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Aviatik Alliance Aleks-251
The Aviatik Alliance Aleks-251 is a twin engine, parasol wing amphibious aircraft designed and built in Russia in the early 2010s. It can carry up to six passengers. Design and development The Aleks-251 has had a long development time. The project was first made public in 2003 by the Rida design bureau, who intended to make the first flight in late 2004. There were no further progress reports until the foundation of the Aviatik Alliance Company and the appearance of the near-complete prototype at the Moscow Salon in August 2009. The aircraft flew for the first time on 10 September 2010. The Aleks-251 is mostly constructed of metal, only using composites in the nosecone, engine cowlings and fin tip. It has a parallel chord, square tipped wing with a full-span combination of slotted ailerons and flaps. The parasol configuration allows the twin 127 kW (170 hp) LOM 332S inverted inline engines to be mounted forward of and under the wing, close together. The wing is bra ... [...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] |
Aircraft With Retractable Conventional Landing Gear
An aircraft ( aircraft) is a vehicle that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or the dynamic lift of an airfoil, or, in a few cases, direct downward thrust from its engines. Common examples of aircraft include airplanes, rotorcraft (including helicopters), airships (including blimps), gliders, paramotors, and hot air balloons. Part 1 (Definitions and Abbreviations) of Subchapter A of Chapter I of Title 14 of the U. S. Code of Federal Regulations states that aircraft "means a device that is used or intended to be used for flight in the air." The human activity that surrounds aircraft is called ''aviation''. The science of aviation, including designing and building aircraft, is called ''aeronautics.'' Crewed aircraft are flown by an onboard pilot, whereas unmanned aerial vehicles may be remotely controlled or self-controlled by onboard computers. Aircraft may be classified by different criteria, such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasol-wing Aircraft
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplane (aeronautics), 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 (aeronautics), bracing can be used to improve structural efficiency, reducing weight and cost. For a wing of a given size, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviatik Alliance Aircraft
Automobil und Aviatik AG was a German aircraft manufacturer during World War I. The company was established at Mülhausen (today in France) in 1909 and soon became one of the country's leading producers of aircraft. It relocated to Freiburg in 1914 and to Leipzig in 1916 and established a subsidiary in Vienna as Österreichisch-Ungarische Flugzeugfabrik Aviatik. During the war, the company became best known for its reconnaissance aircraft, the B.I and B.II, although the Austro-Hungarian subsidiary also produced a number of its own designs, including fighters such as the D.I. History The company was founded in December 1909 by the Alsatian Georges Chatel. II cover page It started with the license-production of French aircraft; Hanriot monoplanes and Farman biplanes. From 1912, the factory started building its own successful biplanes, designed by Robert Wild. Just at the beginning of World War One, on 1 August 1914 the company was relocated to Freiburg due to French threat, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twin Piston-engined Tractor Aircraft
Twins are two offspring produced by the same pregnancy.MedicineNet > Definition of Twin Last Editorial Review: 19 June 2000 Twins can be either ''monozygotic'' ('identical'), meaning that they develop from one zygote, which splits and forms two embryos, or ''dizygotic'' ('non-identical' or 'fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell. Since identical twins develop from one zygote, they will share the same sex, while fraternal twins may or may not. In very rare cases, fraternal or (semi-) identical twins can have the same mother and different fathers ( heteropaternal superfecundation). In contrast, a fetus that develops alone in the womb (the much more common case in humans) is called a ''singleton'', and the general term for one offspring of a multiple birth is a ''multiple''. Unrelated look-alikes whose resemblance parallels that of twins are referred to as doppelgänger. Statistics The human twin birth rate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibious Aircraft
An amphibious aircraft, or amphibian, is an aircraft that can Takeoff, take off and Landing, land on both solid ground and water. These aircraft are typically Fixed-wing aircraft, fixed-wing, though Amphibious helicopter, amphibious helicopters do exist as well. Fixed-wing amphibious aircraft are seaplanes (flying boats and floatplanes) which are equipped with Landing gear, retractable wheels, at the expense of extra weight and complexity, plus diminished range and fuel economy compared with planes designed specifically for land-only or water-only operation. Design Floatplanes often have floats that are interchangeable with wheeled landing gear (thereby producing a conventional land-based aircraft). However, in cases where this is not practical, amphibious floatplanes, such as the amphibious version of the de Havilland Canada DHC-3 Otter, DHC Otter, incorporate retractable wheels within their floats. Some amphibians are fitted with reinforced keels which act as skis, allowing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2010s Russian Civil Utility Aircraft
