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R-1830 Twin Wasp
The Pratt & Whitney R-1830 Twin Wasp is an American air-cooled radial aircraft engine. It displaces and its bore and stroke are both . The design traces its history to 1929 experiments at Pratt & Whitney on twin-row designs. Production began in 1932 and it was widely used during the 1930s. It was selected as the power plant for both the four-engined Consolidated B-24 Liberator heavy bomber and the twin-engined Douglas DC-3 transport, two of the most-produced aircraft. The production run of 173,618 R-1830 examples makes it the most-produced aviation engine in history. A further developed version, the R-2000, was produced starting in 1942. The R-2000 was "bored-out" to and had a number of other minor changes to improve fuel economy and allow it to run at higher power ratings on lower-octane fuel. The primary user of the R-2000 was the Douglas DC-4. Mostly retired today, the R-1830 is still used on Douglas DC-3 and various museum aircraft and warbirds seen at airshows. 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] |
Pratt & Whitney R-2000
The Pratt & Whitney R-2000 Twin Wasp is an American radial engine developed in 1942 to power military aircraft. It is one of the Pratt & Whitney Wasp series of Radial engines. Design and development The R-2000 was an enlarged version of the Pratt & Whitney R-1830 Twin Wasp, with focus on reducing the manufacturing costs and fuel requirements. The bore was increased to , while it still retained the stroke. This brought displacement up to . There were a number of detail changes from the R-1830, such as front-mounted instead of rear-mounted magnetos (as with the larger, and earlier Double Wasp), plain bearings for the crankshaft rather than roller bearings, and 87 octane fuel (specified because there were fears wartime supplies of 100 octane might fall short, but those fears were groundless). The R-2000 produced 1,300 hp @ 2,700 rpm with 87 octane, 1,350 hp with 100 octane and 1,450 hp @ 2,800 rpm with 100/130-grade fuel. Applications * Aviation Trade ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bloch MB
Bloch is a surname of German origin. Notable people with this surname include: A–F * (1859-1914), French rabbi *Adele Bloch-Bauer (1881-1925), Austrian entrepreneur *Albert Bloch (1882–1961), American painter * (born 1972), German motor journalist and presenter * (1878–?), Russian lawyer, journalist, lawyer, and revolutionary * Alexandre Bloch (1857–1919), French painter *Alfred Bloch (born 1877), French footballer * (1915–1983), Swiss linguist * (1904–1979), German-British engineer * Aliza Bloch (born 1957), First female mayor of Bet Shemesh, Israel * (1768–1838), Swiss Benedictine monk *André Bloch (composer) (1873–1960), French composer and music educator *André Bloch (mathematician) (1893–1948), French mathematician * (1914–1942), French agent of the Special Operations Executive * Andreas Bloch (1860–1917), Norwegian painter, illustrator and costume designer * Andy Bloch (born 1969), American poker player *Anna Bloch (1868–1953), Danish actress *Armand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DAP Beaufort
DAP or Dap may refer to: Science * DAP (gene), human gene that encodes death-associated proteins, which mediate programmed cell death * Diamidophosphate, phosphorylating compound * Diaminopimelic acid, amino acid derivative of lysine * Diaminopyridine, drug for the treatment of rare muscular diseases * Diaminopyrimidine, a class of organic chemicals * Diammonium phosphate, chemical used as a fertilizer and flame retardant * Dog appeasing pheromone, synthetic analogue of a canine hormone * Dose area product, a measurement of radiation exposure Technology * DAP (software), a statistical analysis program * Debug Access Port, for ARM processors * Digital Adoption Platform, a marketing term for software from WalkMe * Digital Archive Project, a collaboration for publishing non-mainstream TV programmes * Digital Audio Player, a class of electronic devices that play digital audio * Direct-Action Penetrator, the gunship version of the Sikorsky UH-60 Black Hawk helicopter * Director ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
P&W Twin Wasp - an album by Steve Vai
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P&W may refer to: * Portland and Western Railroad * Philadelphia and Western Railroad * Providence and Worcester Railroad * Pratt & Whitney - an aircraft engine manufacturer * Pratt & Whitney Measurement Systems - a maker of metrological equipment * Passion and Warfare ''Passion and Warfare'' is the second studio album by guitarist Steve Vai, released on May 22, 1990 through Relativity and Epic Records. It has been certified Gold by the RIAA. Background ''Passion and Warfare'' was written based on a series ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saab 18
The Saab 18 was a twin-engine bomber and reconnaissance aircraft, designed and built by Svenska Aeroplan AB (SAAB) for use by the Swedish Air Force in response to a 1938 design competition. Due to delays, it did not enter service until 1944, but quickly became the standard Swedish bomber aircraft. Serving in the bomber, reconnaissance and ground-attack roles, it also assisted in the development of ejection seats and air-to-surface guided missiles until its replacement by the Saab Lansen in the late 1950s. Design and development Intended as a replacement for the Junkers Ju 86 in service with the Swedish Air Force,Fredriksson, Urban. (2005"Saab 18" ''Swedish Military Aviation''. Accessed 2010-05-17. the requirement that led to the Saab 18 called for a three-seat fast reconnaissance aircraft.Donald 1997, p. 809. AB Svenska Järnvägsverkstädernas Aeroplanavdelning (ASJA), SAAB, and AB Götaverken (GV) submitted designs for consideration by the Swedish Air Force. GV's GV8 appear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saab 17
