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Ka-92
The Kamov Ka-92 is a high-speed coaxial helicopter design proposed by Kamov of Russia in competition with the Mil Moscow Helicopter Plant for a $1.3 billion project by the Russian government for development of a high-speed helicopter. Design and development The Kamov Ka-92 is part of a program of the newly established Russian Helicopters company, intended to create a new generation of medium-class helicopters capable of cruising at about 500 km/h (312 mph) and flying over a distance of up to 1400 km. Its preliminary design and some specification data were unveiled at the HeliRussia 2009 exhibition near Moscow. The Ka-92 will feature a coaxial rotor system which is distinctive of Kamov products. As on the Mil Mi-X1 Mil Mi-X1 is a high-speed helicopter being proposed by Mil of Russia. The aircraft belongs to the same program as its competitor Kamov Ka-92 intended to create a new generation of middle-class helicopters cruising at about 500 km/h (312 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mil Mi-X1
Mil Mi-X1 is a high-speed helicopter being proposed by Mil of Russia. The aircraft belongs to the same program as its competitor Kamov Ka-92 intended to create a new generation of middle-class helicopters cruising at about 500 km/h (312 mph). Its preliminary design and early specifications were unveiled at HeliRussia 2009 exhibition near Moscow. The design is competing for a US$1.3 billion project by the Russian government and Kamov is the other competitor. Design The Mi-X1 is designed to have a take-off weight of just 10 tons, seat 25 passengers and fly to 1,500 km. It has one main rotor and a rear mount lift rotor. The helicopter's single main rotor means that in order to travel at high speeds it will have to overcome the retreating blade stall (RBS). This phenomenon occurs at airspeeds of some 300 km/h, and leads to vibrations that may ultimately destroy the rotor. Mil’s solution to fighting the onset of the RBS is to offload the rotor with the help of ... [...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] |
Sikorsky X2
The Sikorsky X2 is an experimental high-speed compound helicopter with coaxial rotors, developed by Sikorsky Aircraft, that made its first flight in 2008 and was officially retired in 2011. Design and development Sikorsky developed the X2 helicopter on a $50 million budget. The design includes expertise gathered from several earlier design projects. The S-69/XH-59A Advancing Blade Concept Demonstrator had shown that high speed was possible with a coaxial helicopter with auxiliary propulsion supplied using two jet engines, but that vibration and fuel consumption was excessive; the Cypher UAV expanded the company's knowledge of the unique aspects of coaxial flight control laws with a fly-by-wire aircraft; and the RAH-66 Comanche developed expertise in composite rotors and advanced transmission design. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coaxial Rotors
Coaxial rotors or coax rotors are a pair of helicopter rotors mounted one above the other on concentric shafts, with the same axis of rotation, but turning in opposite directions (contra-rotating). This rotor configuration is a feature of helicopters produced by the Russian Kamov helicopter design bureau. History The idea of coaxial rotors originates with Mikhail Lomonosov. He had developed a small helicopter model with coaxial rotors in July 1754 and demonstrated it to the Russian Academy of Sciences. In 1859, the British Patent Office awarded the first helicopter patent to Henry Bright for his coaxial design. From this point, coaxial helicopters developed into fully operational machines as we know them today. Two pioneering helicopters, the Corradino D'Ascanio-built "D'AT3" of 1930, and the generally more successful French mid-1930s ''Gyroplane Laboratoire'', both used coaxial rotor systems for flight. Design considerations Having two coaxial sets of rotors provides sym ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piasecki X-49
The Piasecki X-49 "SpeedHawk" is an American four-bladed, twin-engined experimental high-speed compound helicopter developed by Piasecki Aircraft. The X-49A is based on the airframe of a Sikorsky YSH-60F Seahawk, but utilizes Piasecki's proprietary vectored thrust ducted propeller (VTDP) design and includes the addition of lifting wings. The concept of the experimental program was to apply the VTDP technology to a production military helicopter to determine any benefit gained through increases in performance or useful load. "SpeedHawk" is a concept aircraft based on applying X-49A compounding concepts to a production UH-60 Black Hawk offering better performance, range, and increases in useful load. The "SpeedHawk" aircraft includes an SPU (third engine), high forward-swept wing concept, a 45-inch "fuselage plug" cabin extension, and several other drag reducing and performance-oriented improvements, including a rotor hub fairing, landing gear streamlining, and a fly-by-wire fligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russia
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the world, with its internationally recognised territory covering , and encompassing one-eighth of Earth's inhabitable landmass. Russia extends across Time in Russia, eleven time zones and shares Borders of Russia, land boundaries with fourteen countries, more than List of countries and territories by land borders, any other country but China. It is the List of countries and dependencies by population, world's ninth-most populous country and List of European countries by population, Europe's most populous country, with a population of 146 million people. The country's capital and List of cities and towns in Russia by population, largest city is Moscow, the List of European cities by population within city limits, largest city entirely within E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurocopter X3
