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Lee-Richards Annular Monoplane
During the pioneer years before the First World War, Cedric Lee and G. Tilghman Richards in the UK built and flew a series of aircraft having a novel flat ring-shaped or annular wing. They built both biplane and monoplane types, and in 1913 their first monoplane proved to be an early example of a statically stable aircraft. History Annular biplane Following a series of patents on circular-wing aircraft taken out by Williband Franz Zelger and Isaac Henry Storey, the boiler engineer John George Aulsebrook Kitchen built an annular-wing biplane but was unable to fly it. He later took out his own patent, while he and Storey also jointly patent an entirely different type of multiplane.Jarrett (1976) Kitchen subsequently sold both the patent and the machine to Cedric Lee, who would also later acquire Zelger's patent. Tilghman Richards joined Lee in 1910 and together they finished the aeroplane, fitting a Gnome Omega engine in the front. The machine is known variously as the Kitchen ... [...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] |
Royal Naval Volunteer Reserve
Royal may refer to: People * Royal (name), a list of people with either the surname or given name * A member of a royal family Places United States * Royal, Arkansas, an unincorporated community * Royal, Illinois, a village * Royal, Iowa, a city * Royal, Missouri, an unincorporated community * Royal, Nebraska, a village * Royal, Franklin County, North Carolina, an unincorporated area * Royal, Utah, a ghost town * Royal, West Virginia, an unincorporated community * Royal Gorge, on the Arkansas River in Colorado * Royal Township (other) Elsewhere * Mount Royal, a hill in Montreal, Canada * Royal Canal, Dublin, Ireland * Royal National Park, New South Wales, Australia Arts, entertainment, and media * ''Royal'' (Jesse Royal album), a 2021 reggae album * ''The Royal'', a British medical drama television series * ''The Royal Magazine'', a monthly British literary magazine published between 1898 and 1939 * ''Royal'' (Indian magazine), a men's lifestyle bimonthly * Royal Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edwards Rhomboidal
The Edwards Rhomboidal was an early British aircraft of extremely unorthodox configuration designed by E.W. Edwards. Design and development The Edwards Rhomboidal was an annular wing biplane with identical upper and lower surfaces consisting of four surfaces in a diamond arrangement, the aft wings being of three times the chord of the forward wings. It had been arrived at as a result of successful experiments with a rubber-driven model monoplane. The main structure of the aircraft was formed by a pair of triangular section wire-braced trusses arranged one above another, connected by five sets of paired struts. Each girder bore a pair of substantial flexibly mounted struts extending outwards, the wings being tensioned between the ends of the longitudinal girders and the outer ends of the struts by means of cables which formed the wing leading edges. The trailing edges were under less tension, the intention being that the wings would automatically deform to spread flight loads ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Closed Wing
A closed wing is a wing that effectively has two main planes which merge at their ends so that there are no conventional wing tips. Closed wing designs include the annular wing (commonly known as the cylindrical or ring wing), the joined wing, the box wing and spiroid tip devices. Like many wingtip devices, the closed wing aims to reduce the wasteful effects associated with wingtip vortices which occur at the tips of conventional wings. Although the closed wing has no unique claim on such benefits, many closed wing designs do offer structural advantages over a conventional cantilever monoplane. Characteristics Wingtip vortices form a major component of wake turbulence and are associated with induced drag, which is a significant contributor to total drag in most regimes. A closed wing avoids the need for wingtips and thus might be expected to reduce wingtip drag effects. In addition to potential structural advantages over open cantilevered wings, closed wing surfaces have so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circular Wing
A circular wing is a disc-shaped wing having the outer planform of a circle. If the aircraft has no fuselage or tail the disc-shaped craft is sometimes described as a ''flying saucer''. If the entire disc rotates it is called a ''disc wing''. Disc-shaped aircraft development dates back to before World War II. A number of disc-shaped aircraft have been proposed over the years, and a few have been built. Circular wing aircraft Nemeth Umbrella Plane In 1934, at Miami University (of Ohio), an aircraft called the Nemeth Umbrella Plane (aka Roundwing) was tested. (''Nemeth'' is sometimes spelled ''Nuneth''.) This aircraft had a parasol wing of circular form above a conventional fuselage and tail, and it was powered by propeller in a tractor configuration. Sack AS.6 During World War II, a number of disc-shaped aircraft were proposed by aircraft designers in Germany. One of the few to make it further than the drawing board was the Sack AS-6, an experimental light plane with a round-win ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chakram
