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Praga E-51
The Praga E-51 is a Czechoslovakian reconnaissance aircraft and light bomber built by Praga in the 1930s. Development was halted by the annexation of Czechoslovakia by Germany, after only one prototype had been built. The appearance of the construction is very reminiscent of the contemporary twin engined fighter, the Fokker G.I from Holland. Design and development The unconventional twin-boom airplane project under Jaroslav Šlechta began in 1936 as a response to a Ministry of National Defence specification which called for the design and construction of a new reconnaissance aircraft to operate over combat zones. The short-range reconnaissance three-seater was to be capable of monitoring activity behind enemy lines; the requirement highlighted the importance of good view from the cockpit as well as of placement of the on-board cameras, which were to be able to collect as many shots as possible at as wide an angle as possible in one flyover. The new aircraft was to replace the a ... [...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] |
Letov Š-50
__NOTOC__ The Letov Š-50 was a 1930s prototype Czechoslovakia, Czechoslovak military general-purpose monoplane, designed and built by Letov Kbely, Letov.Orbis 1985, p. 2316 Development The Š-50 was an all-metal twin-engined low mid-wing monoplane that first flew in 1938. It was powered by two 420 hp (313 kW) Avia Rk.17 radial engines. It had a fixed landing gear and twin fins and rudders. Following the German occupation, development was stopped. Specifications References ;Notes ;Bibliography * * {{DEFAULTSORT:Letov S-50 Letov aircraft, S-50 1930s Czechoslovak military utility aircraft Mid-wing aircraft Aircraft first flown in 1938 Twin piston-engined tractor aircraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Sagitta I-MR
The Walter Sagitta was a Czechoslovakian, air-cooled, inverted V-12 engine that first ran in 1937. This was one of several smaller, low-mass medium power pre-war V-12 engines produced. With a displacement of 18.4 liters (1,123 cu in), it produced up to 373 kW (550 hp) at 2,500 rpm. Variants ;Sagitta I-MR: at 2,500rpm at - rated height ;Sagitta I-SR: at 2,500rpm at - rated height ;Sagitta II R.C.:, fully supercharged. Retrieved: 8 November 2012 ;Alfa Romeo 122: :Licensed production. Applications * Fokker D.XXIII * Praga E-51 * |
Walter Aircraft Engines
Walter Aircraft Engines is an aircraft engine manufacturer and former automotive manufacturer. Its notable products include the M601 turboprop. The company is based in Prague, Czech Republic. It has been a subsidiary of GE Aerospace since July 2008. History Josef Walter founded the company in 1911 to make motorcycles and motor tricycles. It started to make automobiles in 1913: initially its own models, and later the Fiat 508, 514, 522 and 524 under licence. By 1926 Walter was Czechoslovakia's fourth-largest car maker by sales volume. In 1929 it still held fourth place, and production peaked at 1,498 cars for the year. By 1932 Walter production had slumped to 217 cars for the year. The figure recovered to 474 in 1933, but fell again to 102 in 1936 and to only 13 in 1937. Walter ceased car production in 1954. From the early 1920s Walter also manufactured BMW aircraft engines under license, as well as its own family of air-cooled radial piston engines. In the 1930s Walter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avia Rk
AVIA () is a Soviet/Russian experimental pop band formed in Leningrad in 1986. AVIA released four studio albums and led the first wave of the Soviet bands which made their breakthrough in the West in the late 1980s. Band history AVIA was formed in September 1985 by the ex-members of Strannye Igry, multi-instrumentalists Nikolai Gusev, Alexey Rakhov and drummer Alexander Kondrashkin who were joined by Anton Adasinsky (guitars, vocals), saxophonists Elena Bobretsova and Alexey Merkushev, and performance artist Marat Timergazov who, supported by the ever growing cast of dancers and gymnasts created a peculiar mass pantomime comprising elements of 1920s constructivism, sports parades and the early Soviet visual culture clichés. Equally eclectic was the band's style, a mix of new wave rock, quasi-classical marches and synthpop. In 1987 AVIA received the special Press Award at the Rock Panorama musical festival and featured in Alexey Uchitel's film "Rock". The group's first album, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Sagitta
The Walter Sagitta was a Czechoslovakian, air-cooled, inverted V-12 engine that first ran in 1937. This was one of several smaller, low-mass medium power pre-war V-12 engines produced. With a displacement of 18.4 liters (1,123 cubic inch, cu in), it produced up to 373 kW (550 horsepower, hp) at 2,500 rpm. Variants ;Sagitta I-MR: at 2,500rpm at - rated height ;Sagitta I-SR: at 2,500rpm at - rated height ;Sagitta II R.C.:, fully supercharged. Retrieved: 8 November 2012 ;Alfa Romeo 122: :Licensed production. Applications *Fokker D.XXIII *Praga E-51 *Rogožarski R-313 *Savoia-Marchetti SM.86 *VEF I-16Specifications (Sagitta I-MR) See also References ;Notes ;Bibliogra ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praga FR
