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Mil Mi-30
The Mil Mi-30 Vintoplan was a Russian tiltrotor STOL/VTOL concept that originated in 1972. The Vintoplan would have been a transport aircraft for up to 19 passengers or two tons of cargo. Its purpose was to replace the Mi-8 and Mi-17 helicopters. Design and things The first tiltrotor aircraft companies were founded in the 1940s; the Vintoplan project was picked up and continued by these companies a few years after the first development. The Mil Design Bureau closely followed the tiltrotor projects at Bell Helicopters, and the concept that Bell proposed seemed to them convincing. In 1972 Mil designers initiated a similar design, the Mi-30. At the beginning of the 1980s, scientists and helicopter designers assembled a design and several layouts for this complicated aircraft, the original design of the Mil Mi-30 Vintoplan was expected to use a TV3-117 turboshaft engine with a four-bladed propeller rotor on each wing. The original design of the Mil Mi-30 had several problems: Aeroe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiltrotor
A tiltrotor is an aircraft that generates lift (force), lift and thrust, propulsion by way of one or more powered Helicopter rotor, rotors (sometimes called ''proprotors'') mounted on rotating shaft (mechanical engineering), shafts or nacelles usually at the ends of a fixed wing. Almost all tiltrotors use a transverse rotor design, with a few exceptions that use other multirotor layouts. Tiltrotor design combines the VTOL capability of a helicopter with the speed and range (aircraft), range of a conventional fixed-wing aircraft. For vertical flight, the rotors are angled so the plane of rotation is horizontal, generating lift the way a normal helicopter rotor does. As the aircraft gains speed, the rotors are progressively tilted forward, with the plane of rotation eventually becoming vertical. In this mode the rotors provide thrust as a propeller (aircraft), propeller, and the airfoil of the fixed wings takes over providing the lift via the forward motion of the entire aircra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Dynamics
Flight dynamics in aviation and spacecraft, is the study of the performance, stability, and control of vehicles flight, flying through the air or in outer space. It is concerned with how forces acting on the vehicle determine its velocity and attitude with respect to time. For a fixed-wing aircraft, its changing Orientation (geometry), orientation with respect to the local air flow is represented by two critical angles, the angle of attack of the wing ("alpha") and the angle of attack of the vertical tail, known as the slip (aerodynamics), sideslip angle ("beta"). A sideslip angle will arise if an aircraft yaws about its centre of gravity and if the aircraft sideslips bodily, i.e. the centre of gravity moves sideways.Flightwise - Volume 2 - Aircraft Stability And Control, Chris Carpenter 1997, Airlife Publishing Ltd., , p.145 These angles are important because they are the principal source of changes in the aerodynamic forces and moments applied to the aircraft. Spacecraft fligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-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 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abandoned Civil Aircraft Projects
Abandon, abandoned, or abandonment may refer to: Common uses * Abandonment (emotional), a subjective emotional state in which people feel undesired, left behind, insecure, or discarded * Abandonment (legal), a legal term regarding property ** Child abandonment, the extralegal abandonment of children ** Lost, mislaid, and abandoned property, legal status of property after abandonment and rediscovery * Abandonment (mysticism) Art, entertainment, and media Film * Abandon (film), ''Abandon'' (film), a 2002 film starring Katie Holmes * Abandoned (1949 film), ''Abandoned'' (1949 film), starring Dennis O'Keefe * Abandoned (1955 film), ''Abandoned'' (1955 film), the English language title of the Italian war film ''Gli Sbandati'' * Abandoned (2001 film), ''Abandoned'' (2001 film), a Hungarian film * Abandoned (2010 film), ''Abandoned'' (2010 film), starring Brittany Murphy * Abandoned (2015 film), ''Abandoned'' (2015 film), a television movie about the shipwreck of the ''Rose-Noëlle'' in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiltrotor Aircraft
A tiltrotor is an aircraft that generates lift and propulsion by way of one or more powered rotors (sometimes called ''proprotors'') mounted on rotating shafts or nacelles usually at the ends of a fixed wing. Almost all tiltrotors use a transverse rotor design, with a few exceptions that use other multirotor layouts. Tiltrotor design combines the VTOL capability of a helicopter with the speed and range of a conventional fixed-wing aircraft. For vertical flight, the rotors are angled so the plane of rotation is horizontal, generating lift the way a normal helicopter rotor does. As the aircraft gains speed, the rotors are progressively tilted forward, with the plane of rotation eventually becoming vertical. In this mode the rotors provide thrust as a propeller, and the airfoil of the fixed wings takes over providing the lift via the forward motion of the entire aircraft. Since the rotors can be configured to be more efficient for propulsion (e.g. with root-tip twist) and it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mil Aircraft
Mil, mil, or MIL may refer to: Places * Mil, Syria, a village in Syria * Mil, Azerbaijan, a municipality in Beylagan Rayon * Mil, Markazi, a village in Markazi Province, Iran * Metropolitan area of Milan ( IATA code: MIL), Italy (Milan is city in Italy) * Mill Hill Broadway railway station (National Rail station code: MIL), England * Miltenberg (district), (German vehicle registration code: MIL) * A common abbreviation for the U.S. city of Milwaukee, Wisconsin and its major professional sports teams: ** Milwaukee Brewers, the city's Major League Baseball team ** Milwaukee Bucks, the city's National Basketball Association team Business and organizations * Marine Industries Limited, a Canadian shipbuilder * Microsystems International Limited, a former Canadian semiconductor device manufacturer * Mil Moscow Helicopter Plant, a Russian helicopter manufacturer * '' Movimiento Ibérico de Liberación'' (Iberian Liberation Movement), a Catalan anti-Francoist group from 1971 to 197 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1970s Soviet Civil Utility Aircraft
