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KOD-1
The KOD-1 was an Estonian-designed Latvian trainer aircraft built by ''Liepājas Kara Ostas Darbnīcas'' (Liepāja military manufacturing). The KOD-1 was built from 1936 until 1938 and was used as a Trainer (aircraft), trainer by the Latvian Aeroclub and the Aizsargi, Aizsargi home guard. Design and operational history In the 1930s, the Estonian designers Voldemar Post, Otto Org and Roman Neudorf (later changed his name to Rein Tooma) had constructed PON-1 trainer in Estonia. They gave the production license also to Latvia. Production started in 1935 in the Liepāja military workshops under name KOD-1. The airplane was designed as a one or two-seater biplane. The first flight of KOD-1 was in January 1936 when it was flown from Liepāja to Spilve Airport, Spilve airport, Riga. In March the first four airplanes were deployed to the Aizsargi aviation unit. The airplanes were actively used for training purposes as well as for demonstration flights in the Baltic states, Baltics an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liepāja
Liepāja (; liv, Līepõ; see #Names and toponymy, other names) is a state city in western Latvia, located on the Baltic Sea. It is the largest-city in the Kurzeme Planning Region, Kurzeme Region and the third-largest city in the country after Riga and Daugavpils. It is an important ice-free port. The population in 2020 was 68,535 people. In the 19th and early 20th century, it was a favourite place for sea-bathers and travellers, with the town boasting a fine park, many pretty gardens and a theatre. Liepāja is however known throughout Latvia as "City where the wind is born", likely because of the constant sea breeze. A song of the same name ( lv, "Pilsētā, kurā piedzimst vējš") was composed by Imants Kalniņš and has become the anthem of the city. Its reputation as the windiest city in Latvia was strengthened with the construction of the largest wind farm in the nation (33 Enercon wind turbines) nearby. The coat of arms of Liepāja was adopted four days after the jurisdic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gipsy Major
The de Havilland Gipsy Major or Gipsy IIIA is a four-cylinder, air-cooled, inverted inline engine used in a variety of light aircraft produced in the 1930s, including the famous Tiger Moth biplane. Many Gipsy Major engines still power vintage aircraft types. Engines were produced by de Havilland in the UK and by the Australian arm of the company, de Havilland Australia, the latter modifying the design to use imperial measures rather than the original metric measurements. Design and development The engine was a slightly modified Gipsy III, which was effectively a de Havilland Gipsy engine modified to run inverted so that the cylinders pointed downwards below the crankcase. The Major was also bored-out (118 mm from 114 mm) compared to the Gipsy III, increasing displacement from 5 L to 6.1 L. The inverted configuration allowed the propeller shaft to be kept in a high position without having the cylinders blocking the pilot's forward view over the nose of the airc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trainer Aircraft
A trainer is a class of aircraft designed specifically to facilitate flight training of pilots and aircrews. The use of a dedicated trainer aircraft with additional safety features—such as tandem flight controls, forgiving flight characteristics and a simplified cockpit arrangement—allows pilots-in-training to safely advance their skills in a more forgiving aircraft. Civilian pilots are normally trained in a light aircraft, with two or more seats to allow for a student and instructor. Tandem and side by side The two seating configurations for trainer aircraft are: pilot and instructor side by side, or in tandem, usually with the pilot in front and the instructor behind. The side-by-side seating configuration has the advantage that pilot and instructor can see each other's actions, allowing the pilot to learn from the instructor and the instructor to correct the student pilot. The tandem configuration has the advantage of being closer to the normal working environment that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riga
Riga (; lv, Rīga , liv, Rīgõ) is the capital and largest city of Latvia and is home to 605,802 inhabitants which is a third of Latvia's population. The city lies on the Gulf of Riga at the mouth of the Daugava river where it meets the Baltic Sea. Riga's territory covers and lies above sea level, on a flat and sandy plain. Riga was founded in 1201 and is a former Hanseatic League member. Riga's historical centre is a UNESCO World Heritage Site, noted for its Art Nouveau/Jugendstil architecture and 19th century wooden architecture. Riga was the European Capital of Culture in 2014, along with Umeå in Sweden. Riga hosted the 2006 NATO Summit, the Eurovision Song Contest 2003, the 2006 IIHF Men's World Ice Hockey Championships, 2013 World Women's Curling Championship and the 2021 IIHF World Championship. It is home to the European Union's office of European Regulators for Electronic Communications (BEREC). In 2017, it was named the European Region of Gastronomy. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Engine
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many small UAVs have used electric motors. Manufacturing industry In commercial aviation the major Western manufacturers of turbofan engines are Pratt & Whitney (a subsidiary of Raytheon Technologies), General Electric, Rolls-Royce, and CFM International (a joint venture of Safran Aircraft Engines and General Electric). Russian manufacturers include the United Engine Corporation, Aviadvigatel and Klimov. Aeroengine Corporation of China was formed in 2016 with the merger of several smaller companies. The largest manufacturer of turboprop engines for general aviation is Pratt & Whitney. General Electric announced in 2015 entrance into the market. Development history * 1848: John Stringfellow made a steam engine for a 10-foot wingspan mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four Stroke
