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Opel RAK
Opel-RAK were a series of rocket vehicles produced by German automobile manufacturer Fritz von Opel,https://www.airforcemag.com/article/0904rocket/ article by Walter J. Boyne in Air Force Magazine, September 1, 2004 of the Opel car company, in association with others, including Max Valier, Julius Hatry, and Friedrich Wilhelm Sander. Opel RAK is generally considered the world's first large-scale rocket program, significantly advancing rocket and aviation technology as well as instrumental in popularizing rockets as means of propulsion. In addition Opel RAK demonstrations were also highly successful as publicity stunts for the Opel car company. The Lippisch Ente (meaning “duck” in German), the world's first rocket-powered glider and piloted for its first flight on June 11, 1928, by Fritz Stamer at Wasserkuppe, was bought and operated by Opel in context of the Opel RAK program but is not formally designated an Opel RAK series number. Also a rocket-powered RAK-Motoclub mot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Julius Hatry
Julius Hatry (30 December 1906 – 7 November 2000) was a German aircraft designer and builder. He is remembered for his contributions to sailplane development in the early twentieth century and for building the world's first purpose-built rocket plane, the Opel RAK.1."Das RAK-Protokoll", a 25 minutes documentary on the Opel RAK program incl. Hatry interview https://opel-tv-footage.com/v/The%20RAK%20Protocoll?p=4&c=86&l=1 Hatry was born in Mannheim as son of Katharina and Julius Hatry senior, a successful Mannheim real estate entrepreneur. Julius Hatry junior developed an early interest in aviation, joining the Mannheim flying club in 1922. With the club, he became a frequent visitor to the annual gliding competitions held at the Wasserkuppe during the 1920s. Between 1927 and 1928, he assisted in the construction of the ''Kakadu'' (then the largest sailplane ever built) with the Munich Akaflieg (student flying) group. References from Alexander Lippisch and Oskar Ursinus helped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opel
Opel Automobile GmbH (), usually shortened to Opel, is a German automobile manufacturer which has been a subsidiary of Stellantis since 16 January 2021. It was owned by the American automaker General Motors from 1929 until 2017 and the PSA Group prior to its merger with Fiat Chrysler Automobiles to form Stellantis in 2021. Most of the Opel lineup is marketed under the Vauxhall Motors, Vauxhall brand in the United Kingdom since the 1980s. Some Opel vehicles were badge engineering, badge-engineered in Australia under the Holden brand until 2020, in North America and China under the Buick, Saturn Corporation, Saturn (until 2010), and Cadillac brands, and in South America under the Chevrolet brand. Opel traces its roots to a sewing machine manufacturer founded by Adam Opel in 1862 in Rüsselsheim am Main. The company began manufacturing bicycles in 1886 and produced its first automobile in 1899. With the Opel RAK program, the world's first rocket program, under the leadership of F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AVUS
The ('Automobile traffic and training road'), known as AVUS (), is a public road in Berlin, Germany. Opened in 1921, it was also used as a motor racing circuit until 1998. Today, the AVUS forms the northern part of the Bundesautobahn 115. Circuit The highway is located in the southwestern districts of Berlin, linking the Stadtring at the Funkturm junction in Charlottenburg with Nikolassee. It runs through the Grunewald forest along the historic ''Königsweg'' road from Charlottenburg to Potsdam and the parallel Berlin-Blankenheim railway line. While normal for a road, it is unusually shaped for a race track as it is essentially two long straights in the form of a dual carriageway, with a hairpin corner at each end. The north curve featured a steep banking from 1937 to 1967. While the original layout was long, the southern turn was moved several times, to shorten the track to , then without the banking, and finally . History In 1907 the Kaiserlicher Automobilclub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tailplane
A tailplane, also known as a horizontal stabilizer, is a small lift (force), lifting surface located on the tail (empennage) behind the main lifting surfaces of a fixed-wing aircraft as well as other non-fixed-wing aircraft such as helicopters and gyroplanes. Not all fixed-wing aircraft have tailplanes. Canard (aeronautics), Canards, tailless aircraft, tailless and flying wing aircraft have no separate tailplane, while in V-tail aircraft the vertical stabilizer, rudder, and the tail-plane and elevator are combined to form two diagonal surfaces in a V layout. The function of the tailplane is to provide stability and control. In particular, the tailplane helps adjust for changes in position of the center of pressure (fluid mechanics), centre of pressure or centre of gravity caused by changes in speed and attitude, fuel consumption, or dropping cargo or payload. Tailplane types The tailplane comprises the tail-mounted fixed horizontal stabilizer and movable Elevator (aeronautics), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wing
