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Pobjoy P
The Pobjoy P was a British seven-cylinder, air-cooled, aircraft engine designed by Douglas Rudolf Pobjoy and built by Pobjoy Airmotors. It became the progenitor of the Pobjoy R/ Niagara/Cataract family of small radial engines. A notable feature of the Pobjoy P was the propeller reduction gear which allowed the small engine to operate at more desirable higher speeds. Applications * Comper C.L.A.7 Swift * Parnall Imp The Parnall Imp was an unusual single-engined, two-seat British biplane built in 1927. It had a straight cantilever lower wing which supported the markedly swept upper wing. Only one was built. Design and development The unusual appearance o ... Specifications (Pobjoy P) References {{Pobjoy aeroengines P 1920s aircraft piston engines Aircraft air-cooled radial piston engines ... [...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] |
Pobjoy Cataract
A cataract is a cloudy area in the lens of the eye that leads to a decrease in vision. Cataracts often develop slowly and can affect one or both eyes. Symptoms may include faded colours, blurry or double vision, halos around light, trouble with bright lights, and difficulty seeing at night. This may result in trouble driving, reading, or recognizing faces. Poor vision caused by cataracts may also result in an increased risk of falling and depression. Cataracts cause 51% of all cases of blindness and 33% of visual impairment worldwide. Cataracts are most commonly due to aging but may also occur due to trauma or radiation exposure, be present from birth, or occur following eye surgery for other problems. Risk factors include diabetes, longstanding use of corticosteroid medication, smoking tobacco, prolonged exposure to sunlight, and alcohol. The underlying mechanism involves accumulation of clumps of protein or yellow-brown pigment in the lens that reduces transmission of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pobjoy Aircraft Engines
Pobjoy Airmotors and Aircraft was a British manufacturer of small aircraft engines. The company was purchased by Short Brothers shortly before the start of World War II, production continuing until the end of the war. History Douglas Rudolf Pobjoy started in the engine business working with Roy Fedden at Cosmos Engineering just after the end of World War I. Cosmos went bankrupt shortly after the war, and its assets were picked up by the Bristol Aeroplane Company, where Fedden would go on to produce a line of extremely successful engines. Pobjoy also spent time in the RAF as an education officer. Here he met Flt. Lt. Nicholas Comper who went on to design the Comper Swift, that would later fly from London to Australia in 9 days 2 hours. Pobjoy partnered with Parnall to develop an engine for the Swift. Although they felt that a cast-block inline engine like the ones being produced by Cirrus and de Havilland would always be less expensive, they nevertheless selected the radial layo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzole
In the United Kingdom, benzole or benzol is a coal-tar product consisting mainly of benzene and toluene. It was originally used as a 'motor spirit', as was petroleum spirits. Benzole was also blended with petrol and sold as a motor fuel under trade names including "National Benzole Mixture" and "Regent Benzole Mixture". Confusingly, in certain languages, such as German, Hungarian, Ukrainian and Russian the word "benzol" (or benzole) means benzene, and in some of these languages, words pronounced like benzene (e.g. the German word "Benzin") can mean petrol, or gasoline.Collins German Concise Dictionary, 1991, See also * Antiknock agent An antiknock agent is a gasoline additive used to reduce engine knocking and increase the fuel's octane rating by raising the temperature and pressure at which auto-ignition occurs. The mixture known as gasoline or petrol, when used in high compr ... References External links The National Benzole CompanyInsolvent since 8 April 2013 Coal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petrol
Gasoline (; ) or petrol (; ) (see ) is a transparent, petroleum-derived flammable liquid that is used primarily as a fuel in most spark-ignited internal combustion engines (also known as petrol engines). It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. On average, U.S. refineries produce, from a barrel of crude oil, about 19 to 20 gallons of gasoline; 11 to 13 gallons of distillate fuel (most of which is sold as diesel fuel); and 3 to 4 gallons of jet fuel. The product ratio depends on the processing in an oil refinery and the crude oil assay. A barrel of oil is defined as holding 42 US gallons, which is about 159 liters or 35 imperial gallons. The characteristic of a particular gasoline blend to resist igniting too early (which causes knocking and reduces efficiency in reciprocating engines) is measured by its octane rating, which is produced in several grades. Tetraethyl lead and other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zenith Carburettor Company (British)
