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Westland Whirlwind (helicopter)
The Westland Whirlwind helicopter was a British licence-built version of the U.S. Sikorsky Aircraft, Sikorsky Sikorsky H-19 Chickasaw, S-55/H-19 Chickasaw. It primarily served with the Royal Navy's Fleet Air Arm in anti-submarine and search and rescue roles. It was also exported to other countries, and the Whirlwind was succeeded by the turbine powered Westland Wessex (based on the Sikorsky H-34) which was developed from the H-19/Whirlwind. The helicopter was made in many variants using a variety of radial (piston) and turbine engines. Whirlwind helicopters fitted with turbine power served right up until the early 1980s, and a converted Whirlwind was in the Air transport of the British royal family and government, Queen's Flight. Design and development In 1950, Westland Aircraft, already building the American Sikorsky H-5, Sikorsky S-51 under licence as the Westland Dragonfly, purchased the rights to manufacture and sell Sikorsky's larger Sikorsky H-19, Sikorsky S-55 helicop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is an affinity group for contributors with shared goals within the Wikimedia movement. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sibling 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 Magazine, 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 outsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Search And Rescue
Search and rescue (SAR) is the search for and provision of aid to people who are in distress or imminent danger. The general field of search and rescue includes many specialty sub-fields, typically determined by the type of terrain the search is conducted over. These include mountain rescue; ground search and rescue, including the use of search and rescue dogs (such as K9 units); urban search and rescue in cities; combat search and rescue on the battlefield and air-sea rescue over water. International Search and Rescue Advisory Group (INSARAG) is a UN organisation that promotes the exchange of information between national urban search and rescue organisations. The duty to render assistance is covered by Article 98 of the UNCLOS. Definitions There are many different definitions of search and rescue, depending on the agency involved and country in question. *Canadian Armed Forces and Canadian Coast Guard: "Search and Rescue comprises the search for, and provision of ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turboshaft
A turboshaft engine is a form of gas turbine that is optimized to produce shaft horsepower rather than jet thrust. In concept, turboshaft engines are very similar to turbojets, with additional turbine expansion to extract heat energy from the exhaust and convert it into output shaft power. They are even more similar to turboprops, with only minor differences, and a single engine is often sold in both forms. Turboshaft engines are commonly used in applications that require a sustained high power output, high reliability, small size, and light weight. These include helicopters, auxiliary power units, boats and ships, tanks, hovercraft, and stationary equipment. Overview A turboshaft engine may be made up of two major parts assemblies: the 'gas generator' and the 'power section'. The gas generator consists of the Gas compressor, compressor, combustion chambers with ignitors and fuel nozzles, and one or more stages of turbine. The power section consists of additional stages of turbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolls-Royce Gnome
The Rolls-Royce Gnome is a British turboshaft engine originally developed by the de Havilland Engine Company as a licence-built General Electric T58, an American mid-1950s design. The Gnome came to Rolls-Royce after their takeover of Bristol Siddeley in 1966, Bristol having absorbed de Havilland Engines Limited in 1961. A licence to manufacture the T58 was purchased in 1958. The T58 had begun bench testing in 1955 and by 1958 had already been used in helicopters and de Havilland were able to test their first engines in a Westland Whirlwind and Wasp helicopters in August 1959 and March 1960 respectively. A free-turbine turboshaft, it was used in helicopters such as the Westland Sea King and Westland Whirlwind. The design was sub-licensed to Alfa-Romeo. There were two series produced: the "H" turboshaft for helicopter use, and the "P" turboprop for fixed-wing aircraft. Design and development A two-stage turbine drives the 10 stage all-axial compressor, whilst a single-st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonar
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects on or under the surface of the water, such as other vessels. "Sonar" can refer to one of two types of technology: ''passive'' sonar means listening for the sound made by vessels; ''active'' sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and sodar (an upward-looking in-air sonar) is used for atmospheric investigations. The term ''sonar'' is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low ( infrasonic) to e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-submarine Warfare
Anti-submarine warfare (ASW, or in the older form A/S) is a branch of underwater warfare that uses surface warships, aircraft, submarines, or other platforms, to find, track, and deter, damage, or destroy enemy submarines. Such operations are typically carried out to protect friendly shipping and coastal facilities from submarine attacks and to overcome blockades. Successful ASW operations typically involve a combination of sensor and weapon technologies, along with effective deployment strategies and sufficiently trained personnel. Typically, sophisticated sonar equipment is used for first detecting, then classifying, locating, and tracking a target submarine. Sensors are therefore a key element of ASW. Common weapons for attacking submarines include torpedoes and naval mines, which can both be launched from an array of air, surface, and underwater platforms. ASW capabilities are often considered of significant strategic importance, particularly following provocative instanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alvis Leonides Major
