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Aggregat (rocket Family)
The ''Aggregat'' series (German for "Aggregate") was a set of ballistic missile designs developed in 1933–1945 by a research program of Nazi Germany's Army ( ''Heer''). Its greatest success was the A4, more commonly known as the V2. A1 (1933) The A1 was the first rocket design in the ''Aggregat'' series. It was designed in 1933 by Wernher von Braun at the German Army research program at Kummersdorf headed by Colonel Dr Walter Dornberger. The A1 was the grandfather of most modern rockets. The rocket was long, in diameter, and had a takeoff weight of . The engine, designed by Arthur Rudolph, used a pressure-fed rocket propellant system burning ethanol and liquid oxygen, and produced 2.9 kN (660 lbf) of thrust for 16 seconds. The LOX tank was located within the fuel tank and insulated with a fiberglass material. The rocket was stabilized by a 3 axes gyroscope system in the nose, supplied by Kreiselgeräte GmbH. The rocket could not be rotated for stability as with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballistic Missile
A ballistic missile is a type of missile that uses projectile motion to deliver warheads on a target. These weapons are powered only during relatively brief periods—most of the flight is unpowered. Short-range ballistic missiles (SRBM) typically stay within the Earth's atmosphere, while most larger missiles travel outside the atmosphere. The type of ballistic missile with the greatest range is an intercontinental ballistic missile (ICBM). The largest ICBMs are capable of full orbital flight. These missiles are in a distinct category from cruise missiles, which are aerodynamically guided in powered flight and thus restricted to the atmosphere. History One modern pioneer ballistic missile was the A-4, commonly known as the V-2, developed by Nazi Germany in the 1930s and 1940s under the direction of Wernher von Braun. The first successful launch of a V-2 was on October 3, 1942, and it began operation on September 6, 1944, against Paris, followed by an attack on London two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrifugal Force
Centrifugal force is a fictitious force in Newtonian mechanics (also called an "inertial" or "pseudo" force) that appears to act on all objects when viewed in a rotating frame of reference. It appears to be directed radially away from the axis of rotation of the frame. The magnitude of the centrifugal force ''F'' on an object of mass ''m'' at the perpendicular distance ''ρ'' from the axis of a rotating frame of reference with angular velocity is F = m\omega^2 \rho. This fictitious force is often applied to rotating devices, such as centrifuges, centrifugal pumps, centrifugal governors, and centrifugal clutches, and in centrifugal railways, planetary orbits and banked curves, when they are analyzed in a non–inertial reference frame such as a rotating coordinate system. The term has sometimes also been used for the '' reactive centrifugal force'', a real frame-independent Newtonian force that exists as a reaction to a centripetal force in some scenarios. History F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Werner Von Fritsch
Thomas Ludwig Werner Freiherr von Fritsch (4 August 1880 – 22 September 1939) was a German ''Generaloberst'' (Full General, full general) who served as Oberkommando des Heeres, Commander-in-Chief of the German Army (Wehrmacht), German Army from February 1934 until February 1938, when he was forced to resign after he was falsely accused of being homosexual. His and Ministry of the Reichswehr, War Minister Werner von Blomberg, Blomberg's ousting, in the Blomberg–Fritsch affair, Blomberg-Fritsch affair, was a major step in Adolf Hitler's establishment of tighter control over the armed forces. Just over a year later, before the outbreak of World War II, Fritsch was recalled as Colonel-in-chief of the 12th Artillery Regiment. He died in battle in General Government, Poland early in the war, the second German general to perish in that conflict after Wilhelm Fritz von Roettig. Early life Fritsch was born in Düsseldorf-Benrath, Benrath in the Rhine Province of the German Empire. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generaloberst
A ("colonel general") was the second-highest general officer rank in the German '' Reichswehr'' and ''Wehrmacht'', the Austro-Hungarian Common Army, the East German National People's Army and in their respective police services. The rank was equal to a four-star full general but below a '' Generalfeldmarschall''. The rank was equivalent to a '' Generaladmiral'' in the ''Kriegsmarine'' until 1945 or to a '' Flottenadmiral'' in the '' Volksmarine'' until 1990. It was the highest ordinary military rank and the highest military rank awarded in peacetime; the higher rank of general field marshal was awarded only in wartime by the head of state. In general, a ''Generaloberst'' had the same privileges as a general field marshal. A literal translation of ''Generaloberst'' would be "uppermost general", but it is often translated as "colonel-general" by analogy to ''Oberst'', "colonel", such as in countries in which the rank was adopted like Russia (). "Oberst" derives from the su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inertial Guidance System
An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors ( gyroscopes) and a computer to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object without the need for external references. Often the inertial sensors are supplemented by a barometric altimeter and sometimes by magnetic sensors ( magnetometers) and/or speed measuring devices. INSs are used on mobile robots and on vehicles such as ships, aircraft, submarines, guided missiles, and spacecraft. Older INS systems generally used an inertial platform as their mounting point to the vehicle and the terms are sometimes considered synonymous. Design Inertial navigation is a self-contained navigation technique in which measurements provided by accelerometers and gyroscopes are used to track the position and orientation of an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Heinrich Emil Becker