A wing is a type of fin that produces both Lift (force), lift and drag while moving through air. Wings are defined by two shape characteristics, an airfoil section and a planform (aeronautics), planform. Wing efficiency is expressed as lift-to-drag ratio, which compares the benefit of lift with the air resistance of a given wing shape, as it flies. Aerodynamics is the study of wing performance in air. Equivalent Foil (fluid mechanics), foils that move through water are found on Hydrofoil, hydrofoil power vessels and Sailing hydrofoil, foiling sailboats that lift out of the water at speed and on submarines that use diving planes to point the boat upwards or downwards, while running submerged. Hydrodynamics is the study of foil performance in water. Etymology and usage The word "wing" from the Old Norse ''vængr'' for many centuries referred mainly to the foremost limb (anatomy), limbs of birds (in addition to the architectural aisle). But in recent centuries the word's meaning ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ente
The Ente () was the world's first full-sized rocket-powered aircraft. It was designed by Alexander Lippisch as a sailplane and first flown under power on June 11, 1928, piloted by Fritz Stamer as part of the Opel-RAK rocket program led by Fritz von Opel and Max Valier. During the late 1920s von Opel had made a variety of demonstrations involving rocket-powered vehicles for the Opel company. He was assisted by the pyrotechnics manufacturer Friedrich Sander and the rocketry advocate Max Valier. In March 1928 the three men visited the Wasserkuppe, a mountain which had become the center of German gliding to investigate the possibility of fitting rockets to an aircraft. There they encountered some of Lippisch's revolutionary gliders, which because of their tail-less designs seemed suitable for adapting to rocket propulsion. Lippisch was able to demonstrate how models of his aircraft would fly with small rockets installed in them. In June, von Opel, Sander, and Valier returned and b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sailplane
A glider or sailplane is a type of glider aircraft used in the leisure activity and sport of gliding (also called soaring). This unpowered aircraft can use naturally occurring currents of rising air in the atmosphere to gain altitude. Sailplanes are aerodynamically streamlined and so can fly a significant distance forward for a small decrease in altitude. In North America the term 'sailplane' is also used to describe this type of aircraft. In other parts of the English-speaking world, the word 'glider' is more common. Types Gliders benefit from producing very low drag for any given amount of lift, and this is best achieved with long, thin wings, a slender fuselage and smooth surfaces with an absence of protuberances. Aircraft with these features are able to soar – climb efficiently in rising air produced by thermals or hills. In still air, sailplanes can glide long distances at high speed with a minimum loss of height in between. Sailplanes have rigid wings and either ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Lippisch
Alexander Martin Lippisch (2 November 1894 – 11 February 1976) was a German aeronautical engineer, a pioneer of aerodynamics who made important contributions to the understanding of tailless aircraft, delta wings and the ground effect in aircraft, ground effect, and also worked in the U.S. Within the Opel-RAK program, he was the designer of the world's first rocket-powered glider. He developed and conceptualized delta wing designs which functioned practically in supersonic delta wing fighter aircraft as well as in hang gliders. People he worked with continued the development of the delta wing and supersonic flight concepts over the 20th century. His most famous designs are the Messerschmitt Me 163 rocket-powered interceptorHanna Reitsch, Reitsch, H., 1955The Sky My Kingdom London: Biddles Limited, Guildford and King's Lynn, and the Dornier Aerodyne. Early life Lippisch was born in Munich, Kingdom of Bavaria. He later recalled that his interest in aviation began with a demonst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RRG Raketen-Ente Deutsches Segelflugmuseum 01 2009-05-31
RRG may be: * Plaine Corail Airport, IATA code for the airport on the island of Rodrigues, Mauritius * Reichs-Rundfunk-Gesellschaft, a network of German broadcasting companies * Rhön-Rossitten Gesellschaft, a German gliding organization * Role and Reference Grammar Role and reference grammar (RRG) is a model of grammar In linguistics, grammar is the set of rules for how a natural language is structured, as demonstrated by its speakers or writers. Grammar rules may concern the use of clauses, phrases, an ..., a model of natural language grammar * Rolls-Royce Ghost, a luxury saloon car {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Max Schmeling
Maximilian Adolph Otto Siegfried Schmeling (, ; 28 September 1905 – 2 February 2005) was a German boxing, boxer who was heavyweight champion of the world between 1930 and 1932. His two fights with Joe Louis in 1936 and 1938 were worldwide cultural events because of their national associations. Schmeling is the only boxer to win the world heavyweight championship on a foul. Starting his professional career in 1924, Schmeling went to the United States in 1928 and, after a ninth-round technical knockout of Johnny Risko, became a sensation. He became the first to win the heavyweight championship (at that time vacant) by disqualification in 1930, after opponent Jack Sharkey knocked him down with a low blow in the fourth round. Schmeling retained his crown successfully in 1931 by a technical knockout victory over Young Stribling. A rematch in 1932 with Sharkey saw the American gaining the title from Schmeling by a controversial fifteen-round split decision. In 1933, Schmeling lost t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
