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MI 17
The Mil Mi-17 (NATO reporting name: Hip) is a Soviet-designed Russian military helicopter family introduced in 1975 (Mi-8M), continuing in production at two factories, in Kazan and Ulan-Ude. It is known as the Mi-8M series in Russian service. The helicopter is mostly used as a medium twin-turbine transport helicopter, as well as an armed gunship version. Development Developed from the basic Mi-8 airframe, the Mi-17 was fitted with the larger Klimov TV3-117MT engines, rotors, and transmission developed for the Mi-14, along with fuselage improvements for heavier loads. Optional engines for " hot and high" conditions are the 1545 kW (2070 shp) Isotov TV3-117VM. Recent exports to China and Venezuela for use in high mountains have the new Klimov VK-2500 version of the Klimov TV3-117 engine with FADEC control. The designation Mi-17 is for export; Russian armed forces call it Mi-8MT. The Mi-17 can be recognized because it has the tail rotor on the port side instead of th ... [...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] |
Klimov
The JSC Klimov (or Joint Stock Company Klimov) presently manufactures internationally certified gas turbine engines, main gearboxes and accessory drive gearboxes for transport aircraft. Originally established as ''Kirill Klimov Experimental Design Bureau'' in Saint-Petersburg under the direction of (Влади́мир Я́ковлевич Кли́мов) (1892–1962), Klimov designed engines for Soviet aircraft based on Renault aircraft engine designs. It may have used the designation Aircraft Repair Factory (aviazavod, ARZ) 117 during the Soviet period. History The Klimov OKB was formed in the early 1930s to produce and improve upon the liquid-cooled Hispano-Suiza 12Y V-12 piston engine for which the USSR had acquired a license. At that time Klimov also manufactured motorcycles. In 1946 the British government allowed Rolls-Royce to sell a number of Nene and Derwent V turbojet engines to the Soviet Union. Klimov OKB was given the task of "metrifying" the British designs, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Helicopters
JSC Russian Helicopters (russian: Вертолёты России ''Vertolyoty Rossii'') is a helicopter design and manufacturing company headquartered in Moscow, Russia. The company designs and manufactures civilian and military helicopters. The company's principal shareholder is Rostec. It is the world's 24th-largest defence contractor measured by 2012 (its best year in the 21st century) defence revenues, and the second-largest based in Russia (after Almaz-Antey). History The company attempted to stage an IPO on the London Stock Exchange in May 2011, but failed to fill the order book at the expected valuation of $2 billion. In 2011 Russian Helicopters and the Italian company AgustaWestland agreed to establish HeliVert, a joint company, in order to start production in Russia of the AW139 twin-engine multipurpose helicopter. The production plant is located in Tomilino, Moscow Region. In 2016 the company delivered 189 aircraft to customers in 13 countries. In the same year, it ende ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harbin Z-20
The Harbin Z-20 (Chinese: 直-20; official codename Chinese: “神雕”, "Divine Eagle") is a Chinese medium-lift utility helicopter produced by the Harbin Aircraft Industry Group (HAIG). It was first flown on 23 December 2013 and has a maximum takeoff weight in the range of . The Z-20 can operate from locations above in altitude as well as from the ''Liaoning'' aircraft carrier. It is regarded to be comparable in performance to the US-made Sikorsky UH-60 Black Hawk helicopter, of which the civilian Sikorsky S-70C-2 variant has been used by the People's Liberation Army since 1984. Development The People's Liberation Army Air Force (PLAAF) has had a requirement for a high-altitude medium utility helicopter that can operate in the mountainous regions in China since the 1980s. In 1984, the PLAAF acquired 24 Sikorsky S-70C-2s with enhanced General Electric T700-701A engines. These 24 Sikorsky S-70C-2 helicopters are the civilian version of the military UH-60 Black Hawk, but wen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kevlar
Kevlar (para-aramid) is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora. Developed by Stephanie Kwolek at DuPont in 1965, the high-strength material was first used commercially in the early 1970s as a replacement for steel in racing tires. It is typically spun into ropes or fabric sheets that can be used as such, or as an ingredient in composite material components. Kevlar has many applications, ranging from bicycle tires and racing sails to bulletproof vests, all due to its high tensile strength-to-weight ratio; by this measure it is five times stronger than steel. It is also used to make modern marching drumheads that withstand high impact; and for mooring lines and other underwater applications. A similar fiber called Twaron with the same chemical structure was developed by Akzo in the 1970s; commercial production started in 1986, and Twaron is now manufactured by Teijin. History Poly-paraphenylene terephthalamide (K2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auxiliary Power Unit
An auxiliary power unit (APU) is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft and naval ships as well as some large land vehicles. Aircraft APUs generally produce 115 V AC voltage at 400 Hz (rather than 50/60 Hz in mains supply), to run the electrical systems of the aircraft; others can produce 28 V DC voltage. APUs can provide power through single or three-phase systems. Transport aircraft History During World War I, the British Coastal class blimps, one of several types of airship operated by the Royal Navy, carried a ABC auxiliary engine. These powered a generator for the craft's radio transmitter and, in an emergency, could power an auxiliary air blower. One of the first military fixed-wing aircraft to use an APU was the British, World War 1, Supermarine Nighthawk, an anti-Zeppelin night fighter.Andrews and Morgan 1987, p. 21. During World War II, a number of large Ameri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Czech Republic