Karl Heinrich Emil Becker (14 September 1879 – 8 April 1940) was a German weapons engineer and artillery general. He advocated and implemented close ties of the military to science for purposes of advanced weapons development. He was the head of the Army Ordnance Office, Senator of the Kaiser Wilhelm Society, first president of the Reich Research Council, the first general officer to be a member of the Prussian Academy of Sciences, as well as being a professor at both the University of Berlin and Technische Universität Berlin. In the late 1920s, he realised that a loophole in the Treaty of Versailles allowed Germany to develop rocket weapons. The military-scientific infrastructure he helped implement supported the German nuclear energy program, known as the Uranium Club. Being depressed over heavy criticism from Hitler for shortfalls in munitions production, he committed suicide in 1940. He was given a State funeral. Career From 1898, Becker was a military engineer. From 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Der Artillerie
(English language, en: General of the artillery) may mean: A rank of three-star rank, three-star General of the branch, general, comparable to modern armed forces OF-8 grade, in the Imperial German Army and its contingency armies of Prussian Army, Prussia, Bavarian Army, Bavaria, Saxon Army, Saxony and Army of Württemberg, Württemberg. It also was used in the Reichswehr and the Wehrmacht. The second-highest regular rank below ; cavalry officers of equivalent rank were called ''General of the Cavalry (Germany), general of the cavalry'', and infantry officers of equivalent rank ''General of the Infantry (Germany), general of the infantry''. The Wehrmacht also had ''General der Panzertruppen'' (tank troops), ''General der Gebirgstruppen'' (mountain troops), (engineers), ''General der Nachrichtentruppen'' (communications troops) and several branch variants for the Luftwaffe. In the modern , ''General der Artillerie'' is the position of an artillery officer responsible for ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Ritter Von Horstig
Ernst is both a surname and a given name, the German, Dutch, and Scandinavian form of Ernest. Notable people with the name include: Surname * Adolf Ernst (1832–1899) German botanist known by the author abbreviation "Ernst" * Anton Ernst (born 1975), South African film producer * Alice Henson Ernst (1880-1980), American writer and historian * Bastian Ernst (born 1987), German politician * Britta Ernst (born 1961), German politician * Cornelia Ernst (born 1956), German politician * Edzard Ernst (born 1948), German-British academic * Emil Ernst (1889–1942), astronomer * Ernie Ernst (1924/25–2013), American judge * Eugen Ernst (1864–1954), German politician * Fabian Ernst (born 1979), German soccer player * Fedir Ernst (1891-1942), Ukrainian art historian * Gustav Ernst (born 1944), Austrian writer * Heinrich Wilhelm Ernst (1812–1865), Moravian violinist and composer * Jim Ernst (born 1942), Canadian politician * Jimmy Ernst (1920–1984), American painter, son of Max Er ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regenerative Cooling (rocket)
In rocket engine design, regenerative cooling is a configuration in which some or all of the propellant is passed through tubes, channels, or in a jacket around the combustion chamber or nozzle to cool the engine. This is effective because the propellants are often cryogenic. The heated propellant is then fed into a special gas-generator or injected directly into the main combustion chamber. History In 1857 Carl Wilhelm Siemens introduced the concept of regenerative cooling. On 10 May 1898, James Dewar used regenerative cooling to become the first to statically liquefy hydrogen. The concept of regenerative cooling was also mentioned in 1903 in an article by Konstantin Tsiolkovsky. Robert Goddard built the first regeneratively cooled engine in 1923, but rejected the scheme as too complex. A regeneratively cooled engine was built by the Italian researcher, Gaetano Arturo Crocco in 1930. The first Soviet engines to employ the technique were Fridrikh Tsander's OR-2 tested i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total population of over 84 million in an area of , making it the most populous member state of the European Union. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The Capital of Germany, nation's capital and List of cities in Germany by population, most populous city is Berlin and its main financial centre is Frankfurt; the largest urban area is the Ruhr. Settlement in the territory of modern Germany began in the Lower Paleolithic, with various tribes inhabiting it from the Neolithic onward, chiefly the Celts. Various Germanic peoples, Germanic tribes have inhabited the northern parts of modern Germany since classical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Sea
The North Sea lies between Great Britain, Denmark, Norway, Germany, the Netherlands, Belgium, and France. A sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian Sea in the north. It is more than long and wide, covering . It hosts key north European shipping lanes and is a major fishery. The coast is a popular destination for recreation and tourism in bordering countries, and a rich source of energy resources, including wind energy, wind and wave power. The North Sea has featured prominently in geopolitical and military affairs, particularly in Northern Europe, from the Middle Ages to the modern era. It was also important globally through the power northern Europeans projected worldwide during much of the Middle Ages and into the modern era. The North Sea was the centre of the Viking Age, Vikings' rise. The Hanseatic League, the Dutch Golden Age, Dutch Republic, and Kingdom of Great Britain, Brita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borkum
Borkum (; ) is an island and a municipality in the Leer District in Lower Saxony, northwestern Germany. It is situated east of Rottumeroog and west of Juist. Geography Borkum is bordered to the west by the Westerems strait (which forms the border with the Netherlands), to the east by the Osterems strait, to the north by the North Sea, and to the south by the Wadden Sea. It is the largest and westernmost of the East Frisian Islands in the North Sea, due north of the Dutch province of Groningen. The island was formed in 1863 by two previously separate islands which were still separated by a shallow water. The seam between the former eastern and western parts is called ''Tüskendör'' ("through in between"). Climate Borkum is the only East Frisian island that is under the influence of the North Sea all year round thanks to its distance from the mainland. The maritime climate is influenced by the Gulf Stream and the west wind zone with correspondingly high humidity through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