Year 197 ( CXCVII) was a common year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Magius and Rufinus (or, less frequently, year 950 ''Ab urbe condita''). The denomination 197 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * February 19 – Battle of Lugdunum: Emperor Septimius Severus defeats the self-proclaimed emperor Clodius Albinus at Lugdunum (modern Lyon). Albinus commits suicide; legionaries sack the town. * Septimius Severus returns to Rome and has about 30 of Albinus's supporters in the Senate executed. After his victory he declares himself the adopted son of the late Marcus Aurelius. * Septimius Severus forms new naval units, manning all the triremes in Italy with heavily armed troops for war in the East. His soldiers embark on an artificial canal between the Tigris a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of VTOL Aircraft
This is a list of fixed-wing aircraft capable of vertical take-off and landing arranged under manufacturer. The list excludes helicopters, including compound helicopters and gyrocopters, because they are assumed to have this capability. For more detail on subtypes of VTOL, see List of tiltrotor aircraft. A * AeroVironment SkyTote (tailsitter) * AgustaWestland AW609 (tiltrotor) * Armstrong Whitworth AW.171 (ducted fan) * Avro Canada VZ-9 Avrocar (ducted fan) B * BAE Harrier II (vectored thrust) * BAE Sea Harrier (vectored thrust) * Bell 65 ATV ( Tiltjet) * Bell/Agusta BA609 (tiltrotor), presently known as AgustaWestland AW609 * Bell Boeing Quad TiltRotor (proposal) * Bell Boeing V-22 Osprey (tiltrotor) * Bell Eagle Eye (tiltrotor UAV) * Bell V-280 Valor (tiltrotor) * Bell X-14 (vectored thrust) * Bell X-22 (ducted fan) * Bell XV-3 (first tiltrotor) * Bell XV-15 (tiltrotor) * Bensen B-10 (ducted fan) * Boeing/McDonnell Douglas AV-8 Harrier (vectored thrust) * Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell Boeing V-22 Osprey
The Bell Boeing V-22 Osprey is an American multi-use, tiltrotor military transport and cargo aircraft with both vertical takeoff and landing (VTOL) and short takeoff and landing (STOL) capabilities. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft. The V-22 is operated by the United States and Japan, and is not only a new aircraft design, but a new type of aircraft that entered service in the 2000s, a tiltrotor compared to fixed wing and helicopter designs. The V-22 first flew in 1989 and after a long development was fielded in 2007. The design combines the vertical takeoff ability of a helicopter with the speed and range of a fixed-wing airplane. The failure of Operation Eagle Claw in 1980 during the Iran hostage crisis underscored that there were military roles for which neither conventional helicopters nor fixed-wing transport aircraft were well-suited. The United States Dep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dissolution Of The Soviet Union
The Soviet Union was formally dissolved as a sovereign state and subject of international law on 26 December 1991 by Declaration No. 142-N of the Soviet of the Republics of the Supreme Soviet of the Soviet Union. Declaration No. 142-Н of the Soviet of the Republics of the Supreme Soviet of the Soviet Union, formally establishing the dissolution of the Soviet Union as a state and subject of international law. It also brought an end to the Soviet Union's federal government and General Secretary (also President) Mikhail Gorbachev's effort to reform the Soviet political and economic system in an attempt to stop a period of political stalemate and economic backslide. The Soviet Union had experienced internal stagnation and ethnic separatism. Although highly centralized until its final years, the country was made up of 15 top-level republics that served as the homelands for different ethnicities. By late 1991, amid a catastrophic political crisis, with several republics al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerodynamics
Aerodynamics () is the study of the motion of atmosphere of Earth, air, particularly when affected by a solid object, such as an airplane wing. It involves topics covered in the field of fluid dynamics and its subfield of gas dynamics, and is an important domain of study in aeronautics. The term ''aerodynamics'' is often used synonymously with gas dynamics, the difference being that "gas dynamics" applies to the study of the motion of all gases, and is not limited to air. The formal study of aerodynamics began in the modern sense in the eighteenth century, although observations of fundamental concepts such as aerodynamic drag were recorded much earlier. Most of the early efforts in aerodynamics were directed toward achieving Aircraft#Heavier-than-air – aerodynes, heavier-than-air flight, which was first demonstrated by Otto Lilienthal in 1891. Since then, the use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experimentation, and computer si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Union
The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet Union, it dissolved in 1991. During its existence, it was the list of countries and dependencies by area, largest country by area, extending across Time in Russia, eleven time zones and sharing Geography of the Soviet Union#Borders and neighbors, borders with twelve countries, and the List of countries and dependencies by population, third-most populous country. An overall successor to the Russian Empire, it was nominally organized as a federal union of Republics of the Soviet Union, national republics, the largest and most populous of which was the Russian SFSR. In practice, Government of the Soviet Union, its government and Economy of the Soviet Union, economy were Soviet-type economic planning, highly centralized. As a one-party state go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
