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Flettner Fl 265
The Flettner Fl 265 was an experimental helicopter designed by Anton Flettner. Design and development This helicopter, developed in 1938 with the support of Nazi Germany's ''Kriegsmarine'', made it possible, for the first time, to transition from powered rotary-wing flight to autorotation and back again, making it the safest helicopter of its time. In contrast to the Fl 185, the Fl 265, believed to be the pioneering example of a synchropter, had two intermeshing rotors 12 m in diameter, powered by a 160 hp (119 kW) BMW-Bramo Sh 14 A radial engine in the nose of the fuselage, fitted with a fan to assist cooling. Six helicopters were constructed, but series production was curtailed in favour of the Flettner Fl 282. Operators ; *''Luftwaffe The ''Luftwaffe'' () was the aerial-warfare branch of the German ''Wehrmacht'' before and during World War II. Germany's military air arms during World War I, the ''Luftstreitkräfte'' of the Imperial Army and the '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hubschraubermuseum Bückeburg
The Hubschraubermuseum Bückeburg (Bückeburg Helicopter Museum) is located in the German town of Bückeburg, 30 miles (50 km) to the west of Hanover. The museum is the sole museum in Germany specialising in rotary-wing flight and one of few worldwide. The museum is dedicated to the history and technology of the helicopter. History Sergeant Major Werner Noltemeyer gathered parts, models, books and photographs of rotary-wing aircraft while he was training to become a helicopter pilot in the German Army Aviation Corps. In 1959 the German School of Army Aviation was established in Bückeburg. In the late 1960s, the city council of Bückeburg offered Noltemeyer an old timbered-framed building for use as a museum which opened in 1971. Due to a shortage of space an additional exhibition hall was added in 1980. The museum was further expanded with a glass addition in 2011. Hubschrauberzentrum e. V. The ''Hubschrauberzentrum e. V.'' (Helicopter Centre Association) - founded i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synchropter
Intermeshing rotors on a helicopter are a set of two rotors turning in opposite directions, with each rotor mast mounted with a slight angle to the other, in a transversely symmetrical manner, so that the blades intermesh without colliding. The arrangement allows the helicopter to function without a tail rotor, which saves power. However, neither rotor lifts directly vertically, which reduces efficiency per each rotor. This configuration is sometimes referred to as a synchropter. Yaw is accomplished through varying torque, which is done by increasing collective pitch on one of the blade sets. Most intermeshing designs have two blades per mast, although exceptions such as the Kellett XR-10 with three blades per mast do exist. The arrangement was developed in Germany by Anton Flettner for a small anti-submarine warfare helicopter, the Flettner Fl 265 as the pioneering example, and later the Flettner Fl 282 Kolibri. During the Cold War the American Kaman Aircraft company p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flettner Aircraft
A Flettner airplane is a type of rotor airplane which uses a Flettner rotor to provide lift. The rotor comprises a spinning cylinder with circular end plates and, in an aircraft, spins about a spanwise horizontal axis. When the aircraft moves forward, the Magnus effect creates lift. Anton Flettner, after whom the rotor is named, used it successfully as the sails of a rotor ship. He also suggested its use as a wing for a rotor airplane. The Butler Ames Aerocycle was built in 1910 and tested aboard a warship. There is no record of it having flown. The Plymouth A-A-2004 was built for Zaparka in 1930 by three anonymous American inventors. It was reported to have made successful flights over Long Island Sound. An inherent safety concern is that if power to the rotating drums were lost—even if thrust was maintained—the aircraft would lose its ability to generate lift as the drum slowed and it would not be able to sustain flight. See also * Cyclogyro * FanWing * Servo tab __N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930s German Helicopters
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 ''Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II Helicopters Of Germany
In its most general sense, the term "world" refers to the totality of entities, to the whole of reality or to everything that is. The nature of the world has been conceptualized differently in different fields. Some conceptions see the world as unique while others talk of a "plurality of worlds". Some treat the world as one simple object while others analyze the world as a complex made up of many parts. In ''scientific cosmology'' the world or universe is commonly defined as " e totality of all space and time; all that is, has been, and will be". '' Theories of modality'', on the other hand, talk of possible worlds as complete and consistent ways how things could have been. ''Phenomenology'', starting from the horizon of co-given objects present in the periphery of every experience, defines the world as the biggest horizon or the "horizon of all horizons". In ''philosophy of mind'', the world is commonly contrasted with the mind as that which is represented by the mind. ''Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930s German Experimental Aircraft
