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Bell 205
The Bell 204 and 205 are the civilian versions of the UH-1 Iroquois single-engine military helicopter of the Huey family of helicopters. They are type-certificated in the transport category and are used in a wide variety of applications, including crop dusting, cargo lifting, Forestry Operations, and aerial firefighting. Development Bell designed its Model 204 in response to a 1955 United States Army requirement for a utility helicopter. The 204 was a giant step forward in helicopter design, being one of the first to be powered by a turboshaft. The turboshaft engine radically improved the practicality of the helicopter due to its light weight and high power-to-weight ratio, lower fuel consumption, and lower maintenance and operating costs. The use of a turboshaft in the 204 allowed it to carry a useful payload over respectable ranges and at reasonable speeds, which resulted in the 204 and subsequent 205 becoming the most successful western helicopter series in terms of n ... [...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] |
Power-to-weight Ratio
Power-to-weight ratio (PWR, also called specific power, or power-to-mass ratio) is a calculation commonly applied to engines and mobile power sources to enable the comparison of one unit or design to another. Power-to-weight ratio is a measurement of actual performance of any engine or power source. It is also used as a measurement of performance of a vehicle as a whole, with the engine's power output being divided by the weight (or mass) of the vehicle, to give a metric that is independent of the vehicle's size. Power-to-weight is often quoted by manufacturers at the peak value, but the actual value may vary in use and variations will affect performance. The inverse of power-to-weight, weight-to-power ratio (power loading) is a calculation commonly applied to aircraft, cars, and vehicles in general, to enable the comparison of one vehicle's performance to another. Power-to-weight ratio is equal to thrust per unit mass multiplied by the velocity of any vehicle. Power-to-weight ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycoming T55
The Honeywell T55 (formerly Lycoming; company designation LTC-4) is a turboshaft engine used on American helicopters and Fixed-wing aircraft, fixed-wing aircraft (in turboprop form) since the 1950s, and in H1 Unlimited, unlimited hydroplanes since the 1980s. As of 2021, more than 6,000 of these engines have been built. It is produced by Honeywell Aerospace, a division of Honeywell based in Phoenix, Arizona, and was originally designed by the Turbine Engine Division of Lycoming Engines in Stratford, Connecticut, as a scaled-up version of the smaller Lycoming T53. The T55 serves as the engine on several major applications including the CH-47-Chinook, the Bell 309, and the Piper PA-48 Enforcer. The T55 also serves as the core of the Lycoming ALF 502 turbofan and the TF series of industrial and marine gas turbines, now produced by Vericor Power Systems. Since the T55 was first developed, progressive increases in airflow, overall pressure ratio, and turbine inlet temperature have more t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuel Efficiency
Fuel efficiency (or fuel economy) is a form of thermal efficiency, meaning the ratio of effort to result of a process that converts chemical energy, chemical potential energy contained in a carrier (fuel) into kinetic energy or Mechanical work, work. Overall fuel efficiency may vary per device, which in turn may vary per application, and this spectrum of variance is often illustrated as a continuous energy profile. Non-transportation applications, such as Industrial sector, industry, benefit from increased fuel efficiency, especially fossil fuel power plants or industries dealing with combustion, such as ammonia production during the Haber process. In the context of transport, fuel economy is the energy efficiency in transportation, energy efficiency of a particular vehicle, given as a ratio of distance traveled per unit of Motor fuel, fuel consumed. It is dependent on several factors including engine efficiency, transmission (mechanics), transmission design, and tire design. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney Canada PT6
The Pratt & Whitney Canada PT6 is a turboprop aircraft engine produced by Pratt & Whitney Canada. Its design was started in 1958, it first ran in February 1960, first flew on 30 May 1961, entered service in 1964, and has been continuously updated since. The PT6 consists of two basic sections: a gas generator with accessory gearbox, and a free-power turbine with reduction gearbox. In aircraft, the engine is often mounted "backwards," with the intake at the rear and the exhaust at the front, so that the turbine is directly connected to the propeller. Many variants of the PT6 have been produced, not only as turboprops but also as turboshaft engines for helicopters, land vehicles, hovercraft, and boats; as auxiliary power units; and for industrial uses. By November 2015, 51,000 had been produced, which had logged 400 million flight hours from 1963 to 2016. It is known for its reliability, with an in-flight shutdown rate of 1 per 651,126 hours in 2016. The PT6A turboprop engine c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney Canada
