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Yakovlev Yak-50 (1975)
The Yakovlev Yak-50 (russian: Яковлев Як-50) aerobatic aircraft is a single-seat all-metal low-wing monoplane with retractable main wheels and exposed tail wheel. The control surfaces are fabric-covered to save weight. The aircraft is not equipped with flaps. The supercharged engine may be the Vedeneyev M14P (standard production line version), M14PF or M14R, producing between 360 and 450 hp and driving the propeller via a reduction gearbox. The landing gear, brakes and engine starter are operated by compressed air. Replenished by an engine-driven compressor, the main and emergency air bottles are contained within the forward fuselage between the firewall and fuel tanks. The Yak-50 has fine handling characteristics enhanced by a relatively high power-to-weight ratio. It has a tough and agile airframe - the type was twice World Aerobatic Champion. It has been used as a military trainer by several countries. Aircraft serving with the Soviet National Aerobatic team ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yakovlev
The JSC A.S. Yakovlev Design Bureau (russian: ОАО Опытно-конструкторское бюро им. А.С. Яковлева) is a Russian aircraft designer and manufacturer (design office prefix Yak). Its head office is in Aeroport District, Northern Administrative Okrug, Moscow. Overview The bureau formed in 1934 under designer Alexander Sergeyevich Yakovlev as OKB-115 (the design bureau has its own production base at the facility No.115), but dates its birth from 12 May 1927, the day of maiden flight of the AIR-1 aircraft developed within the Department of Light Aircraft of GUAP (Head Agency of Aviation Industry) under the supervision of A.S. Yakovlev. During World War II Yakovlev designed and produced a famed line of fighter aircraft. Irkut acquired Yakovlev in April 2004. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yakovlev Yak-18
The Yakovlev Yak-18 (russian: Яковлев Як-18; NATO reporting name Max) is a tandem two-seat military primary trainer aircraft manufactured in the Soviet Union. Originally powered by one 119 kW (160 hp) Shvetsov M-11FR-1 radial piston engine, it entered service in 1946. It was also produced in China as the Nanchang CJ-5. Design and development A member of the second generation of Russian aircraft designers, and best known for fighter designs, Alexander Sergeyevich Yakovlev always retained a light aircraft design section. In May 1945, Yakovlev initiated design of the Yak-18 two-seat primary trainer. He designed it to replace the earlier Yakovlev UT-2 and Yakovlev Yak-5 in service with the Soviet Air Forces and DOSAAF (Voluntary Society for Collaboration with the Army, Air Force and Navy, which sponsored aero clubs throughout the USSR). In 1944, an advanced version of the UT-2 had been built with many of the features of the new Yak-18. The new aircraft flew a yea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yakovlev Yak-52
The Yakovlev Yak-52 (russian: Яковлев Як-52) is a Soviet primary trainer aircraft which first flew in 1976. It was produced in Romania from 1977 to 1998 by Aerostar, as ''Iak-52'', which gained manufacturing rights under agreement within the former COMECON socialist trade organisation. The Yak-52 was designed as an aerobatic trainer for students in the Soviet DOSAAF training organisation, which trained civilian sport pilots and military pilots. Currently the Yak-52 is used in the Fédération Aéronautique Internationale (FAI) World Aerobatic Yak 52 Competition, a popular powered aircraft one-design World Aerobatic Championship. Design and development A descendant of the single-seat competition aerobatic Yakovlev Yak-50, the all-metal Yak-52 is powered by a 268 kW (360 hp) Vedeneyev M14P nine-cylinder radial engine. Since the aircraft was designed to serve as a military trainer, the development of the aircraft incorporates a number of features to be foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supercharged
In an internal combustion engine, a supercharger compresses the intake gas, forcing more air into the engine in order to produce more power for a given displacement. The current categorisation is that a supercharger is a form of forced induction that is mechanically powered (usually by a belt from the engine's crankshaft), as opposed to a turbocharger, which is powered by the kinetic energy of the exhaust gasses. However, up until the mid-20th century, a turbocharger was called a "turbosupercharger" and was considered a type of supercharger. The first supercharged engine was built in 1878, with usage in aircraft engines beginning in the 1910s and usage in car engines beginning in the 1920s. In piston engines used by aircraft, supercharging was often used to compensate for the lower air density at high altitudes. Supercharging is less commonly used in the 21st century, as manufacturers have shifted to turbochargers to reduce fuel consumption and/or increase power outputs. Des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DOSAAF
DOSAAF (russian: ДОСААФ), full name ''Volunteer Society for Cooperation with the Army, Aviation, and Navy'' (russian: Добровольное общество содействия армии, авиации и флоту), was a paramilitary sport organization in the Soviet Union, concerned mainly with weapons, automobiles and aviation. The society was established in 1927 as OSOAVIAKhIM and from 1951 to 1991 carried the name of DOSAAF. The society was preserved in some post-Soviet Republics, e.g. Russia and Belarus, although these may use a different name. In Ukraine, for example, the counterpart is "Society of Assistance to Defense of Ukraine". In Russia it was reformed in December 1991 as the Russian Defense Sports-Technical Organization (ROSTO; russian: Российская оборонная спортивно-техническая организация – РОСТО). In December 2009, ROSTO was renamed DOSAAF Russia. For Belarus, see DOSAAF (Belarus). The s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yak-55