The Saab 17 is a Swedish single-engine monoplane reconnaissance dive-bomber aircraft of the 1940s originally developed by ASJA prior to its merger into Saab. It was the first all-metal stressed skin aircraft developed in Sweden. Design and development The project was initiated in response to a 1938 request from the '' Flygvapnet'' (Swedish Air Force) for a reconnaissance aircraft to replace the obsolete Fokker S 6 (C.Ve) sesquiplane. Design work began at the end of the 1930s as the L 10 by ASJA, but once accepted by the '' Flygvapnet'' it was assigned the designations B 17 and S 17 for the bomber and reconnaissance versions respectively, and it became better known as the Saab 17. The design chosen was a conventional mid-wing cantilever monoplane with a long greenhouse canopy and a single radial engine in the nose. Control surfaces were covered in fabric but the remainder was stressed-skin duraluminum. It could be fitted with wheels or skiis, both of which retracted straight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FFVS 22
The FFVS J 22 was a Swedish single-engine fighter aircraft developed for the Swedish Air Force during World War II. Development At the onset of World War II, the Swedish Air Force (''Flygvapnet'') was equipped with largely obsolete Gloster Gladiator (J 8) biplane fighters. To augment this, Sweden ordered 120 Seversky P-35 (J 9) and 144 P-66 Vanguard (J 10) aircraft from the United States. However, on 18 June 1940 after the German occupation of Norway, the United States declared an embargo against exporting weapons to any nation other than Great Britain. As the result, ''Flygvapnet'' suddenly faced a shortage of modern fighters. Several other foreign alternatives were considered: the Finnish VL Myrsky and Soviet Polikarpov I-16 were unsatisfactory, and while the Mitsubishi A6M or Aichi D3A was available, delivery from Japan was impractical. A batch of Fiat CR.42 Falco (J 11) biplanes and Reggiane Re.2000 ''Falco'' (J 20) were eventually purchased but this was clearly an inter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twincharger
A twincharger refers to a compound forced induction system used on some internal combustion engines. It is a combination of an exhaust-driven turbocharger and a mechanically driven supercharger, each mitigating the weaknesses of the other. Twincharging does not refer to a twin-turbo arrangement, but to a setup where two different types of compressors are used (instead of only turbochargers). Overview and advantages A mechanically driven supercharger offers exceptional response and low-rpm performance, as it does not rely on pressurization of the exhaust manifold (assuming that it is a positive-displacement design, such as a Roots-type or twin-screw, as opposed to a centrifugal supercharger, which does not provide substantial boost in the lower rpm range), but is less efficient than a turbocharger due to increased parasitic load. A turbocharger sized to move a large volume of air tends to respond slowly to throttle input, while a smaller, more responsive turbocharger may fail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warbird
A warbird is any vintage military aircraft now operated by civilian organizations and individuals, or in some instances, by historic arms of military forces, such as the Battle of Britain Memorial Flight, the RAAF Museum Historic Flight, or the South African Air Force Museum Historic Flight. Naming Although the term originally implied piston-driven aircraft from the World War II era, it is now often extended to include all airworthy former military aircraft, including, jet-powered aircraft, and helicopters The several different types of warbirds include the fighter, trainer, bomber, jet, transports, utility, etc. Examples of aircraft types include the North American P-51 Mustang, Vought F4U Corsair, Boeing B-17 Flying Fortress, North American T-6 Texan, Beechcraft T-34 Mentor, Messerschmitt Bf 109, Hawker Hurricane, and Supermarine Spitfire. Sometimes, modern production aircraft such as Allison V-1710-powered Yakovlev Yak-9s from Yakovlev and replicas and reproductions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas DC-4
The Douglas DC-4 is an American four-engined (piston), propeller-driven airliner developed by the Douglas Aircraft Company. Military versions of the plane, the C-54 and R5D, served during World War II, in the Berlin Airlift and into the 1960s. From 1945, many civil airlines operated the DC-4 worldwide. Design and development Following proving flights by United Airlines of the DC-4E, it became obvious that the 52-seat airliner was too inefficient and unreliable to operate economically and the partner airlines, American Airlines, Eastern, Pan American, Trans World and United, recommended a lengthy list of changes to the design. Douglas took the new requirements and produced an entirely new, much smaller design, the DC-4A, with a simpler, still unpressurized fuselage, Pratt & Whitney R-2000 Twin Wasp engines, and a single fin and rudder. A tricycle landing gear was retained. With the entry of the United States into World War II, in December 1941, the United States Army Air Forc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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