The Alvis Leonides Major is a British air-cooled 14-cylinder radial aero engine developed by Alvis Alvis is a given name and a surname (close to the uncommon Scottish surname Alves). Alvis may also refer to: *Alvi, a Muslim community in South Asia, who claims descent from the fourth Rashidun caliph, Ali ibn Abi Talib *Alvis Car and Engineering ... from the earlier nine-cylinder Leonides. Design and development In 1951 Alvis started development of a 14-cylinder, two row radial of 1,118 cu in (18.3 L) displacement, based on the Leonides. Certification covered the Mk. 702/1 for aeroplanes at and the 751/1 for helicopters at . The only numerous model of the Major was the Mk. 755/1, a medium supercharged, de-rated, obliquely mounted direct-drive and fan cooled engine fitted to the Westland Whirlwind Mks. 5, 6, 7 and 8.Lumsden 2003, pp.60-61. Variants ''Data from:British Piston Engines and their Aircraft.'' ;Leonides Major 702/1 : for aeroplanes, also known as A.LE.M.1-1 in Ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wright R-1300
The Wright R-1300 Cyclone 7 is an American air-cooled seven-cylinder supercharged radial aircraft engine produced by Curtiss-Wright. Design and development The R-1300 is basically a single row Wright R-2600. The engine was mass-produced but not widely used. Engineering began in 1942 but the first flight of an R-1300 did not take place until 1949. The engine was produced under license by Kaiser-Frazer and later by AVCO Lycoming.USAF Technical Manuals, Parts Breakdown, Overhaul Instructions 1951-1971 T.O. 2R-1300-14 The engine was used in combat — the R-1300-1A and -1B in the A model North American T-28 Trojan and the R-1300-3, -3A, -3C and -3D in the Sikorsky H-19 Chickasaw. The R-1300-1B was used to power the Ayres Thrush. The R-1300-4 and -4A were used in the N class blimp; 50 of these variants were produced by AVCO. Early-production engines had vibration problems, an improved lateral dampener in the crank brought about most of the model changes. Variants ;R-1300-1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney R-1340
The Pratt & Whitney R-1340 Wasp is an aircraft engine of the reciprocating engine, reciprocating type that was widely used in United States, American aircraft from the 1920s onward. It was the Pratt & Whitney aircraft company's first engine, and the first of the famed Pratt & Whitney Wasp series, Wasp series. It was a single-row, nine-cylinder (engine), cylinder, air-cooled engine, air-cooled, radial engine, radial design, and engine displacement, displaced 1,344 cubic inches (22 L); bore and stroke were both 5.75 in (146 mm). A total of 34,966 engines were produced. As well as numerous types of fixed-wing aircraft, it was used to power helicopters, the Agusta-Bell AB.102 and the Sikorsky H-19, and a class of airship, the K-class blimp. In 2016, it received designation as a List of Historic Mechanical Engineering Landmarks, Historic Engineering Landmark from the ASME, American Society of Mechanical Engineers. Variants ''Note:'' R for Radial and 1340 for 1340 cub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westland Dragonfly
The Westland WS-51 Dragonfly helicopter was built by Westland Aircraft and was an Anglicised licence-built version of the American Sikorsky H-5, Sikorsky S-51. Design and development On 19 January 1947 an agreement was signed between Westland Aircraft and Sikorsky Aircraft, Sikorsky to allow a British version of the S-51 to be manufactured under licence in the United Kingdom. These would be powered by the 500 hp Alvis Leonides radial engine. A modified version was also developed by Westland as the Westland Widgeon (helicopter), Westland Widgeon, but it was commercially unsuccessful. After delays caused by the need to modify and convert American-drawings to reflect British-sourced items and to replace the engine with a British-built Alvis Leonides 50, the prototype was first flown from Yeovil on 5 October 1948 piloted by Alan Bristow. Only 16 months had elapsed since work had begun on building the prototype registered G-AKTW. After evaluation initial orders for the Briti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sikorsky H-5
The Sikorsky H-5 (initially designated R-5 and also known by company designations S-48, S-51 and VS-327Fitzsimons, Bernard, (general editor). ''Illustrated Encyclopedia of 20th Century Weapons and Warfare'' (London: Phoebus, 1978), Volume 20, p.2173, "R-5, Sikorsky".) is a helicopter built by Sikorsky Aircraft Corporation. It was used by the United States Air Force, and its predecessor, the United States Army Air Forces, as well as the United States Navy and United States Coast Guard (with the designations HO2S and HO3S). It was also used by the United States Post Office Department. The civilian version, under the designation S-51, was the first helicopter to be operated commercially, commencing in 1946. In December 1946, an agreement was signed between the British company Westland Aircraft and Sikorsky to produce a British version of the H-5, to be License-built, manufactured under license in Britain as the Westland WS-51 Dragonfly, Westland-Sikorsky WS-51 Dragonfly. By the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westland Whirlwind 1 G-AOCZ BLA 05
Westland or Westlands may refer to: Places *Westlands, Nairobi, an affluent neighbourhood in the city of Nairobi, Kenya * Westlands, Staffordshire, a suburban area and ward in Newcastle-under-Lyme *Westland, a peninsula of the Shetland Mainland near Vaila, Scotland Netherlands *Westland (municipality), Netherlands * Westland (region), Netherlands New Zealand *Westland District, a political subdivision on the West Coast of New Zealand's South Island * Westland Tai Poutini National Park, a national park **Informally, the name often used for the entire West Coast region, of which the Westland District is a part ** Westland (New Zealand electorate) a former parliamentary electorate in the above area **Westland Province, a province of New Zealand from 1873–76 United States * Westland, Indiana *Westland, Michigan * Westland, Oregon; see McKay Reservoir * Westland, Pennsylvania * Westland, Virginia *Westland Mall (Hialeah), a shopping mall in Hialeah, Florida * Westland Mans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