The Yakovlev Yak-55 is a single-seat aerobatic aircraft. Pilots flying the Yak-55 have won several world aerobatic championships.Gunston, 1997 Development The Soviet team in the 1976 World Aerobatic Championship, although dominating the championship, finishing first and second in the individual competition and also winning the team and women's competitions in their Yakovlev Yak-50s,Smith, ''Flight International'', 21 August 1976, pp. 437–439. were impressed by the performance of competing foreign aircraft, which could carry out the required manoeuvers in less space than the Yak-50. A team in the Yakovlev design bureau, led by Sergei Yakovlev, and with V. P. Kondratiev and D. K. Drach as chief engineers, therefore set out to design an all-new dedicated aerobatic aircraft, unrelated to the Yak-50, which would be able to match the tight, low-speed style of Western aircraft.Gordon, Komissarov and Komissarov 2005, p. 290.Gunston and Gordon 1997, p. 209. The resulting design, the Y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Su-26
More than 50 different modifications and experimental vehicles based on the T-26 light infantry tank chassis were developed in the USSR in the 1930s, with 23 modifications going into series production. The majority were armoured combat vehicles: flame tanks, artillery tractors, radio-controlled tanks (teletanks), military engineering vehicles, self-propelled guns and armoured personnel carriers. They were developed at the Leningrad Factory of Experimental Mechanical Engineering (from 1935 known as the Factory No. 185 named after S.M. Kirov) by talented Soviet engineers P.N. Syachentov, S.A. Ginzburg, L.S. Troyanov, N.V. Tseits, B.A. Andryhevich, M.P. Zigel and others. Many Soviet tank engineers were declared "enemies of the nation" and repressed during Stalin's Great Purge from the middle of the 1930s. As a result, work on self-propelled guns and armoured carriers ceased in the USSR during that time. T-26 light tanks were also modified into armoured combat vehicles in the field ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithuanian National Defence Volunteer Forces
The National Defence Volunteer Forces or NDVF ( lt, Krašto apsaugos savanorių pajėgos [], previously []) is a branch of the Lithuanian Armed Forces. Volunteer forces were officially established on 17 January 1991 by the law of the Supreme Council of Lithuania on the National Defence Volunteer Service providing basis for establishing Voluntary National Defence Service. This decision made legal already existing volunteer formations that began appearing as early as 1990. Voluntary National Defence Service was reorganised into the National Defence Volunteer Force. In 2003 Volunteer Force was integrated into the Lithuanian Land Force. Tasks of volunteer soldiers were inevitably altered when Lithuania became a full-fledged member of NATO: approach of territorial defence was changed into territorial defence and training of modern active reserve. There are around 5000 volunteers and around 800 professional soldiers in the force. History Origins The NDVF's history is somewhat li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clark YH
Clark Y is the name of a particular airfoil profile, widely used in general purpose aircraft designs, and much studied in aerodynamics over the years. The profile was designed in 1922 by Virginius E. Clark using thickness distribution of the German-developed Goettingen 398 airfoil.Piccirillo, Albert, "The Clark Y Airfoil - A Historical Retrospective," SAE/AIAA paper 2000-01-5517, presented at the World Aviation Congress & Exposition, October 10, 2000, San Diego, California. The airfoil has a thickness of 11.7 percent and is flat on the lower surface aft of 30 percent of chord. The flat bottom simplifies angle measurements on propellers, and makes for easy construction of wings. For many applications the Clark Y has been an adequate airfoil section; it gives reasonable overall performance in respect of its lift-to-drag ratio, and has gentle and relatively benign stall characteristics. But the flat lower surface is not optimal from an aerodynamic perspective, and it is rarely used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vedeneyev M-14P
The Vedeneyev M14P is a Russian nine-cylinder, four-stroke, air-cooled, petrol-powered radial engine. Producing , its design dates from the 1940s (Kotelnikov 2005), and is itself a development of the Ivchenko AI-14 engine. The engine has been used extensively by the Yakovlev and Sukhoi Design Bureaus. The M14P is also used in some experimental aircraft and kit designs such as the Murphy Moose, Radial Rocket, Pitts Model 12, and others. The M14PF is a version of the M14P. Design and development The engine's intake system uses a gear driven supercharger and an automatic-mixture type carburetor. Power is transmitted to the propeller via a reduction gearbox. In addition to the carburetor, the engine has a speed governor, two magnetos, mechanical fuel pump, generator, and an oil pump. It is started pneumatically, and remains fully operational during inverted flight. Unlike most American piston-type aero-engines, which turn to the right (clockwise) when viewed from the cockpit, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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