Pratt & Whitney Canada (PWC or P&WC) is a Canada-based aircraft engine manufacturer. PWC's headquarters are in Longueuil, Quebec, south of Montreal. It is a division of the larger US-based Pratt & Whitney (P&W), itself a business unit of RTX Corporation. United Technologies had given PWC a world mandate for small and medium aircraft engines while P&W's US operations develop and manufacture larger engines. Although PWC is a division of P&W, it does its own research, development and marketing as well as the manufacturing of its engines. The company currently has about 10,000 employees worldwide, with 6,000 of them in Canada. History The Canadian Pratt & Whitney Aircraft Company, Ltd. was founded in November 1928 to act as a service centre for P&W aircraft engines. During World War II, it assembled Pratt & Whitney Wasp series engines built in the U.S. In 1952, the production of Wasp engines was transferred to Canadian Pratt & Whitney so P&W could concentrate on developing jet en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continental T51
The Continental CAE T51 was a small turboshaft engine produced by Continental Aviation and Engineering (CAE) under license from Turbomeca. A development of the Artouste, it was followed by three additional turboshaft engines, the T72, the T65, and the T67. However, none of these engines, including the T51, entered full production. CAE abandoned turboshaft development in 1967 after the XT67 lost to the Pratt & Whitney Canada PT6T (T400) to power the Bell UH-1N Twin Huey. Variants and derivatives ;XT51-1: (Model 210) Based on the Turbomeca Artouste I; 280 shp. ;XT51-3: (Model 220-2) Based on the Turbomeca Artouste II; 425 shp. ;XT72: (Model 217-5) Based on the Turbomeca Astazou; 600 shp. ;XT65: (Model 217-10) A scaled-down version of the Astazou; competed against the Allison T63 to power the Light Observation Helicopter The Light Observation Helicopter (LOH) program was a United States Army program to evaluate, develop and field a light scout helicopter to replace the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valhalla Helicopters (C-FPSZ) Bell 205A-1 (cropped)
In Norse mythology, Valhalla ( , ; , )Orchard (1997:171–172) is described as a majestic hall located in Asgard and presided over by the god Odin. There were five possible realms the soul could travel to after death. The first was Fólkvangr, ruled by the goddess Freyja. The second was Hel, ruled by Hel, Loki's daughter. The third was that of the goddess Rán. The fourth was the Burial Mound where the dead could live. The fifth and last realm was Valhalla, ruled by Odin and was called the Hall of Heroes. The masses of those killed in combat (known as the einherjar), along with various legendary Germanic heroes and kings, live in Valhalla until Ragnarök, when they will march out of its many doors to fight in aid of Odin against the jötnar. Valhalla was idealized in Viking culture and gave the Scandinavians a widespread cultural belief that there is nothing more glorious than death in battle. The belief in a Viking paradise and eternal life in Valhalla with Odin may have g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell UH-1 Iroquois Variants
The Bell UH-1 Iroquois military helicopter, first introduced in 1959, is the first production member of Bell Helicopter's prolific Huey family of helicopters, and was itself developed in over twenty variants, which are listed below. XH-40 and YH-40 The first Bell helicopter to use a turbine engine was a modified Model 47 (designated XH-13F), which had its initial flight in October 1954. The U.S. Army began a competition for a new helicopter for general utility and medical/casualty evacuation in 1955. In June 1955, Bell Helicopter was awarded a contract to develop the next generation turbine-powered utility helicopter for the U.S. Army. The resulting Bell Model 204 was designated XH-40 by the U.S. military and first flew on 22 October 1956. Two more prototypes were built in 1957, and six YH-40 pre-production helicopters were delivered in 1958.Donald, David, ed. "Bell 204". "Bell 205". ''The Complete Encyclopedia of World Aircraft''. Barnes & Nobel Books, 1997. . The YH- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Ground Self Defense Force
The , , also referred to as the Japanese Army, is the land warfare branch of the Japan Self-Defense Forces. Created on July 1, 1954, it is the largest of the three service branches. New military guidelines, announced in December 2010, direct the Japan Self-Defense Forces away from their Cold War focus on the Soviet Union to a new focus on China, especially in respect of the dispute over the Senkaku Islands. The JGSDF operates under the command of the chief of the ground staff, based in the city of Ichigaya, Shinjuku, Tokyo. The present chief of staff is General Yasunori Morishita. The JGSDF numbered 150,700 soldiers in 2023. History 20th century Soon after the end of the Pacific War in 1945 with Japan accepting the Potsdam Declaration, the Imperial Japanese Army and Imperial Japanese Navy were dismantled by the orders of Supreme Commander for the Allied Powers (SCAP). Both were replaced by the United States Armed Forces occupation force, which assumed responsibility for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuji Heavy Industries
, formerly , is a Japanese multinational corporation and conglomerate primarily involved in both terrestrial and aerospace transportation manufacturing. It is best known for its line of Subaru automobiles. Founded in 1953, the company was named Fuji Heavy Industries until 2017. The company's aerospace division is a defense contractor to the Japanese government, manufacturing Boeing and Lockheed Martin helicopters and airplanes under license. This same division is a global development and manufacturing partner to both companies. History Fuji Heavy Industries traces its roots to the Nakajima Aircraft Company, a leading supplier of airplanes to the Japanese government during World War II. At the end of World War II, Nakajima was broken up by the Occupation of Japan, Allied Occupation government under ''keiretsu'' legislation, and by 1950 part of the separated operation was already known as Fuji Heavy Industries. FHI was incorporated on July 15, 1953, when five Japanese companies, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