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 ''Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaman K-125
The Kaman K-225 is an American experimental helicopter developed by Kaman Aircraft. One example was modified to become the world's first gas turbine-powered helicopter. Design and development The K-125 was Charles Kaman's first helicopter, which utilized intermeshing rotors and Kaman's patented servo-flap stability control."Hall of Fame/Inventor Profile: Charles Kaman" The K-125 first flew on 15 January 1947. The K-190 and K-225 were an improved versions of the K-125, which first flew in April and July 1949 respectively. The U.S. Navy bought two and the Coast Guard one for $25,000 each. The United States Air Force evaluated one K-225 with the designation YH-22. A modified K-225 equipped with a Boeing 502 (YT50) turboshaft engine became the first gas turbine-powered helicopter in December 1951. This aircraft is now at the Smithsonian Institution in Washington, D.C. A standard K-225 is preserved in the New England Air Museum at Windsor Locks Connecticut. In 1953, the Turkish A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bramo Sh
Siemens-Schuckert (or Siemens-Schuckertwerke) was a German electrical engineering company headquartered in Berlin, Erlangen and Nuremberg that was incorporated into the Siemens AG in 1966. Siemens Schuckert was founded in 1903 when Siemens & Halske acquired Schuckertwerke. Subsequently, Siemens & Halske specialized in communications engineering and Siemens-Schuckert in power engineering and pneumatic instrumentation. During World War I Siemens-Schuckert also produced aircraft. It took over manufacturing of the renowned Protos vehicles in 1908. In World War II, the company had a factory producing aircraft and other parts at Monowitz near Auschwitz. There was a workers camp near the factory known as Bobrek concentration camp. The Siemens Schuckert logo consisted of an S with a smaller S superimposed on the middle with the smaller S rotated left by 45 degrees.Siemens used this as a theme for their logos with absorbed companies: Siemens & Halske's logo was a large S with a small s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siemens-Halske Sh 14
The Siemens-Halske Sh 14 was a seven-cylinder air-cooled radial engine for aircraft produced in Germany in the 1920s and 1930s. First run in 1928, it was rated at 93 kW (125 hp). Applications * Albatros L 82 * Ambrosini SAI.3 * Ambrosini SAI.10 * BFW M.23 * BFW M.29 * BFW M.35 * Blohm & Voss Ha 135 * Bücker Bü 133C Jungmeister * Command-Aire 3C3-BT * Doblhoff WNF 342 * Flettner Fl 185 * Flettner Fl 265 * Flettner Fl 282 The Flettner Fl 282 ''Kolibri'' ("Hummingbird") is a single-seat intermeshing rotor helicopter, or ''synchropter'', produced by Anton Flettner of Germany. According to Yves Le Bec, the Flettner Fl 282 was the world's first series production hel ... * Focke-Wulf C.20 * Focke-Wulf C.30 Heuschrecke * Focke-Wulf Fw 44 * Focke-Wulf Fw 61 * Heinkel He 72 * LWD Szpak * LWD Zuch * Nuri Demirağ Nu D.38 * Prudden XM-1 * Prudden TM-1 * RWD-17W * SIM-VIII, Rogozarski SIM-VIII * Rogozarski SIM-XI * SIM-II * VL Viima Specifications (Bramo Sh 14A-4) Se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flettner Fl 185
The Flettner Fl 185 was an experimental German gyrodyne developed by Anton Flettner, a machine which could fly both as a helicopter and as a gyroplane. Design and development This aircraft was developed in 1936 with support of the ''Kriegsmarine''. It was powered by a BMW-Bramo Sh 14 A radial piston engine with forced-air cooling, mounted at the nose. The engine drove a 12 m diameter main rotor and two auxiliary propellers mounted on outriggers attached to the fuselage. At take-off or when hovering, the auxiliary propellers worked in opposition to each other and served to cancel the torque of the main rotor, a function handled by a single, variable-pitch tail rotor on contemporary helicopters. In forward flight, however, both propellers worked to provide forward thrust while the rotor autorotated, as in a twin-engined autogyro. The landing gear consisted of a nose-wheel, two smaller stabilising wheels under the outriggers and a tail skid. Only one prototype was constructed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flettner
Anton Flettner, Flugzeugbau GmbH was a German helicopter and autogyro manufacturer during World War II, founded by Anton Flettner. Flettner aircraft included: *Flettner Fl 184 - Reconnaissance autogyro, prototype *Flettner Fl 185 - Reconnaissance helicopter, prototype *Flettner Fl 265 - Reconnaissance helicopter, prototype *Flettner Fl 282 ''Kolibri'' (Hummingbird) - Reconnaissance helicopter *Flettner Fl 339 - Reconnaissance helicopter, project * Flettner Gigant - Experimental helicopter Anton Flettner's interest in aerodynamics (specifically the Magnus effect, which produces a force from a cylinder rotating in a fluid flow) also led him to invent the Flettner rotor which he used to power a Flettner ship which crossed the Atlantic, and the Flettner ventilator which is still widely used as a cooling device for buses, vans and other commercial vehicles and which is based upon the Savonius principle. See also * Gyrodyne * List of RLM aircraft designations This is a list of aircra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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