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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 helicopter. Design and development The Fl 282 ''Kolibri'' was an improved version of the Flettner Fl 265 announced in July 1940, which pioneered the same intermeshing rotor configuration that the ''Kolibri'' used. It had a 7.7 litre displacement, seven-cylinder Siemens-Halske Sh 14 radial engine of mounted in the center of the fuselage, with a transmission mounted on the front of the engine from which a drive shaft ran to an upper gearbox, which then split the power to a pair of opposite-rotation drive shafts to turn the rotors. The Sh 14 engine was a venerable, tried-and-true design with low specific power output and low power/weight ratio (20.28 hp/L, 0.54 hp/lb) which could (anecdotally) run for up to 400 hours without major ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is an affinity group for contributors with shared goals within the Wikimedia movement. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sibling 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 Magazine, 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 outsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autorotation (helicopter)
Autorotation is a state of flight in which the Helicopter rotor, main rotor system of a helicopter or other rotary-wing aircraft turns by the action of air moving up through the rotor, as with an autogyro, rather than engine power driving the rotor.Igor Bensen, Bensen, Igor.How they fly – Bensen explains all" ''Gyrocopters UK''. Accessed: 10 April 2014. Quote: "air.. (is) deflected downward"Charnov, Bruce HCierva, Pitcairn and the Legacy of Rotary-Wing Flight ''Hofstra University''. Accessed: 22 November 2011. The term ''autorotation'' dates to a period of early helicopter development between 1915 and 1920, and refers to the rotors turning without the engine."Autorotation", ''Dictionary.com Unabridged (v 1.1)''. Random House, Inc. 17 April 2007 It is analo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sampson Air Force Base
Sampson Air Force Base is a closed United States military facility, last used by the United States Air Force Air Training Command as a Basic Military Training Center. It was closed in 1956 and put into caretaker status. As of at least the 2000s, parts of the facility have been converted to a civil picnic area called Sampson State Park. In addition, the United States Navy operates the Naval Undersea Warfare Center (NUWC) sonar test facility on a part of the facility. However, most of the former base is abandoned. History USNTS Sampson The facility was established initially by the United States Navy as a Naval Training Station (USNTS Sampson) in 1942. The station was named after Rear Admiral William T. Sampson. The Navy obtained 2,600 acres of former farmland and also vineyards for the facility on the east side of Seneca Lake, New York. Construction of the facility took 270 days to complete. Along with the training station, a 1,500-bed hospital was constructed. The mission ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Museum Of The United States Air Force
The National Museum of the United States Air Force (formerly the United States Air Force Museum) is the official museum of the United States Air Force located at Wright-Patterson Air Force Base, northeast of Dayton, Ohio. The NMUSAF is the oldest and largest military aviation museum in the world, with more than 360 aircraft and missiles on display. The museum is a central component of the National Aviation Heritage Area. The museum draws about a million visitors each year, making it one of the most frequently visited tourist attractions in Ohio. History The museum dates to 1923, when the Engineering Division at Dayton, Ohio, Dayton's McCook Field first collected technical artifacts for preservation. In 1927, it moved to then-Wright Field in a laboratory building. In 1932, the collection was named the Army Aeronautical Museum and placed in a Works Progress Administration, WPA building from 1935 until World War II. In 1948, the collection remained private as the Air Force ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Midland Air Museum
The Midland Air Museum (MAM) is situated just outside the village of Baginton in Warwickshire, England, and is adjacent to Coventry Airport. The museum includes the ''Sir Frank Whittle Jet Heritage Centre'' (named after the local aviation pioneer and inventor of the jet engine), where many exhibits are on display in a large hangar. It also has a small hangar, and a fenced-off green area where many aircraft are on display in the open. Aircraft on display The museum's two largest aircraft are an Avro Vulcan B.2 and an Armstrong Whitworth Argosy AW.650 (series 101). The restored Avro Vulcan is a delta-winged aircraft that was originally part of the V bomber force and could be equipped with nuclear missiles as part of Britain's role in NATO's nuclear deterrent force during the Cold War. It is on display near the museum's car park, together with an Avro Blue Steel missile, an early design format of such a nuclear missile, and a Boulton Paul BP.111A, an experimenta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mühldorf
