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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] |
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] |
British European Airways
British European Airways (BEA), formally British European Airways Corporation, was a British airline which existed from 1946 until 1974. BEA operated to Europe, North Africa and the Middle East from airports around the United Kingdom. The airline was also the largest UK domestic operator, serving major British cities, including London, Manchester, Glasgow, Edinburgh and Belfast, as well as areas of the British Isles such as the Highlands and Islands of Scotland, the Channel Islands and the Isle of Man.''Classic Aircraft (Gone but not forgotten ... BEA: Highlands and Islands – Never on a Sunday)'', Vol. 45, No. 6, p. 46, Ian Allan Publishing, Hersham, June 2012 BEA also operated a network of internal German routes between West Berlin and West Germany as part of the Cold War agreements regulating air travel within Germany.''Classic Aircraft (Gone but not forgotten ... BEA: Internal German Services – Berlin-bound)'', Vol. 45, No. 6, p. 51, Ian Allan Publishing, Hersham, June ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kirbymoorside
Kirkbymoorside () is a market town and civil parish in the Ryedale district in North Yorkshire, England. It is north of York, It is also midway between Pickering and Helmsley, on the edge of the North York Moors National Park. It had a population of 3,040 in the 2011 census. History Kirkbymoorside is noted as ''Chirchebi'' in the Domesday Book of 1086. It has served as a trading hub at least since 1254, when it became a market town. There are two ancient coaching inns extant, the ''Black Swan'' with its carved porch, and the cruck-framed ''George and Dragon'', which originated in the 13th century. The Georgian façades point to later periods of commercial prosperity on the coaching route between York and Scarborough. Some Ancient British, Viking and Anglo-Saxon remains have been found in the vicinity. The Norman baron Robert de Stuteville built a wooden moated castle on Vivers Hill. The estate passed to the Wake family in the 13th century, who brought prosperity to the town. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Cranfield University
, mottoeng = After clouds light , established = 1946 - College of Aeronautics 1969 - Cranfield Institute of Technology (gained university status by royal charter) 1993 - Cranfield University (adopted current name) , type = Public research university , chancellor = Dame Deirdre Hutton , vice_chancellor = Karen Holford , administrative_staff = 1,800 , students = ()(all postgraduates) , undergrad = , postgrad = , city = Cranfield, BedfordshireShrivenham, OxfordshireEngland , campus = Rural (both) , former_names = Cranfield Institute of TechnologyCollege of Aeronautics , colours = , athletics = , affiliations = ACUPEGASUSEQUISAACSBAMBA M5 UniversitiesUniversities UK , website = https://www.cranfield.ac.uk/ , logo = , footnotes = Cranfield University is a British postgraduate public research university specialising in science, engineering, design, technology and management. Cranfield was founded as the College of Aeronautics (CoA) in 1946. Through the 195 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabbatical
A sabbatical (from the Hebrew: (i.e., Sabbath); in Latin ; Greek: ) is a rest or break from work. The concept of the sabbatical is based on the Biblical practice of ''shmita'' (sabbatical year), which is related to agriculture. According to , Jews in the Land of Israel must take a year-long break from working the fields every seven years. Starting with Harvard University in 1880, many universities and other institutional employers of scientists, physicians, and academics offer the opportunity to qualify for paid sabbatical as an employee benefit, called ''sabbatical leave''. Early academic sabbatical policies were designed to aid their faculty in resting and recovering, but were also provided in order to facilitate "advancements in knowledge in vogue elsewhere...an intellectual and practical necessity" for both the professors and university education more broadly. Present day academic sabbaticals typically excuse the grantee from day to day teaching and departmental duties, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Alberta
The University of Alberta, also known as U of A or UAlberta, is a public research university located in Edmonton, Alberta, Canada. It was founded in 1908 by Alexander Cameron Rutherford,"A Gentleman of Strathcona – Alexander Cameron Rutherford", Douglas R. Babcock, 1989, The University of Calgary Press, 2500 University Drive NW, Calgary, Alberta, Canada, the first premier of Alberta, and Henry Marshall Tory,"Henry Marshall Tory, A Biography", originally published 1954, current edition January 1992, E.A. Corbett, Toronto: Ryerson Press, the university's first president. It was enabled through the Post-secondary Learning Act''.'' The university is considered a "comprehensive academic and research university" (CARU), which means that it offers a range of academic and professional programs that generally lead to undergraduate and graduate level credentials. The university comprises four campuses in Edmonton, an Augustana Campus in Camrose, and a staff centre in downtown Cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Marsden
