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Vickers Vildebeest
The Vickers Vildebeest and the similar Vickers Vincent were two very large two- to three-seat single-engined British biplanes designed and built by Vickers and used as light bombers, torpedo bombers and in army cooperation roles. First flown in 1928, it remained in service at the start of the Second World War, with the last Vildebeests flying against Japanese forces over Singapore and Java in 1942. Design and development Vildebeest Designed against Air Ministry Specification 24/25 for the Royal Air Force (RAF), for a land-based torpedo bomber to replace the Hawker Horsley, the prototype Vildebeest, an all-metal fuselage aircraft with single-bay unstaggered fabric-covered wings and tail, was first flown in April 1928 as the Vickers Type 132, powered by a Bristol Jupiter VIII radial engine.Mason 1994, p. 200. After initial evaluation, the Vildebeest was shortlisted for comparison with the Blackburn Beagle and Handley Page Hare. As the Jupiter VIII was prone to vibration, a ... [...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] |
1928 In Aviation
This is a list of aviation-related events from 1928: Events * The Soviet Unions first five-year plan (1928–1932) begins, placing a high priority on the construction of new aircraft factories. It begins a rapid expansion of the Soviet aircraft industry. * The Aeromarine Plane and Motor Company renames itself the Aeromarine-Klemm Corporation and begins to produce the German-designed Klemm aircraft. * The Douglas Company renames itself the Douglas Aircraft Company. * The Kawanishi Aircraft Company is founded. * The Mitsubishi Internal Combustion Engine Company Ltd. changes its name to Mitsubishi Aircraft Company Ltd. * Italy officially records its production rate for military aircraft at 150 per month, with a capacity to expand to 600 per month in wartime. The ''Regia Aeronautica'' (Italian Royal Air Force), meanwhile, determines that it will require a production rate of 900 aircraft per month during a war. * The United States Coast Guard establishes an Aviation Section at its he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westland Wapiti
The Westland Wapiti was a British two-seat general-purpose military single-engined biplane of the 1920s. It was designed and built by Westland Aircraft Works to replace the Airco DH.9A in Royal Air Force service. First flying in 1927, the Wapiti entered service with the RAF in 1928, and remained in production until 1932, a total of 565 being built. It equipped twenty squadrons of the RAF, both overseas (particularly in India and Iraq) and at home, remaining in RAF service until 1940, also being used by the Air Forces of Australia, Canada, South Africa and India. It also formed the basis for the Westland Wallace which partly replaced the Wapiti in RAF use. The Wapiti is named for the wapiti, also known as elk, one of the largest species of the deer family and one of the largest land mammals in North America and eastern Asia. Design and development In 1927, the British Air Ministry issued Specification 26/27 for a replacement of the elderly Airco DH.9A, designed during the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vickers Vincent
The Vickers Vildebeest and the similar Vickers Vincent were two very large two- to three-seat single-engined British biplanes designed and built by Vickers and used as light bombers, torpedo bombers and in army cooperation roles. First flown in 1928, it remained in service at the start of the Second World War, with the last Vildebeests flying against Japanese forces over Singapore and Java in 1942. Design and development Vildebeest Designed against Air Ministry Specification 24/25 for the Royal Air Force (RAF), for a land-based torpedo bomber to replace the Hawker Horsley, the prototype Vildebeest, an all-metal fuselage aircraft with single-bay unstaggered fabric-covered wings and tail, was first flown in April 1928 as the Vickers Type 132, powered by a Bristol Jupiter VIII radial engine.Mason 1994, p. 200. After initial evaluation, the Vildebeest was shortlisted for comparison with the Blackburn Beagle and Handley Page Hare. As the Jupiter VIII was prone to vibration, a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NACA Cowling
The NACA cowling is a type of aerodynamic fairing used to streamline radial engines installed on airplanes. It was developed by Fred Weick of the National Advisory Committee for Aeronautics (NACA) in 1927. It was a major advance in aerodynamic drag reduction, and paid for its development and installation costs many times over due to the gains in fuel efficiency that it enabled. History and design The NACA cowling enhanced speed through drag reduction while delivering improved engine cooling. The cowling consists of a symmetric, circular airfoil that is wrapped around the engine. In a normal planar airfoil, like a wing, it is the difference in airspeed, and their associated changes in pressure, on the top and bottom of the surface that produces lift. In the case of the NACA cowl, the ring-shaped airfoil is positioned so this lift effect is forward, producing thrust. This thrust does not counteract the total drag of the cowl, but greatly reduces its overall value. The differenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sleeve Valve
The sleeve valve is a type of valve mechanism for piston engines, distinct from the usual poppet valve. Sleeve valve engines saw use in a number of pre-World War II luxury cars and in the United States in the Willys-Knight car and light truck. They subsequently fell from use due to advances in poppet-valve technology, including sodium cooling, and the Knight system double sleeve engine's tendency to burn a lot of lubricating oil or to seize due to lack of it. The Scottish Argyll company used its own, much simpler and more efficient, single sleeve system (Burt-McCollum) in its cars, a system which, after extensive development, saw substantial use in British aircraft engines of the 1940s, such as the Napier Sabre, Bristol Hercules, Centaurus, and the promising but never mass-produced Rolls-Royce Crecy, only to be supplanted by the jet engines. Description A sleeve valve takes the form of one or more machined sleeves. It fits between the piston and the cylinder wall in the cylin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Perseus
