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Marsden Gemini
The Marsden Gemini is a Canadian mid-wing, T-tailed, two-seats in side-by-side configuration, experimental research glider that was designed and constructed by David Marsden at the University of Alberta, first flying in 1973. Design and development The Gemini was designed to explore the use of flaps to create a variable geometry sailplane that would be optimized for both low speed thermalling flight and also high speed gliding between thermals. The aircraft was predominantly made from aluminium, with some stainless steel used for the wing ribs, controls and fittings. The two-place side-by-side cockpit was made from fibreglass. Its four-piece span high aspect ratio wing employed a modified Wortmann FX-61-163/35SF airfoil. The Fowler flaps occupied the entire trailing edge of the wing and accounted for 35% of the wing chord. In cruise the flaps were retracted, reducing the wing area. While climbing, the flaps were extended, producing a high lift coefficient of 2.2. For glide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister 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'' 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 outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trailing Edge
The trailing edge of an aerodynamic surface such as a wing is its rear edge, where the airflow separated by the leading edge meets.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 521. Aviation Supplies & Academics, 1997. Essential flight control surfaces are attached here to control the direction of the departing air flow, and exert a controlling force on the aircraft. Such control surfaces include ailerons on the wings for roll control, elevators on the tailplane controlling pitch, and the rudder on the fin controlling yaw. Elevators and ailerons may be combined as elevons on tailless aircraft. The shape of the trailing edge is of prime importance in the aerodynamic function of any aerodynamic surface. George Batchelor has written about: :“ ... the remarkable controlling influence exerted by the sharp trailing edge of an aerofoil on the circulation.”Batchelor, G. K. (1967), ''An Introduction to Fluid Dynamics'', p.438, Cambridge University Press. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Gliders
This is a list of gliders/sailplanes of the world, (this reference lists all gliders with references, where available) Note: Any aircraft can glide for a short time, but gliders are designed to glide for longer. By nationality *List of American gliders *List of Argentine gliders * List of Australian gliders *List of Austrian gliders *List of Belgian gliders *List of Brazilian gliders *List of British gliders * List of Bulgarian gliders *List of Canadian gliders *List of Chinese gliders *List of Czechoslovak gliders *List of Danish gliders *List of Dutch gliders * List of Estonian gliders *List of Finnish gliders *List of French gliders *List of German gliders *List of Greek gliders *List of Hungarian gliders *List of Indian gliders *List of Iranian gliders *List of Irish gliders *List of Italian gliders *List of Japanese gliders *List of Latvian gliders *List of Lithuanian gliders *List of New Zealand gliders *List of Philippines gliders *List of Polish gliders *List of Portugu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SZD-19 Zefir
The SZD-19 Zefir (''Szybowcowy Zakład Doświadczalny'' - Glider Experimental Works) is a single-seat glider aircraft that was designed and built in Poland from 1957. Although they all bore the same name, the different versions of Zefir were actually quite different gliders in terms of materials used, design and performance. What unified them most was the person of the lead designer - Bugumił Szuba and the use of large Fowler flaps to get superior (for the era) performance both at low and high-speed flight. The Zefir series (in particular Zefir-3, with its L/D of 42+) is perhaps the ultimate design of the wooden glider construction era. Intended to replace the SZD-8 Jaskółka as the Polish team mount at the World Gliding Championships in 1958 in Leszno, the SZD-19 Zefir was a high-wing glider with a wooden and glass-fibre fuselage, retractable undercarriage and all-metal wings incorporating hydraulically actuated flaps. The first prototype SZD-19X Zefir flew on 31 December ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Sigma Sigma
The Sigma is an experimental glider developed in Britain from 1966 by a team led by Nicholas Goodhart. After disappointing performance during flight testing the Sigma was passed on to a Canadian group which carried out modifications, making the Sigma more competitive. Design and development Designed to compete in the 1970 World Championships, the team aimed to develop a wing that would climb well through a high lift coefficient and a large wing area, but equally had the "maximum possible reduction of area for cruise at low lift coefficients". At the same time for the minimum possible drag they aimed for "extensive" laminar flow. To achieve this they employed flaps that would alter both wing area and wing camber. Based on analysis of the nature of thermals encountered in cross-country flying, they reasoned that by having a slow turning circle, their sailplane could stay close to the central (and strongest) part of the thermal and gain maximum benefit. Its unusual feature is it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LET L-13 Blaník