The Zenith Carburetter Company Limited was a British company making carburettors in Stanmore Middlesex, founded in 1912 as a subsidiary of the French . In 1965, the company joined with its major pre-war rival Solex Carburettors, and over time, the Zenith brand name fell into disuse. The rights to the Zenith designs were owned by Solex UK (a daughter company of Solex in France). While better known for its much later products, Zenith produced carburettors that were standard equipment on some very early, brass era automobiles, including the Scripps-Booth. Products Zenith's best-known products were the Zenith-Stromberg carburettors used from 1965–1967 Humber Super Snipe Series Va/Vb, Humber Imperial, 1967–1975 Jaguar E-types, Saab 99s, 90s and early 900s, 1969–1972 Volvo 140s and 164s, 1966–1979 Hillman Minx, Hunter (Arrow), 1966–1970 Singer Gazelle/ Vogue (Arrow), 1967–1975 Sunbeam Alpine/ Rapier Fastback (Arrow), 1970–1981 Hillman/Chrysler/Talbot/Sunb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parnall Imp
The Parnall Imp was an unusual single-engined, two-seat British biplane built in 1927. It had a straight cantilever lower wing which supported the markedly swept upper wing. Only one was built. Design and development The unusual appearance of the Parnall Imp was entirely due to its wings, for it was otherwise a conventional two-seat, single-engined biplane of its time. Harold Bolas stated that he designed them to be simple and to allow the best possible view from either of the two cockpits. The simplicity came from the complete absence of the rigging wires that braced conventional biplanes and needed constant attention. Instead, the Imp had a cantilever lower wing which had not only to support itself but also most of the forces on the upper wing. These lower wings were unswept and rectangular, with an aspect ratio of about 4.9, though the ailerons occupied the whole of the trailing edge and about 40% of the chord. Since as cantilevers they had to be internally braced, the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comper C
Comper is a surname. Notable people with the surname include: * F. Anthony Comper (born 1945), known as Tony Comper, is a Canadian banker * John Comper (1823–1903), Anglican Priest who served in the Episcopal Church in Scotland *Nicholas Comper (1897–1939), English aviator and aircraft designer *Ninian Comper (1864–1960), Scottish architect See also *Château de Comper, castle located in Paimpont forest (formerly known as Brocéliande) in the département of Morbihan, Bretagne, France *Comper Aircraft Company, 1930s British light aircraft manufacturer ** Comper Kite, single engined, two seat touring monoplane ** Comper Mouse, 1930s British three-seat cabin monoplane ** Comper Streak, single engined, single seat racing monoplane **Comper Swift The Comper C.L.A.7 Swift is a British 1930s single-seat sporting aircraft produced by Comper Aircraft Company Ltd of Hooton Park, Cheshire. Design and development In March 1929 Flight Lieutenant Nicholas Comper left the Royal Air Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pobjoy Niagara
The Pobjoy Niagara is a British seven-cylinder, air-cooled, radial, aero-engine first produced in 1934. The design ran at higher speeds than conventional engines, and used reduction gearing to lower the speed of the propeller. This led to a noticeable off-centre mounting for the propeller. The Niagara was a popular engine for light and experimental aircraft, well regarded due to its small diameter, smooth operation, low noise and innovative engineering. Variants ;Niagara I :Bore/stroke 77 x 87 mm (3.03 x 3.43 in), swept volume 2,835 cc (173 cu in). Compression 6.25:1, gearing 0.47:1. Normal continuous power 84 hp (63 kW) at 3,200 rpm at sea level. ;Niagara II :Bore/stroke 77 x 87 mm (3.03x3.43 in), swept volume 2,835 cc (173 cu in). Compression 6.0:1, gearing 0.39:1. Normal continuous power 84 hp (63 kW) at 3,200 rpm at sea level. ;Niagara III :Bore/stroke 77 x 87 mm (3.03x3.43 in), swept volume 2,835 cc (173 cu in). Gearing 0.47:1. Normal continuous power 88 hp (66 kW) at 3,3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft/page Content
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] |
Pobjoy R
The Pobjoy R is a British seven-cylinder air-cooled radial aircraft engine designed and built by Pobjoy Airmotors. Introduced in 1926, it was a popular engine for ultralight and small aircraft in the 1930s. A notable feature of the Pobjoy R was the propeller reduction gear which allowed the small engine to operate at more desirable higher speeds. The engine was license produced in Czechoslovakia by Walter Aircraft Engines as the Walter Mira. Retrieved: 27 November 2021 Variants ;Walter Mira R :License produced version of Pobjoy R. ;Walter Mi ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas Rudolf Pobjoy
Douglas may refer to: People * Douglas (given name) * Douglas (surname) Animals *Douglas (parrot), macaw that starred as the parrot ''Rosalinda'' in Pippi Longstocking *Douglas the camel, a camel in the Confederate Army in the American Civil War Businesses * Douglas Aircraft Company * Douglas (cosmetics), German cosmetics retail chain in Europe * Douglas (motorcycles), British motorcycle manufacturer Peerage and Baronetage * Duke of Douglas * Earl of Douglas, or any holder of the title * Marquess of Douglas, or any holder of the title * Douglas Baronets Peoples * Clan Douglas, a Scottish kindred * Dougla people, West Indians of both African and East Indian heritage Places Australia * Douglas, Queensland, a suburb of Townsville * Douglas, Queensland (Toowoomba Region), a locality * Port Douglas, North Queensland, Australia * Shire of Douglas, in northern Queensland Belize * Douglas, Belize Canada * Douglas, New Brunswick * Douglas Parish, New Brunswick * Douglas, O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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