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Czerwiński-Shenstone Harbinger
The Czerwiński-Shenstone Harbinger, aka the Shenstone-Czerwiński Harbinger or the Shenstone Harbinger was a Canadian high performance tandem seat sailplane designed in Canada. Only two were built, one in the UK and one in Canada. The latter did not fly until 1975, being under construction for 26 years; the former remained active until at least 1994. Design and development In 1947 the British Gliding Association held a competition for a two-seat glider design. The tandem seat Harbinger was designed jointly by Waclaw Czerwiński, who had already developed several gliders in Poland before World War II, and Canadian Beverley Shenstone, who had worked in Germany on the Junkers Ju 52 then later, in the UK, on the Spitfire. The Harbinger came fifth in the competition, which the Kendall Crabpot won. The Harbinger was, apart from its wing mountings, an all wood aircraft. It had braced, high-set demountable wings each built around a single main spar. These were plywood cover ... [...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] |
Wing Tips
A wing tip (or wingtip) is the part of the wing that is most distant from the fuselage of a fixed-wing aircraft. Because the wing tip shape influences the size and drag of the wingtip vortices, tip design has produced a diversity of shapes, including: * Squared-off * Aluminium tube bow * Rounded * Hoerner style * Winglets * Drooped tips * Raked wingtips * Tip tanks * Sails * Fences * End plates Winglets have become popular additions to high speed aircraft to increase fuel efficiency by reducing drag from wingtip vortices. In lower speed aircraft, the effect of the wingtip shape is less apparent, with only a marginal performance difference between round, square, and Hoerner style tips The slowest speed aircraft, STOL aircraft, may use wingtips to shape airflow for controllability at low airspeeds. Wing tips are also an expression of aircraft design style, so their shape may be influenced by marketing considerations as well as by aerodynamic requirements. Wing tips are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lasham
Lasham is a village and civil parish in the East Hampshire district of Hampshire, England. It is northwest of Alton and north of Bentworth, just off the A339 road. The parish covers an area of and has an average elevation of above sea level. The nearest railway station is Alton, southeast of the village. Lasham formerly had its own railway station, Bentworth and Lasham, on the Basingstoke and Alton Light Railway until the line's closure in 1936. According to the 2011 census, the village had a population of 176. History The village name has been spelled in various ways, including Esseham (11th century), Lessham (12th century), and Lesseham or Lassham (14th century). Lasham was first mentioned in the Domesday Survey of 1086 by William I (the conqueror) as an alod, and was then assessed at two and a half hides. The Royal Navy used the village name for a Ham class minesweeper, HMS Lasham, which was operational from 1954 to 1981. Lasham Airfield Lasham Airfield was constru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doncaster
Doncaster (, ) is a city in South Yorkshire, England. Named after the River Don, it is the administrative centre of the larger City of Doncaster. It is the second largest settlement in South Yorkshire after Sheffield. Doncaster is situated in the Don Valley on the western edge of the Humberhead Levels and east of the Pennines. At the 2021 census, the city had a population of 308,100, while its built-up area had a population of 158,141 at the 2011 census. Sheffield lies south-west, Leeds north-west, York to the north, Hull north-east, and Lincoln south-east. Doncaster's suburbs include Armthorpe, Bessacarr and Sprotbrough. The towns of Bawtry, Mexborough, Conisbrough, Hatfield and Stainforth, among others, are only a short distance away within the metropolitan borough. The towns of Epworth and Haxey are a short distance to the east in Lincolnshire, and directly south is the town of Harworth Bircotes in Nottinghamshire. Also, within the city's vicinity are Barnsley, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hucknall
Hucknall, formerly Hucknall Torkard, is a market town in the Ashfield district of Nottinghamshire, England. It lies 7 miles north of Nottingham, 7 miles south-east of Kirkby-in-Ashfield, 9 miles from Mansfield and 10 miles south of Sutton-in-Ashfield. It is the second largest town in the Ashfield district after Sutton-in-Ashfield. Hucknall is north-west of Nottingham, on the west bank of the Leen Valley, on land which rises from the Trent Valley in the south and extends northwards to Kirkby-in-Ashfield. The Whyburn or Town Brook flows through the town centre. Farleys Brook marks its southern boundary. Due to the mass amount of housing and industrial estates along the southside of the town. Hucknall is contiguous with the wider City of Nottingham with the suburbs of Bulwell and Bestwood Village both to the south and southeast. The town's highest point is Long Hill, at above sea level, with views over the city and Trent Valley, which descends to 22–24 metres (72–79&nbs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Center Of Pressure (fluid Mechanics)
In fluid mechanics, the center of pressure is the point where the total sum of a pressure field acts on a body, causing a force to act through that point. The total force vector acting at the center of pressure is the surface integral of the pressure vector field across the surface of the body. The resultant force and center of pressure location produce an equivalent force and moment on the body as the original pressure field. Pressure fields occur in both static and dynamic fluid mechanics. Specification of the center of pressure, the reference point from which the center of pressure is referenced, and the associated force vector allows the moment generated about any point to be computed by a translation from the reference point to the desired new point. It is common for the center of pressure to be located on the body, but in fluid flows it is possible for the pressure field to exert a moment on the body of such magnitude that the center of pressure is located outside the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Hucklow
