States; the main difference between the later M-25 and the R-1820-F3 was the use of metric components. 13,888 M-25s were produced in the USSR at factories in Perm and Kazan. There were a number of sub-variants which differed from the original M-25 in that they had reduction gears, rather than direct drive. Performance was similar to the equivalent Wright engines. The M-25 was later developed into the ASh-62 and was later used as a pattern for the M-70. The M-70, a twin-row 18-cylinder engine, eventually developed into the ASh-73 which powered the Tupolev Tu-4, a reverse-engineered copy of the Boeing B-29. Applications * Gotha Go 244 * Kharkiv KhAI-5bis * Tupolev I-14 * Polikarpov I-15bis * Polikarpov I-153 * Polikarpov I-16 ... [...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] |
Bristol Jupiter
The Bristol Jupiter was a British nine-cylinder single-row piston radial engine built by the Bristol Aeroplane Company. Originally designed late in World War I and known as the Cosmos Jupiter, a lengthy series of upgrades and developments turned it into one of the finest engines of its era. The Jupiter was widely used on many aircraft designs during the 1920s and 1930s. Thousands of Jupiters of all versions were produced, both by Bristol and abroad under licence. A turbo-supercharged version of the Jupiter known as the Orion suffered development problems and only a small number were produced. The "Orion" name was later re-used by Bristol for an unrelated turboprop engine. Design and development The Jupiter was designed during World War I by Roy Fedden of Brazil Straker and later Cosmos Engineering. The first Jupiter was completed by Brazil Straker in 1918 and featured three carburettors, each one feeding three of the engine's nine cylinders via a spiral deflector housed ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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