Mühldorf am Inn (, ; Central Bavarian: ''Muihdorf am Inn'') is a Town#Germany, town in Bavaria, Germany, and the capital of the Mühldorf (district), district Mühldorf on the river Inn (river), Inn. It is located at , and had a population of about 17,808 in 2005. The 2022 census counted 21,917 residents. History During the Middle Ages, the town and castle were an alod of the Luchen family. On 28 October 1287, Rapoto Luchen announced that he had entered an agreement with Archbishop Rudolph of Salzburg to hand over the alod, become the archbishop's ministerialis, and thereafter run the lands as a fief of the Prince-Archbishops of Salzburg. On 28 September 1322, the decisive Battle of Mühldorf was fought here between Bavaria and Salzburg. Before the battle, the Prince-Archbishop of Salzburg knighted several of the burghers of the town. In 1802, Mühldorf became part of Bavaria.Heinz Dopsch u.a.: ''Mühldorf a. Inn - Salzburg in Bayern: 935-1802-2002'' During World War II, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flettner Fl 282 Midland Air Museum
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hangar
A hangar is a building or structure designed to hold aircraft or spacecraft. Hangars are built of metal, wood, or concrete. The word ''hangar'' comes from Middle French ''hanghart'' ("enclosure near a house"), of Germanic origin, from Frankish *''haimgard'' ("home-enclosure", "fence around a group of houses"), from *''haim'' ("home, village, hamlet") and ''gard'' ("yard"). The term, ''gard'', comes from the Old Norse ''garðr'' ("enclosure, garden"). Hangars are used for protection from the weather, direct sunlight and for maintenance, repair, manufacture, assembly and storage of aircraft. History The Wright brothers stored and repaired their aircraft in a wooden hangar constructed in 1902 at Kill Devil Hills in North Carolina for their Glider aircraft, glider. After completing design and construction of the ''Wright Flyer'' in Ohio, the brothers returned to Kill Devil Hills only to find their hangar damaged. They repaired the structure and constructed a new workshop while t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cruiser
A cruiser is a type of warship. Modern cruisers are generally the largest ships in a fleet after aircraft carriers and amphibious assault ships, and can usually perform several operational roles from search-and-destroy to ocean escort to sea denial. The term "cruiser", which has been in use for several hundred years, has changed its meaning over time. During the Age of Sail, the term ''cruising'' referred to certain kinds of missions—independent scouting, commerce protection, or raiding—usually fulfilled by frigates or sloop-of-war, sloops-of-war, which functioned as the ''cruising warships'' of a fleet. In the middle of the 19th century, ''cruiser'' came to be a classification of the ships intended for cruising distant waters, for commerce raiding, and for scouting for the battle fleet. Cruisers came in a wide variety of sizes, from the medium-sized protected cruiser to large armored cruisers that were nearly as big (although not as powerful or as well-armored) as a pre- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reconnaissance
In military operations, military reconnaissance () or scouting is the exploration of an area by military forces to obtain information about enemy forces, the terrain, and civil activities in the area of operations. In military jargon, reconnaissance is abbreviated to ''recce'' (in British, Canadian, Australian English) and to ''recon'' (in American English), both derived from the root word ''reconnoitre'' / ''reconnoitering''. The types of reconnaissance include patrolling the local area of operations and long-range reconnaissance patrols, which are tasks usually realized in the United States of America by U.S. Army Rangers, cavalry scouts, and military intelligence specialists, using navy ships and submarines, Aerial reconnaissance, reconnaissance aircraft, satellites to collect raw intelligence; and establishing observation posts. Moreover, espionage is different from reconnaissance, because spies work as civilians in enemy territory. Etymology The word is derived from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rangsdorf
Rangsdorf is a municipality in the district of Teltow-Fläming in Brandenburg in Germany. It has an airfield p to 1940 a genuine commercial airportfrom where on 20 July 1944 Claus Schenk Graf von Stauffenberg took off on his fateful attempt to assassinate German leader Adolf Hitler at his military headquarters in East Prussia, the ''Wolfsschanze'' (Wolf's Lair). Demography File:Bevölkerungsentwicklung Rangsdorf.pdf, Development of Population since 1875 within Current Boundaries (Blue Line: Population; Dotted Line: Comparison to Population Development of Brandenburg state; Grey Background: Time of National Socialist rule; Red Background: Time of Communist rule) File:Bevölkerungsprognosen Rangsdorf.pdf, Recent Population Development and Projections (Population Development before Census 2011 (blue line); Recent Population Development according to the Census in Germany A national census in Germany (, ) was held every five years from 1875 to 1910. After the World Wars, only a fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