The L-13 Blaník is a two-seater trainer Glider (sailplane), glider produced by Let Kunovice since 1956. It is the most numerous and widely used glider in the world. In United States Air Force Academy service, it is designated TG-10C and was used for basic flight training up to 2012. Design * Fuselage of semi-monocoque construction employing longerons and bulkheads, with an ovoid cross-section. The cockpit is covered with a two-part acrylic glass canopy. * Trapezoidal single-taper wings with forward (negative) sweep, single-spar, all-metal construction. Metal ‘salmon’ tips. Flaps and ailerons have a metal frame and are covered in fabric. Metal Spoiler (aeronautics), DFS type spoilers on the upper and lower wing surfaces. * The horizontal tail surfaces fold up parallel to the fin for transportation and storage. * The elevator and rudder are metal frames covered in fabric. * The main single-wheel landing gear is sprung with an oleo-pneumatic shock absorber. When retracted, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beatty-Johl BJ-2 Assegai
The Beatty-Johl BJ-2 Assegai was a single seat, high performance competition glider built in South Africa in the early 1960s. Only one was built; it was optimised for South African conditions and performed well there, winning two nationals and setting several records, but was less successful under European conditions at the 1965 World Gliding Championships. Design and development The BJ-2 was a successor to the BJ-1, a 60 ft (18.3 m) span glider on which design began in South Africa in 1945 but abandoned before completion as it became clear that the new laminar flow airfoil sections offered better performance. The BJ-2 used one of the 65 series airfoils in conjunction with Fowler flaps. Its design, led by W.A.T. Johl, concentrated on high cross country glide speeds, achieved via a high wing loading and low camber, important in South African gliding conditions with strong thermals and long flights between them. Design work started in 1955 but the BJ-2 was not flown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barringer Trophy
The Lewin B. Barringer Memorial Trophy was established by the will of Lewin Barringer in 1948. The original rules specified that the trophy would be awarded for the longest distance soaring flight from any type of launching method other than airplane tow. The trophy would become the permanent property of any pilot who won it three times in succession. History Paul Bikle was the first pilot to win the Trophy three times in succession. He subsequently donated the trophy back to the Soaring Society of America as a perpetual trophy. In 1957 the SSA Directors, with Bikle's approval, changed the rules to allow for any type of launch method and include any flights, other than those flown at the US National Contest. Recipients Recipients of this trophy, from 1948 to present, include: See also * List of aviation awards This list of aviation awards is an index to articles about notable awards given in the field of aviation. It includes a list of awards for winners of competitions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amarillo, Texas
Amarillo ( ; Spanish for "yellow") is a city in the U.S. state of Texas and the seat of Potter County. It is the 14th-most populous city in Texas and the largest city in the Texas Panhandle. A portion of the city extends into Randall County. The estimated population of Amarillo was 200,393 as of April 1, 2020. The Amarillo- Pampa-Borger combined statistical area had an estimated population of 308,297 as of 2020. The city of Amarillo, originally named Oneida, is situated in the Llano Estacado region.Rathjen, Fredrick W. ''The Texas Panhandle Frontier'' (1973). pg. 11. The University of Texas Press. . The availability of the railroad and freight service provided by the Fort Worth and Denver City Railroad contributed to the city's growth as a cattle-marketing center in the late 19th century.. Retrieved on January 25, 2007. Amarillo was once the self-proclaimed "Helium Capital of the World" for having one of the country's most productive helium fields. The city is also known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zapata, Texas
Zapata is a census-designated place (CDP) in and the county seat of Zapata County, Texas, United States. The population was 14,018 at the 2010 census. As an unincorporated community, Zapata has no municipal government but like all 254 Texas counties has four elected county commissioners chosen by single-member districts and a countywide elected administrative judge. History Zapata was named for José Antonio de Zapata (died 1839), the revolutionary commander who served in the cavalry of the Republic of the Rio Grande, of which the town was a part. The town was relocated to higher ground in 1953 prior to the completion of Falcon Dam, which left the original town center beneath the waters of Falcon Lake. Geography Zapata is located at (26.906244, -99.270007). According to the United States Census Bureau, the CDP has a total area of , of which, of it is land and is water. Recreation The city is located right on Falcon International Reservoir which is at the center of multi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wichita, Kansas
Wichita ( ) is the largest city in the U.S. state of Kansas and the county seat of Sedgwick County, Kansas, Sedgwick County. As of the 2020 United States census, 2020 census, the population of the city was 397,532. The Wichita metro area had a population of 647,610 in 2020. It is located in south-central Kansas on the Arkansas River. Wichita began as a trading post on the Chisholm Trail in the 1860s and was incorporated as a city in 1870. It became a destination for Cattle drives in the United States, cattle drives traveling north from Texas to Kansas railroads, earning it the nickname "Cowtown".Miner, Prof. Craig (Wichita State Univ. Dept. of History), ''Wichita: The Magic City'', Wichita Historical Museum Association, Wichita, KS, 1988Howell, Angela and Peg Vines, ''The Insider's Guide to Wichita'', Wichita Eagle & Beacon Publishing, Wichita, KS, 1995 Wyatt Earp served as a police officer in Wichita for around one year before going to Dodge City, Kansas, Dodge City. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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