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Spin (flight)
In flight dynamics a spin is a special category of stall resulting in autorotation (uncommanded roll) about the aircraft's longitudinal axis and a shallow, rotating, downward path approximately centred on a vertical axis. Spins can be entered intentionally or unintentionally, from any flight attitude if the aircraft has sufficient yaw while at the stall point. In a normal spin, the wing on the inside of the turn stalls while the outside wing remains flying. It is possible for both wings to stall, but the angle of attack of each wing, and consequently its lift and drag, are different. Either situation causes the aircraft to autorotate toward the stalled wing due to its higher drag and loss of lift. Spins are characterized by high angle of attack, an airspeed below the stall on at least one wing and a shallow descent. Recovery and avoiding a crash may require a specific and counter-intuitive set of actions. A spin differs from a spiral dive, in which neither wing is stalled a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angle Of Attack
In fluid dynamics, angle of attack (AOA, α, or \alpha) is the angle between a reference line on a body (often the chord line of an airfoil) and the vector representing the relative motion between the body and the fluid through which it is moving. Angle of attack is the angle between the body's reference line and the oncoming flow. This article focuses on the most common application, the angle of attack of a wing or airfoil moving through air. In aerodynamics, angle of attack specifies the angle between the chord line of the wing of a fixed-wing aircraft and the vector representing the relative motion between the aircraft and the atmosphere. Since a wing can have twist, a chord line of the whole wing may not be definable, so an alternate reference line is simply defined. Often, the chord line of the root of the wing is chosen as the reference line. Another choice is to use a horizontal line on the fuselage as the reference line (and also as the longitudinal axis). Some aut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service. From the middle decades of the 17th century, and through the 18th century, the Royal Navy vied with the Dutch Navy and later with the French Navy for maritime supremacy. From the mid 18th century, it was the world's most powerful navy until the Second World War. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superiority globally. Owing to this historical prominence, it is common, even among non-Britons, to ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilfred Parke
Lieutenant Wilfred Parke RN (1889–1912) was a British aviator who was the first pilot to make an observed recovery from a spin. Family Parke was the son of Alfred Watlington Parke, the Rector of Uplyme, and Hilda Fort, and the grandson of Charles Joseph Parke. Career Parke became a midshipman in the Royal Navy in September 1905, was promoted to sub-lieutenant in 1908 and lieutenant in 1910.Aeroplane Accident at Wembley ''The Times'' Monday 16 Dec 1912; p. 4; Issue 40083. He had his first flying lesson at the Avro school at Brooklands on Sunday 11 April 1911. At that time dual-control instruction was almost unknown, and Parke was in sole charge of the aircraft, in which he had been told to try taxying. To the surprise of all, he opened the throttle, and made series of short hops, managing to land successfully. The following Wednesday Parke, at his third attempt, succeeded in flying a half-circle in a stiff breeze, landing with minor damage to the undercarriage. The followin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harry Bruno
Harry Augustine Bruno (7 February 1893 – 1978) was a promoter of aviation and boating, and a pioneer public relations professional. Biography Harry Bruno was born 7 February 1893 in London, England. His father Henry Augustine Bruno was a marine insurance analyst; his mother was Annie (Thompson) Bruno. In 1907 Henry brought his family to New York City. Young Harry came under the influence of Elbert Hubbard, who said simply, "To have a friend you must be a friend". Hubbard and Harry's parents were sailing on the RMS ''Lusitania'' when it sank on 7 May 1915. Both Hubbard and the Brunos died. Harry was very close to his brother Frank Bruno (1901–33) who worked in the newspaper business. In 1972 he married Evelyn Denny Witten, who was with him when he died 21 March 1978 in Southampton (town), New York on Long Island. In 1910 Harry built a glider with his friend Bernie Mahon. Harry made a flight of 265 yards with it on 24 December. Harry and Bernie worked as runners on Wal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincoln Beachey
Lincoln Beachey (March 3, 1887 – March 14, 1915) was a Aviation in the pioneer era, pioneer American aviator and barnstorming, barnstormer. He became famous and wealthy from flying exhibitions, staging aerial stunts, helping invent aerobatics, and setting aviation records. He was known as ''The Man Who Owns the Sky,'' and sometimes the ''Master Birdman''.Marrero, Frank. ''Lincoln Beachey: The Man Who Owned the Sky'' Scottwall Associates (1997) Beachey was acknowledged even by his competitors as "The World's Greatest Aviator". He was "known by sight to hundreds of thousands and by name to the whole world". Birth Beachey was born on March 3, 1887, in San Francisco. Following in his older brother Hillary's footsteps, he worked as a ground crewman for dirigible pilot Thomas Scott Baldwin. He helped build the dirigible ''California Arrow'' and made his first dirigible flight in 1905, at the age of 17. Later he helped design a faster, more aerodynamic dirigible known as the "Beac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Aviation Regulations