David Charles Marsden (born in Toronto, Ontario) is a Canadian radio broadcaster. Initially operating under the on-air name of Dave Mickie, with much fast-talking patter, he was a notable Toronto DJ of the 1960s who attracted critical attention from Marshall McLuhan. Reinventing himself, and using his real name of David Marsden, he became a much more laid-back free-form DJ, notably at CHOM in Montreal and CHUM-FM in Toronto in the 1970s. He then became the driving force behind Brampton, Ontario radio station CFNY in the 1980s, becoming an influential figure in the Canadian music industry by giving many Canadian and international alternative rock artists major Canadian radio exposure. During his stint at CFNY, his nickname (often referred to on-air) was "The Mars Bar". Marsden currently runs the on-air streaming service nythespirit.com. Early career Under the name Dave Mickie, he was the original manager of The Revols, a Stratford, Ontario rock band in the late 1950s whose famo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spoiler (aeronautics)
In aeronautics, a spoiler (sometimes called a lift spoiler or lift dumper) is a device which intentionally reduces the lift (force), lift component of an airfoil in a controlled way. Most often, spoilers are plates on the top surface of a wing that can be extended upward into the airflow to ''spoil'' the streamline flow. By so doing, the spoiler creates a controlled Stall (flight), stall over the portion of the wing behind it, greatly reducing the lift of that wing section. Spoilers differ from air brake (aeronautics), airbrakes in that airbrakes are designed to increase drag without disrupting the lift distribution across the wing span, while spoilers disrupt the lift distribution as well as increasing drag. Spoilers fall into two categories: those that are deployed at controlled angles during flight to increase descent rate or control roll, and those that are fully deployed immediately on landing to greatly reduce lift ("lift dumpers") and increase drag. In modern fly-by- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass-fibre
Fiberglass (American English) or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth. The plastic matrix may be a thermoset polymer matrix—most often based on thermosetting polymers such as epoxy, polyester resin, or vinyl ester resin—or a thermoplastic. Cheaper and more flexible than carbon fiber, it is stronger than many metals by weight, non-magnetic, non-conductive, transparent to electromagnetic radiation, can be molded into complex shapes, and is chemically inert under many circumstances. Applications include aircraft, boats, automobiles, bath tubs and enclosures, swimming pools, hot tubs, septic tanks, water tanks, roofing, pipes, cladding, orthopedic casts, surfboards, and external door skins. Other common names for fiberglass are glass-reinforced plastic (GRP), glass-fiber reinforced plastic (GFRP) or GFK ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aluminum Alloy
An aluminium alloy (or aluminum alloy; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable. About 85% of aluminium is used for wrought products, for example rolled plate, foils and extrusions. Cast aluminium alloys yield cost-effective products due to the low melting point, although they generally have lower tensile strengths than wrought alloys. The most important cast aluminium alloy system is Al–Si, where the high levels of silicon (4–13%) contribute to give good casting characteristics. Aluminium alloys are widely used in engineering structures and components where light weight or corrosion resistance is required.I. J. Polmear, ''Light Alloys'', Arnold, 1995 Alloys c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cranfield
Cranfield is a village and civil parish in the west of Bedfordshire, England, situated between Bedford and Milton Keynes. It had a population of 4,909 in 2001. increasing to 5,369 at the 2011 Census. The parish is in Central Bedfordshire unitary authority. It is best known for being the home of Cranfield University and Cranfield Airport (an airfield). The hamlet of Bourne End is located just north of Cranfield, and is part of the civil parish. Wharley End was a separate settlement, but now forms the northern part of Cranfield village, by the university. Amenities Cranfield has two public houses, a football club, coffee shop, dog grooming salon, hairdressers, barbers, several take-away restaurants, one small supermarket and two car dealerships. There is also a surgery and dentist's practice along with a pharmacy. Cranfield has a university, three schools, three parks and a multi-use games area. The village Post Office is now contained within The Co-operative Group store; pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