The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The Czech Republic has a hilly landscape that covers an area of with a mostly temperate continental and oceanic climate. The capital and largest city is Prague; other major cities and urban areas include Brno, Ostrava, Plzeň and Liberec. The Duchy of Bohemia was founded in the late 9th century under Great Moravia. It was formally recognized as an Imperial State of the Holy Roman Empire in 1002 and became a kingdom in 1198. Following the Battle of Mohács in 1526, the whole Crown of Bohemia was gradually integrated into the Habsburg monarchy. The Protestant Bohemian Revolt led to the Thirty Years' War. After the Battle of White Mountain, the Habsburgs consolidated their rule. With the dissolution of the Holy Empire in 1806, the Cro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Czech Air Force
"The air is our sea" , colours = , colours_label = , march = , mascot = , anniversaries = , equipment = , equipment_label = , battles = , decorations = , battle_honours = , battle_honours_label = , flying_hours = , website = , commander1 = Brigade General Petr Čepelka , commander1_label = Air Force Commander , notable_commanders = , identification_symbol = , identification_symbol_label = Roundel , identification_symbol_2 = , identification_symbol_2_label = Flag , aircraft_attack = L-159A , aircraft_bomber = , aircraft_electronic = F-35 on order , aircraft_fighter = JAS 39 Gripen, F-35A on order , aircraft_helicopter = Mi-8, Mi-17, W-3A, Mi-24, UH-1Y Venom on order , aircraft_helicopter_attack = AH-1Z Viper on order , aircraft_helicopter_cargo = , aircraft_helicopter_multirole = , aircraft_helicopter_observation = , aircraft_helicopter_trainer = , aircraft_helicopter_utility = , aircraft_interceptor = , aircraft_pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bleed Air
Bleed air is compressed air taken from the compressor stage of a gas turbine upstream of its fuel-burning sections. Automatic air supply and cabin pressure controller (ASCPCs) valves bleed air from high or low stage engine compressor sections. Low stage air is used during high power setting operation, and high during descent and other low power setting operations. Bleed air from that system can be utilized for internal cooling of the engine, cross-starting another engine, engine and airframe anti-icing, cabin pressurization, pneumatic actuators, air-driven motors, pressurizing the hydraulic reservoir, and waste and water storage tanks. Some engine maintenance manuals refer to such systems as "customer bleed air". Bleed air is valuable in an aircraft for two properties: high temperature and high pressure (typical values are 200–250 °C and 275 kPa (40 PSI), for regulated bleed air exiting the engine pylon for use throughout the aircraft). Uses In civil aircraft, bleed air' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FADEC
A full authority digital engine (or electronics) control (FADEC) is a system consisting of a digital computer, called an "electronic engine controller" (EEC) or "engine control unit" (ECU), and its related accessories that control all aspects of aircraft engine performance. FADECs have been produced for both piston engines and jet engines. History The goal of any engine control system is to allow the engine to perform at maximum efficiency for a given condition. Originally, engine control systems consisted of simple mechanical linkages connected physically to the engine. By moving these levers the pilot or the flight engineer could control fuel flow, power output, and many other engine parameters. The mechanical/hydraulic engine control unit for Germany's BMW 801 piston aviation radial engine of World War II was just one notable example of this in its later stages of development. This mechanical engine control was progressively replaced first by analog electronic engine control ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klimov TV3-117
The Klimov TV3-117 is a Russian gas turbine aero engine. It is used in most medium lift, utility, and attack helicopters designed by the Mil and Kamov design bureaus. The TV3-117 turboshaft engine was developed in 1974. Later the Klimov TV3-117 was installed on 95% of all helicopters designed by Mil and Kamov Engineering Centre. The engine has been produced in many variants. Variants ;TV3-117: for Mi-24A (1972) ;TV3-117M: ("M" stands for "marine") – for Mi-14 helicopters incorporates special features to be used at sea. Mass production started in 1976 ;TV3-117MT: ("MT" stands for "modernized, transport") – for Mi-8MT/Mi-17 helicopters and their variants. Mass production started in 1977 ;TV3-117KM: ("KM" stands for "Kamov, marine") – for Ka-27 helicopters ;TV3-117V: ("V" stands for "high altitude") – for Mi-24 helicopters operated in the mountains (particularly in Afghanistan). Mass production started in 1980 ;TV3-117VK: ("VK" stands for "high altitude, Kamov") – a mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klimov VK-2500
The Klimov VK-2500 is a Russian turboshaft aero engine, a high power derivative of the TV3-117VMA engine, also for hot and high. Design It differs from the older versions in having an extended overhaul period of the engine hot components, extra gas-dynamic stability at varying duties, engine parameters accuracy and engine control quality, enhanced monitoring depth providing operation of the engine according to its technical condition and better weight characteristics and overall dimensions. Variants ;VK-2500-01 :Has a maximum continuous performance and a take-off performance. Powers Ka-52. ;VK-2500-02 :Has a maximum continuous performance and a take-off performance. Used by Ka-32, and Mi-35M, Mi-28N, Mi-28NE and Mi-28UB attack helicopters. ;VK-2500-03 :Has maximum continuous performance and a take-off performance. Used by Mi-8AMTSh-V/VA and Mi-171Sh transport helicopters. ;VK-2500P-01 :Equipped with revised FADEC. Rated at take-off power. Powers Mi-28NM. ;VK-2500M :Next ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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