The Bristol Perseus was a British nine-cylinder, single-row, air-cooled radial aircraft engine produced by the Bristol Engine Company starting in 1932. It was the first production sleeve valve aero engine. Design and development In late 1925 and early 1926, the Royal Aircraft Establishment (RAE) published a series of papers by Harry Ricardo on the sleeve valve principle. The main advantages over the traditional poppet valves was better volumetric efficiency and the ability to operate at higher rotational speeds. This allowed a smaller engine to produce the same power as a larger one, leading to better fuel efficiency and compact design, particularly in multi-row radial engines. Roy Fedden, Bristol's primary engine designer, became interested in the concept and by 1927 he had constructed a working two-cylinder V as a test bed, with the idea of developing it into a V-12. Problems cropped up on the design, notably the sleeves bursting during the power stroke and stripping their d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Air Ministry Specifications
This is a partial list of the British Air Ministry (AM) specifications for aircraft. A specification stemmed from an Operational Requirement, abbreviated "OR", describing what the aircraft would be used for. This in turn led to the specification itself, e.g. a two-engined fighter with four machine guns. So for example, OR.40 for a heavy bomber led to Specification B.12/36. Aircraft manufacturers would be invited to present design proposals to the ministry, following which prototypes of one or more of the proposals might be ordered for evaluation. On very rare occasions, a manufacturer would design and build an aircraft using their own money as a "private venture" (PV). This would then be offered to the ministry for evaluation. If the aircraft generated interest in the ministry or RAF due to performance or some other combination of features then the ministry might well issue a specification based on the private venture aircraft. The system of producing aircraft to a specification ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Pegasus
The Bristol Pegasus is a British nine-cylinder, single-row, air-cooled radial aero engine. Designed by Roy Fedden of the Bristol Aeroplane Company, it was used to power both civil and military aircraft of the 1930s and 1940s. Developed from the earlier Mercury and Jupiter engines, later variants could produce 1,000 horsepower (750 kW) from its capacity of 1,750 cubic inches (28 L) by use of a geared supercharger. Further developments of the Pegasus created the fuel-injected Bristol Draco and the diesel cycle Bristol Phoenix, both types being produced in limited numbers. In contrast, by the end of production over 30,000 Pegasus engines had been built. Aircraft applications ranged from single-engine biplanes to the four-engined Short Sandringham and Sunderland flying boats. Several altitude and distance records were set by aircraft using the Pegasus. The Bristol Siddeley company reused the name many years later for the turbofan engine used in the Hawker Siddeley Harrier a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armstrong Siddeley Panther
The Armstrong Siddeley Panther was a 27-litre 14-cylinder twin-row air-cooled radial aero engine developed by Armstrong Siddeley. It was originally named the Jaguar Major.Lumsden 2003, p.72. Applications * Armstrong Whitworth Atlas Mk II * Armstrong Whitworth A.W.XIV Starling MkII * Armstrong Whitworth A.W.16 * Armstrong Whitworth A.W.35 Scimitar * Fairey Gordon * Fokker C.V * Hawker Hoopoe * Marinens Flyvebaatfabrikk M.F.11 * Supermarine Air Yacht * Westland Wapiti V (first prototype) Specifications (Panther VII) See also References Notes Bibliography * Lumsden, Alec. ''British Piston Engines and their Aircraft''. Marlborough, Wiltshire: Airlife Publishing, 2003. . {{ASaeroengines 1920s aircraft piston engines Aircraft air-cooled radial piston engines Panther Panther may refer to: Large cats *Pantherinae, the cat subfamily that contains the genera ''Panthera'' and ''Neofelis'' **'' Panthera'', the cat genus that contains tigers, lions, jaguars and leopards. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeroplane Monthly
''Aeroplane'' (formerly ''Aeroplane Monthly'') is a British magazine devoted to aviation, with a focus on aviation history and preservation. __TOC__ ''The Aeroplane'' The weekly ''The Aeroplane'' launched in June 1911 under founding editor C. G. Grey with Victor Sassoon. Grey remained editor until November 1939. ''Aeroplane Monthly'' Issue 1 of ''Aeroplane Monthly'' was published in May 1973 at a cover price of 30p, in association with ''Flight International'', by IPC Media. The founder was Richard T. Riding (1942-2019), whose father, E.J. Riding, had been photographer for ''The Aeroplane'' magazine of the 1940s. The magazine is now owned by Key Publishing Ltd and headquartered in Stamford, Lincolnshire. The magazine is the successor to an earlier, weekly publication called ''The Aeroplane'', founded in 1911. See also *''Flight International ''Flight International'' is a monthly magazine focused on aerospace. Published in the United Kingdom and founded in 1909 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handley Page Hare
__NOTOC__ The Handley Page HP.34 Hare was a British two-seat high-altitude day bomber designed and built at Cricklewood by Handley Page. It was designed by Harold Boultbee to meet the requirements of List Of Air Ministry Specifications#1920-1929, Air Ministry Specification 23/25 for a replacement for the Hawker Horsley in the day bomber role,Mason 1994, p.195-196. competing against the Blackburn Beagle, Hawker Harrier, Gloster Goring and Westland Witch. The Hare was a conventional biplane, with single-bay unequal-span Stagger (aviation), staggered wings, of mixed wood and metal construction (although the specification required that any production aircraft be of all-metal construction). It had a crew of two with the pilot in an open cockpit aft of the wing with a gunner/bomb aimer behind him. Only one aircraft was built, with the United Kingdom military aircraft serials, serial ''J8622''. It was first flown on 24 February 1928, powered by a Bristol Jupiter, Gnome-Rhône Jupiter a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