The Federal Aviation Regulations (FARs) are rules prescribed by the Federal Aviation Administration (FAA) governing all aviation activities in the United States. The FARs comprise Title 14 of the Code of Federal Regulations (CFR). A wide variety of activities are regulated, such as aircraft design and maintenance, typical airline flights, pilot training activities, hot-air ballooning, lighter-than-air aircraft, man-made structure heights, obstruction lighting and marking, model rocket launches, commercial space operations, model aircraft operations, Unmanned Aircraft Systems (UAS) and kite flying. The rules are designed to promote safe aviation, protecting pilots, flight attendants, passengers and the general public from unnecessary risk. FAR vs. 14 CFR Since 1958, these rules have typically been referred to as "FARs", short for Federal Aviation Regulations. However, another set of regulations (Title 48) is titled "Federal Acquisitions Regulations", and this has led to confu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utility Aircraft
A utility aircraft is a general-purpose light aircraft, light airplane or helicopter, usually used for transporting people, freight or other supplies, but is also used for other duties when more specialized aircraft are not required or available. The term can also refer to an aircraft type certificated under American, Canadian, European or Australian regulations as a ''Utility Category Aircraft'', which indicates that it is permitted to conduct limited aerobatics. The approved maneuvers include chandelles, Aerobatic maneuver, lazy eights, Spin (aerodynamics), spins and Steep turn (aviation), steep turns over 60° of bank.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 535. Aviation Supplies & Academics, 1997. In the United States, military utility aircraft are given the prefix U in their United States Department of Defense aerospace vehicle designation, designations. See also * Federal Aviation Regulations#Part 23, FAR Part 23 (refers to "utility category ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chord (aeronautics)
In aeronautics, the chord is an imaginary straight line joining the leading edge and trailing edge of an aerofoil. The chord length is the distance between the trailing edge and the point where the chord intersects the leading edge.L. J. Clancy (1975), ''Aerodynamics'', Section 5.2, Pitman Publishing Limited, London. The point on the leading edge used to define the chord may be the surface point of minimum radius. p.18 For a turbine aerofoil the chord may be defined by the line between points where the front and rear of a 2-dimensional blade section would touch a flat surface when laid convex-side up. The wing, horizontal stabilizer, vertical stabilizer and propeller/rotor blades of an aircraft are all based on aerofoil sections, and the term ''chord'' or ''chord length'' is also used to describe their width. The chord of a wing, stabilizer and propeller is determined by measuring the distance between leading and trailing edges in the direction of the airflow. (If a wing has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown management f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corkscrew
A corkscrew is a tool for drawing corks from wine bottles and other household bottles that may be sealed with corks. In its traditional form, a corkscrew simply consists of a pointed metallic helix (often called the "worm") attached to a handle, which the user screws into the cork and pulls to extract it. Corkscrews are necessary because corks themselves, being small and smooth, are difficult to grip and remove, particularly when inserted fully into an inflexible glass bottle. More recent styles of corkscrew incorporate various systems of levers that further increase the amount of force that can be applied outwards upon the cork, making easier the extraction of difficult corks. History Its design may have derived from the gun worm which was a device used by men to remove unspent charges from a musket's barrel in a similar fashion, from at least the early 1630s.winepros.com.au. The corkscrew is possibly an English invention, due to the tradition of beer and cider, and ''Treat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boundary Layer
In physics and fluid mechanics, a boundary layer is the thin layer of fluid in the immediate vicinity of a bounding surface formed by the fluid flowing along the surface. The fluid's interaction with the wall induces a no-slip boundary condition (zero velocity at the wall). The flow velocity then monotonically increases above the surface until it returns to the bulk flow velocity. The thin layer consisting of fluid whose velocity has not yet returned to the bulk flow velocity is called the velocity boundary layer. The air next to a human is heated resulting in gravity-induced convective airflow, airflow which results in both a velocity and thermal boundary layer. A breeze disrupts the boundary layer, and hair and clothing protect it, making the human feel cooler or warmer. On an aircraft wing, the velocity boundary layer is the part of the flow close to the wing, where viscous forces distort the surrounding non-viscous flow. In the Earth's atmosphere, the atmospheric boun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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