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: #Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston. #Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are clos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armstrong Siddeley Genet Major I
The Armstrong Siddeley Genet Major is a British five-cylinder (later seven-cylinder), air-cooled, radial engine for aircraft, designed and built by Armstrong Siddeley and first run in 1928. It developed 140 horsepower (104 kW). In Royal Air Force use the seven-cylinder version was known as the Civet I. The Feliform names used are in line with company convention, the Genet and Civet both being large cat-like carnivores. Variants and applications Genet Major I The Genet Major 1 was a five-cylinder engine of that was closely related to the Genet I but with increased bore and stroke. * Avro Avian * Avro 619 * Avro 624 * Avro 638 Club Cadet * Cierva C.19 Autogiro * Civilian Coupé * Saro Cutty Sark * Southern Martlet * Westland IV Genet Major 1A (Civet I) The Genet Major 1A (or Civet I in RAF service) was a seven-cylinder development of the Genet Major I, nominally rated at . * Avro Avian * Avro Cadet * Avro Rota * Cierva C.30A Autogiro * RWD-6 (not specified 7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national republics; in practice, both its government and its economy were highly centralized until its final years. It was a one-party state governed by the Communist Party of the Soviet Union, with the city of Moscow serving as its capital as well as that of its largest and most populous republic: the Russian SFSR. Other major cities included Leningrad (Russian SFSR), Kiev (Ukrainian SSR), Minsk ( Byelorussian SSR), Tashkent (Uzbek SSR), Alma-Ata (Kazakh SSR), and Novosibirsk (Russian SFSR). It was the largest country in the world, covering over and spanning eleven time zones. The country's roots lay in the October Revolution of 1917, when the Bolsheviks, under the leadership of Vladimir Lenin, overthrew the Russian Provisional Government ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Barbarossa
Operation Barbarossa (german: link=no, Unternehmen Barbarossa; ) was the invasion of the Soviet Union by Nazi Germany and many of its Axis allies, starting on Sunday, 22 June 1941, during the Second World War. The operation, code-named after Frederick Barbarossa ("red beard"), a 12th-century Holy Roman emperor and German king, put into action Nazi Germany's ideological goal of conquering the western Soviet Union to repopulate it with Germans. The German aimed to use some of the conquered people as forced labour for the Axis war effort while acquiring the oil reserves of the Caucasus as well as the agricultural resources of various Soviet territories. Their ultimate goal was to create more (living space) for Germany, and the eventual extermination of the indigenous Slavic peoples by mass deportation to Siberia, Germanisation, enslavement, and genocide. In the two years leading up to the invasion, Nazi Germany and the Soviet Union signed political and economic pacts for st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulbene
Gulbene (; german: Schwanenburg) is a town in northeastern Latvia. It is an administrative center of Gulbene Municipality. The area of this region is , with a population of 29,797 inhabitants (69,369 sealen, 10,015 urban, 19,782 rural population). History Historical documents first mention the 1224 land division act between the Order of the Sword Brothers and the Archbishop of Riga. In the 14th century, the Archbishop built a stone castle around which a populated place was formed. The Evangelical Lutheran church (Brivības iela 13) was built on the ancient Latgalian castle mound in place of the later Middle Age brick castle from 1838–1843. The church is built in the classical style. Vecgulbene (Old Gulbene) estate complex was built in the middle and second half of the 19th century not far off the church. The most significant buildings are the White Palace (Brivības iela 12), the Red Palace (Parka iela 1) and the magazine granary (Brivības iela 9). Both palaces have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Occupation Of Latvia 1940-1945
The Soviet occupation of Latvia in 1940 refers to the military occupation of the Republic of Latvia by the Soviet Union under the provisions of the 1939 Molotov–Ribbentrop Pact with Nazi Germany and its Secret Additional Protocol signed in August 1939. The occupation took place according to the European Court of Human Rights, European Court of Human Rights cases on Occupation of Baltic States the Government of Latvia,The Occupation of Latvia at Ministry of Foreign Affairs of the Republic of Latvia the , [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finland
Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland across Estonia to the south. Finland covers an area of with a population of 5.6 million. Helsinki is the capital and largest city, forming a larger metropolitan area with the neighbouring cities of Espoo, Kauniainen, and Vantaa. The vast majority of the population are ethnic Finns. Finnish, alongside Swedish, are the official languages. Swedish is the native language of 5.2% of the population. Finland's climate varies from humid continental in the south to the boreal in the north. The land cover is primarily a boreal forest biome, with more than 180,000 recorded lakes. Finland was first inhabited around 9000 BC after the Last Glacial Period. The Stone Age introduced several differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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