1 (one, unit, unity) is a number, numeral, and glyph. It is the first and smallest positive integer of the infinite sequence of natural numbers. This fundamental property has led to its unique uses in other fields, ranging from science to sports, where it commonly denotes the first, leading, or top thing in a group. 1 is the unit of counting or measurement, a determiner for singular nouns, and a gender-neutral pronoun. Historically, the representation of 1 evolved from ancient Sumerian and Babylonian symbols to the modern Arabic numeral. In mathematics, 1 is the multiplicative identity, meaning that any number multiplied by 1 equals the same number. 1 is by convention not considered a prime number. In digital technology, 1 represents the "on" state in binary code, the foundation of computing. Philosophically, 1 symbolizes the ultimate reality or source of existence in various traditions. In mathematics The number 1 is the first natural number after 0. Each natural number, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Direction Finder
An automatic direction finder (ADF) is a marine or aircraft Radio navigation, radio-navigation instrument that automatically and continuously displays the relative bearing from the ship or aircraft to a suitable radio station. ADF receivers are normally tuned to aviation or marine NDBs (Non-Directional Beacon) operating in the LW band between 190 – 535 kHz. Like RDF (Radio direction finder, Radio Direction Finder) units, most ADF receivers can also receive medium wave (AM) broadcast stations, though these are less reliable for navigational purposes. The operator tunes the ADF receiver to the correct frequency and verifies the identity of the beacon by listening to the Morse code signal transmitted by the NDB. On marine ADF receivers, the motorized ferrite-bar antenna atop the unit (or remotely mounted on the masthead) would rotate and lock when reaching the null of the desired station. A centerline on the antenna unit moving atop a compass rose indicated in degrees the bea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EFIS
In aviation, an electronic flight instrument system (EFIS) is a flight instrument display system in an aircraft cockpit that displays flight data electronically rather than electromechanically. An EFIS normally consists of a primary flight display (PFD), multi-function display (MFD), and an engine indicating and crew alerting system (EICAS) display. Early EFIS models used cathode-ray tube (CRT) displays, but liquid crystal displays (LCD) are now more common. The complex electromechanical attitude director indicator (ADI) and horizontal situation indicator (HSI) were the first candidates for replacement by EFIS. Now, however, few flight deck instruments cannot be replaced by an electronic display. Display units Primary flight display (PFD) On the flight deck, the display units are the most obvious parts of an EFIS system, and are the features that lead to the term ''glass cockpit''. The display unit that replaces the artificial horizon is called the primary flight dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruza, Ruzsky District, Moscow Oblast
Ruza () is a types of inhabited localities in Russia, town and the administrative center of Ruzsky District in Moscow Oblast, Russia, located on the Ruza River (a tributary of the Moskva River) west of Moscow. Population: History It was first mentioned in 1339, as a part of the Principality of Zvenigorod. It became a part of the Grand Duchy of Moscow in the early 16th century. The town was a fortress which protected Moscow from the west. During World War II, Ruza was occupied by the Germans from October 25, 1941, to January 17, 1942. Administrative and municipal status Within the subdivisions of Russia#Administrative divisions, framework of administrative divisions, Ruza serves as the administrative center of Ruzsky District.Resolution #123-PG As an administrative division, it is incorporated within Ruzsky District as the Town of district significance, Town of Ruza. As a subdivisions of Russia#Municipal divisions, municipal division, the Town of Ruza is incorporated within Ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turboprops
A turboprop is a gas turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. Fuel is then added to the compressed air in the combustor, where the fuel-air mixture then combusts. The hot combustion gases expand through the turbine stages, generating power at the point of exhaust. Some of the power generated by the turbine is used to drive the compressor and electric generator. The gases are then exhausted from the turbine. In contrast to a turbojet or turbofan, the engine's exhaust gases do not provide enough power to create significant thrust, since almost all of the engine's power is used to drive the propeller. Technological aspects Exhaust thrust in a turboprop is sacrificed in favor of shaft power, which is obtained by extracting additional power (beyond that necessary to drive the compressor) from turbine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