Praga is a district of Warsaw, Poland. It is on the east bank of the river Vistula. First mentioned in 1432, until 1791 it formed a separate town with its own city charter. History The historical Praga was a small settlement located at the eastern bank of the Vistula river, directly opposite the towns of Old Warsaw and Mariensztat, both being parts of Warsaw now. First mentioned in 1432, it derived its name from the Polish verb ''prażyć'', meaning ''to burn'' or ''to roast'', as it occupied a forested area that was burnt out to make place for the village. Separated from Warsaw by a wide river, it developed independently of the nearby city, and on 10 February 1648 king Władysław IV of Poland granted Praga with a city charter. However, as it was mostly a suburb and most buildings were wooden, the town was repeatedly destroyed by fires, floods and foreign armies. Currently the only surviving historical monument from that epoch is the Church of Our Lady of Loreto. Although t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevator (aeronautics)
Elevators are flight control surfaces, usually at the rear of an aircraft, which control the aircraft's flight dynamics, pitch, and therefore the angle of attack and the lift of the wing. The elevators are usually hinged to the tailplane or horizontal stabilizer (aircraft), stabilizer. They may be the only pitch control surface present, and are sometimes located at the front of the aircraft (early airplanes and canard (aeronautics), canards) or integrated into a rear "all-moving tailplane", also called a slab elevator or stabilator. Elevator control effectiveness The elevator is a usable up and down system that controls the plane, horizontal stabilizer usually creates a ''downward'' force which balances the nose down moment (physics), moment created by the wing lift force, which typically applies at a point (the wing center of lift) situated aft of the airplane's center of gravity. The effects of drag (physics), drag and changing the engine thrust may also result in pitch mome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudder
A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, airship, or other vehicle that moves through a fluid medium (usually air or water). On an airplane, the rudder is used primarily to counter adverse yaw and p-factor and is not the primary control used to turn the airplane. A rudder operates by redirecting the fluid past the hull or fuselage, thus imparting a turning or yawing motion to the craft. In basic form, a rudder is a flat plane or sheet of material attached with hinges to the craft's stern, tail, or afterend. Often rudders are shaped to minimize hydrodynamic or aerodynamic drag. On simple watercraft, a tiller—essentially, a stick or pole acting as a lever arm—may be attached to the top of the rudder to allow it to be turned by a helmsman. In larger vessels, cables, pushrods, or hydraulics may link rudders to steering wheels. In typical aircraft, the rudder is operated by pedals via mechanical linkages or hydraulics. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nacelle
A nacelle ( ) is a streamlined container for aircraft parts such as Aircraft engine, engines, fuel or equipment. When attached entirely outside the airframe, it is sometimes called a pod, in which case it is attached with a Hardpoint#Pylon, pylon or strut and the engine is known as a podded engine. In some cases—for instance in the typical "Farman Aviation Works, Farman" type Pusher configuration, "pusher" aircraft, or the World War II-era P-38 Lightning or SAAB J21—an aircraft cockpit may also be housed in a nacelle, rather than in a conventional fuselage. Etymology Like many aviation terms, the word comes from French language, French, in this case from a word for a small boat. Development file:Arado Ar 234V6 and Ar 234V8 front-view silhouettes.png, The development of the Arado Ar 234, merging the four nacelles into two The Arado Ar 234 was one of the first operational jet aircraft with engines mounted in nacelles. During its development, the four engines had four distin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mid-wing Aircraft
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple wings. A monoplane has inherently the highest efficiency and lowest drag of any wing configuration and is the simplest to build. However, during the early years of flight, these advantages were offset by its greater weight and lower manoeuvrability, making it relatively rare until the 1930s. Since then, the monoplane has been the most common form for a fixed-wing aircraft. Characteristics Support and weight The inherent efficiency of the monoplane is best achieved in the cantilever wing, which carries all structural forces internally. However, to fly at practical speeds the wing must be made thin, which requires a heavy structure to make it strong and stiff enough. External bracing can be used to improve structural efficiency, reducing weight and cost. For a wing of a given size, the weight reduction allows it to fly slower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aero A
Aero is a Greek prefix relating to flight and air. In British English, it is used as an adjective related to flight (e.g., as a shortened substitute for aeroplane). Aero, Ærø, or Aeros may refer to: Aeronautics Airlines and companies * Aero (American airline), an American airline operating public charter flights * Aero (Polish airline), a Polish airline founded in 1925 which later was merged into LOT * Aero Airlines, an Estonian airline owned by Finnair * Aero Commander, formerly known as Aero, a division of Rockwell International * Aero Cóndor, an airline based in Lima, Peru * Aero Contractors (Nigeria), a scheduled airline from Nigeria * Aero Contractors (United States), private charter company based in Smithfield, North Carolina * Aero O/Y, former name of Finnair * Aero Vodochody, a Czech aircraft manufacturer founded in 1919 * Aerocondor, Portuguese airline * Aeroflot, the flag carrier of the Russian Federation * Aerolíneas Argentinas, the flag carrier airline of Argentina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