Airbus Helicopters SAS (formerly Eurocopter Group) is the helicopter manufacturing division of Airbus. It is the largest in the industry in terms of revenues and turbine helicopter deliveries. Its head office is located at Marseille Provence Airport in Marignane, France, near Marseille. The main facilities of Airbus Helicopters are at its headquarters in Marignane, France, and in Donauwörth, Germany, with additional production plants in Brazil ( Helibras), Australia, Spain, Romania, the United Kingdom and the United States. The company was renamed from Eurocopter to Airbus Helicopters on 2 January 2014. In 2018, Airbus delivered 356 helicopters, a 54% share of the civil or parapublic market over five seats. History Airbus Helicopters was formed in 1992 as Eurocopter Group, through the merger of the helicopter divisions of Aérospatiale and DASA. The company's heritage traces back to Blériot and Lioré et Olivier in France and to Messerschmitt and Focke-Wulf in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kamov Aircraft
JSC Kamov (russian: Камов) is a Russian rotorcraft manufacturing company based in Lyubertsy, Russia. The Kamov Design Bureau ( design office prefix Ka) has more recently specialised in compact helicopters with coaxial rotors, suitable for naval service and high-speed operations. History Kamov was founded by Nikolai Ilyich Kamov, who started building his first rotary-winged aircraft in 1929, together with N. K. Skrzhinskii N is the fourteenth letter of the Latin alphabet. N or n may also refer to: Mathematics * \mathbb, the set of natural numbers * N, the field norm * N for ''nullae'', a rare Roman numeral for zero * n, the size of a statistical sample Sci .... Up to 1940, the year of Kamov plant establishment, they created many autogyros, including the TsAGI A-7-3, the only armed autogyro to see (limited) combat action. From 2002 AFK Sistema controlled a 51% stake in the company, with MiG controlling the remaining 49%. Kamov was sold to Oboronprom in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sikorsky S-97
The Sikorsky S-97 Raider is a high-speed scout and attack compound helicopter based on the Advancing Blade Concept (ABC) with a coaxial rotor system under development by Sikorsky Aircraft. Sikorsky planned to offer it for the United States Army's Armed Aerial Scout program, along with other possible uses.Trimble, Stephen"Sikorsky unveils S-97 for high-speed scout and attack helo" ''Flightglobal'', 20 October 2010. The S-97 made its maiden flight on 22 May 2015. Development Background Sikorsky's earliest attempt at a fast compound helicopter with stiff coaxial rotors was the Sikorsky S-69 (XH-59A) flown in the 1970s. Its top speed was over 260 knots but its excessive fuel consumption, vibration and complexity requiring the full-time attention of two pilots led to the program's cancellation. These problems were largely solved on another attempt by the Sikorsky X2 technology demonstrator in 2010. First proposed in response to a Request for Information for the Armed Aerial Scout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kamov Ka-90
The Kamov Ka-90 is a projected high-speed helicopter built by Kamov, a model of which was displayed at the HeliRussia 2008 trade show in April 2008. The concept is a hybrid design, flying like a helicopter for takeoff and landing and an aeroplane An airplane or aeroplane (informally plane) is a fixed-wing aircraft that is propelled forward by thrust from a jet engine, propeller, or rocket engine. Airplanes come in a variety of sizes, shapes, and wing configurations. The broad spectr ... in cruise flight. The company's general designer Sergei Mikheyev said that the project was started in 1985. Although not developed at that time, it was under consideration in 2008. - Fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kamov Ka-50
The Kamov Ka-50 "Black Shark" (russian: Чёрная акула, translit=Chyornaya akula, English: kitefin shark, NATO reporting name: Hokum A) is a Soviet/Russian single-seat attack helicopter with the distinctive coaxial rotor system of the Kamov design bureau. It was designed in the 1980s and adopted for service in the Russian army in 1995. It is manufactured by the Progress company in Arsenyev. It is used as a heavily armed scout helicopter. It has a rescue ejection system, rare for helicopters. During the late 1990s, Kamov and Israel Aerospace Industries developed a tandem-seat cockpit version, the Kamov Ka-50-2 "Erdogan" (russian: link=no, Эрдоган, tr, Erdoğan), to compete in Turkey's attack helicopter competition. Kamov also designed another two-seat variant, the Kamov Ka-52 "Alligator" (russian: link=no, Аллигатор, NATO reporting name: Hokum B). Development The Ka-50 is the production version of the V-80Sh-1 prototype. Production of the attack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turboshaft
A turboshaft engine is a form of gas turbine that is optimized to produce shaftpower 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 compressor, combustion chambers with ignitors and fuel nozzles, and one or more stages of turbine. The power section consists of additional stages of turbines, a gear reduction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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