Great Hucklow (Old English ''Hucca's burial mound'') is a small village and civil parish in the Derbyshire Peak District which nestles under Hucklow Edge between the villages of Tideswell and Bradwell. It has a population of about 100, including Foolow , Grindlow plus Little Hucklow and being measured at 427 in the 2011 Census. In the village, there is a thriving primary school, which is located up a short lane (School Lane), under the edge, and a pub, the Queen Anne. It had a theatre for 40 years, which was run by L. du Garde Peach and the actors and staff were from the local area. The first production (The Merchant of Venice, Shakespeare) was in 1927 staged in the Hucklow Holiday Homes. The first set of plays in the New Play House was in 1938, with four one act plays written by Peach. The New Play House was in a converted lead mining building (known locally as cupolas from the lead smelting furnace). The first 200-second hand seats cost 1 shilling and 9 pence each. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing Skid
Landing is the last part of a flight, where a flying animal, aircraft, or spacecraft returns to the ground. When the flying object returns to water, the process is called alighting, although it is commonly called "landing", "touchdown" or "splashdown" as well. A normal aircraft flight would include several parts of flight including taxi, takeoff, climb, cruise, descent and landing. Aircraft Aircraft usually land at an airport on a firm runway or helicopter landing pad, generally constructed of asphalt concrete, concrete, gravel or grass. Aircraft equipped with pontoons (floatplane) or with a boat hull-shaped fuselage (a flying boat) are able to land on water. Aircraft also sometimes use skis to land on snow or ice. To land, the airspeed and the rate of descent are reduced such that the object descends at a low enough rate to allow for a gentle touch down. Landing is accomplished by slowing down and descending to the runway. This speed reduction is accomplished by reduc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevator (aircraft)
Elevators are flight control surfaces, usually at the rear of an aircraft, which control the aircraft's pitch, and therefore the angle of attack and the lift of the wing. The elevators are usually hinged to the tailplane or horizontal stabilizer. They may be the only pitch control surface present, and are sometimes located at the front of the aircraft (early airplanes) or integrated into a rear "all-moving tailplane", also called a slab elevator or stabilator. Elevator control effectiveness The elevator is a usable up and down system that controls the plane, horizontal stabilizer usually creates a ''downward'' force which balances the nose down moment created by the wing lift force, which typically applies at a point (the wing center of lift) situated aft of the airplane's center of gravity. The effects of drag and changing the engine thrust may also result in pitch moments that need to be compensated with the horizontal stabilizer. Both the horizontal stabilizer and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudder
A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, aircraft, or other vehicle that moves through a fluid medium (generally aircraft, air or watercraft, water). On an aircraft the rudder is used primarily to counter adverse yaw and p-factor and is not the primary control used to turn the airplane. A rudder operates by redirecting the fluid past the hull (watercraft), hull or fuselage, thus imparting a turning or yaw (rotation), yawing motion to the craft. In basic form, a rudder is a flat plane or sheet of material attached with hinges to the craft's stern, tail, or after end. Often rudders are shaped so as to minimize Drag (physics), hydrodynamic or aerodynamic drag. On simple watercraft, a tiller—essentially, a stick or pole acting as a lever arm—may be attached to the top of the rudder to allow it to be turned by a helmsman. In larger vessels, cables, pushrods, or hydraulics may be used to link rudders to steering wheels. In typical air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Canopy
An aircraft canopy is the transparent enclosure over the cockpit of some types of aircraft. An aircraft canopy provides a controlled and sometimes pressurized environment for the aircraft's occupants, and allows for a greater field of view over a traditional flight deck. A canopy's shape is a compromise designed to minimize aerodynamic drag, while maximizing visibility for pilots and other crewmembers. History Very early aircraft had no canopies. The pilots were exposed to the wind and weather, although most flying was done in good weather. Through World War I most aircraft had no canopy, although they often had a small windshield to deflect the prop wash and wind from hitting the pilot in the face. In the 1920s and 1930s, the increasing speed and altitude of airplanes necessitated a fully enclosed cockpit and canopies became more common. Early canopies were made of numerous pieces of flat glass held in position by a frame and muntins. The muntins reduced visibility, which w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lift Strut
In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of strut, which act in compression or tension as the need arises, and/or wires, which act only in tension. In general, bracing allows a stronger, lighter structure than one which is unbraced, but external bracing in particular adds drag which slows down the aircraft and raises considerably more design issues than internal bracing. Another disadvantage of bracing wires is that they require routine checking and adjustment, or rigging, even when located internally. During the early years of aviation, bracing was a universal feature of all forms of aeroplane, including the monoplanes and biplanes which were then equally common. Today, bracing in the form of lift struts is still used for some light commercial designs where a high wing and light weight are more imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