Chakram ( sa, , script=latn; pa, , script=latn) is a throwing weapon from the Indian subcontinent. One of its major purposes is to protect the turban and the head from sword/melee attacks. It is circular with a sharpened outer edge and a diameter of . It is also known as chalikar meaning "circle", and was sometimes referred to in English writings as a "war- quoit". The Chakram is primarily a throwing weapon but can also be used hand-to-hand. A smaller variant called ''chakri'' is worn on the wrist. A related weapon is the ''chakri dong'', a bamboo staff with a chakri attached at one end. History The earliest references to the chakram come from the 5th century BCE Indian epics ''Mahabharata'' and ''Ramayana'' where the Sudarshana Chakra is the weapon of the god Vishnu. Contemporaneous Tamil poems from the 2nd century BCE record it as ''thikiri'' (திகிரி). Chakra-dhāri ("chakram-wielder" or "disc-bearer") is a name for Krishna. The chakram was later used extensively ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerobie
An Aerobie is a flying ring used in a manner similar to a chakram or flying disc (Frisbee), for recreational catches between two or more individuals. Its ring shape of only about thickness"The Science of Aerobie Sport Toys", #1 , accessed June 26, 2008 makes the Aerobie lighter and more stable in flight than a disc. It can be bent to tune it for straighter flight. Since it has very low drag and good stability, it can be thrown much farther than a flying disc. The Aerobie was used to set two former world records for thrown objects. Designed in 1984 by |
Gnome Lambda
The Gnome 7 Lambda was a French designed, seven-cylinder, air-cooled rotary aero engine that was produced under license in Britain and Germany. Powering several World War I-era aircraft types it was claimed to produce from its capacity of although recorded figures are lower.Lumsden 2003, p. 151. Just under 1,000 units were produced in Britain, the majority (967) by the Daimler Company of Coventry. A 14-cylinder variant was known as the Gnome 14 Lambda-Lambda. In Germany Motorenfabrik Oberursel license-built the seven-cylinder engine as the Oberursel U.0 and later copied the 14-cylinder design and designated it as the Oberursel U.III. Variants ;Gnome 7 Lambda :Seven-cylinder, single-row rotary engine. ;Gnome 7 Lambda (long stroke) :Increased stroke of to raise the compression ratio to 3.87:1, and total displacement to . ;Gnome 14 Double Lambda :14-cylinder, two-row rotary engine using Lambda cylinders. . ;Motorenfabrik Oberursel U.0 :German production of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevon
Elevons or tailerons are aircraft control surfaces that combine the functions of the elevator (used for pitch control) and the aileron (used for roll control), hence the name. They are frequently used on tailless aircraft such as flying wings. An elevon that is not part of the main wing, but instead is a separate tail surface, is a stabilator (but stabilators are also used for pitch control only, with no roll function, as on the Piper Cherokee series of aircraft). Elevons are installed on each side of the aircraft at the trailing edge of the wing. When moved in the same direction (up or down) they will cause a pitching force (nose up or nose down) to be applied to the airframe. When moved differentially, (one up, one down) they will cause a rolling force to be applied. These forces may be applied simultaneously by appropriate positioning of the elevons e.g. one wing's elevons completely down and the other wing's elevons partly down. An aircraft with elevons is controlled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angle Of Incidence (aerodynamics)
On fixed-wing aircraft, the angle of incidence (sometimes referred to as the ''mounting angle'' or ''setting angle'') is the angle between the chord line of the wing where the wing is mounted to the fuselage, and a reference axis along the fuselage (often the direction of minimum drag, or where applicable, the longitudinal axis). The angle of incidence is fixed in the design of the aircraft, and with rare exceptions, cannot be varied in flight. The term can also be applied to horizontal surfaces in general (such as canards or horizontal stabilizers) for the angle they make relative the longitudinal axis of the fuselage. The figure to the right shows a side view of an airplane. The extended chord line of the wing root (red line) makes an angle with the longitudinal axis (roll axis) of the aircraft (blue line). Wings are typically mounted at a small positive angle of incidence, to allow the fuselage to have a low angle with the airflow in cruising flight. Angles of incidence o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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