|
Split-S
The split S is an Aerobatic maneuver and an air combat maneuver mostly used to disengage from combat. To execute a split S, the pilot half-rolls their aircraft inverted and executes a descending half-loop, resulting in level flight in the opposite direction at a lower altitude. Description The split S is taught to be used in dogfighting when the pilot has the opportunity to withdraw from battle. It can be an effective tactic to prevent an enemy behind (between four o'clock and eight o'clock positions) from gaining a missile lock-on while one is disengaging from a fight. The split S is contrasted with the Immelmann turn, which is an ascending half-loop that finishes with a half-roll out, resulting in level flight in the opposite direction at a higher altitude. The split S is also called a reversed Immelmann turn and can also be written with a hyphen: split-S. In basic terms, the Immelmann and split S are very similar, both accomplishing the same reversal in course, but the sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Split S
The split S is an Aerobatic maneuver and an air combat maneuver mostly used to disengage from combat. To execute a split S, the pilot half-rolls their aircraft inverted and executes a descending half-loop, resulting in level flight in the opposite direction at a lower altitude. Description The split S is taught to be used in dogfighting when the pilot has the opportunity to withdraw from battle. It can be an effective tactic to prevent an enemy behind (between four o'clock and eight o'clock positions) from gaining a missile lock-on while one is disengaging from a fight. The split S is contrasted with the Immelmann turn, which is an ascending half-loop that finishes with a half-roll out, resulting in level flight in the opposite direction at a higher altitude. The split S is also called a reversed Immelmann turn and can also be written with a hyphen: split-S. In basic terms, the Immelmann and split S are very similar, both accomplishing the same reversal in course, but the sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miss Shilling's Orifice
Miss Shilling's orifice was a very simple technical device made to counter engine cut-out in early Spitfire and Hurricane fighter aeroplanes during the Battle of Britain. While it was officially called the R.A.E. restrictor, it was referred to under various names, such as Miss Tilly's diaphragm or the Tilly orifice in reference to its inventor, Beatrice "Tilly" Shilling. Engine cut-out problems Early versions of the Rolls-Royce Merlin engine came equipped with an SU carburettor. When an aeroplane equipped with such an engine performed a negative G force manoeuvre (pitching the nose hard down), fuel was forced up to the top of the carburettor's float chamber rather than down into the engine, leading to loss of power. If the negative G continued, fuel collecting in the float chamber would force the float to the floor of the chamber. Since this float controlled the needle valve that regulated fuel intake, the carburettor would flood and drown the supercharger with an over-rich m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scissors (aeronautics)
The scissors is an aerial dogfighting maneuver commonly used by military fighter pilots. It is primarily a defensive maneuver, used by an aircraft that is under attack. It consists of a series of short turns towards the attacking aircraft, slowing with each turn, in the hopes of forcing the attacker to overshoot. Performed properly, it can cause the attacking aircraft to move far enough in front to allow the defender to turn the tables and attack. The scissors is a close-maneuvering technique, and as such, is really only useful when defending against guns or low-performance missiles. It was a major technique from World War I to the Korean War, but is much less common today. The introduction of high-angle missiles makes it much less effective, as the attacker can shoot even when the defender is not in front of them. Modern aircraft also make it difficult to use this technique as they maintain energy much better than earlier designs and the maneuvering limits are often the pilot' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chandelle
The ''chandelle'' is an aircraft control maneuver where the pilot combines a 180° turn with a climb.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 102. Aviation Supplies & Academics, 1997. Aircraft Owners and Pilots Association. Retrieved 2016-02-11. It is now required for attaining a commercial certificate in many countries. The in the United States requires such training. The ''chandelle'' (which is the French word for candle) is a precision aircraft contr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuel Injection
Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All compression-ignition engines (e.g. diesel engines), and many spark-ignition engines (i.e. petrol engines, such as Otto or Wankel), use fuel injection of one kind or another. Mass-produced diesel engines for passenger cars (such as the Mercedes-Benz OM 138) became available in the late 1930s and early 1940s, being the first fuel-injected engines for passenger car use. In passenger car petrol engines, fuel injection was introduced in the early 1950s and gradually gained prevalence until it had largely replaced carburettors by the early 1990s. The primary difference between carburetion and fuel injection is that fuel injection atomizes the fuel through a small nozzle under high pressure, while a carburettor relies on suction created by intake ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure Carburetor
A pressure carburetor is a type of fuel metering system manufactured by the Bendix Corporation for piston aircraft engines, starting in the 1940s. It is recognized as an early type of throttle-body fuel injection and was developed to prevent fuel starvation during inverted flight. Concept Most aircraft of the 1920s and 1930s had a float-type carburetor. They are adequate for civil aircraft which normally fly upright, but present a problem for aircraft which fly upside-down or are subject to a negative g-force, especially military fighters and aerobatic aircraft. A float carburetor uses the venturi effect to supply fuel into the engine intake; this depends upon a constant level of fuel in the float bowl to maintain the desired fuel/air mixture. The float operates a valve which keeps the fuel level in the carburetor consistent despite varying demands by means of a linked float valve. As the fuel level increases, the valve closes slowing or stopping the flow into the bowl. However, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bendix Corporation
Bendix Corporation is an American manufacturing and engineering company which, during various times in its existence, made automotive brake shoes and systems, vacuum tubes, aircraft brakes, aeronautical hydraulics and electric power systems, avionics, aircraft and automobile fuel control systems, radios, televisions and computers. It was also well known for the name ''Bendix'', as used on home clothes washing machines, but never actually made these appliances. History Early history Founder and inventor Vincent Bendix initially began his corporation in a hotel room in Chicago in 1914 with an agreement with the struggling bicycle brake manufacturing firm, Eclipse Machine Company of Elmira, New York. Bendix granted permission to his invention which was described as "a New York device for the starting of explosive motors." This company made a low cost triple thread screw which could be used in the manufacture of other drive parts. By using this screw with the Eclipse Machine Com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SU Carburettor
SU carburettors were a British manufacturer of constant-depression carburettors. Their designs were in mass production during most of the twentieth century. The S.U. Carburetter Company Limited also manufactured dual-choke updraught carburettors for aero-engines such as the Rolls-Royce Merlin and Rolls-Royce Griffon. Invention and development Herbert Skinner (1872–1931), pioneer motorist and an active participant in the development of the petrol engine,Obituary. Mr. G. H. Skinner. ''The Times'', Wednesday, Jan 06, 1932; pg. 12; Issue 46023 invented his Union carburettor in 1904.E A Forward, ''Handbook of the Collections illustrating Land Transport, II. Mechanical Road Vehicles'', Science Museum South Kensington, 1936 His much younger brother, Carl (Thomas Carlisle) Skinner (1882–1958), also a motoring enthusiast, had joined the Farman Automobile Co in London in 1899.Obituary. Mr. Thomas C. Skinner ''The Times'', Saturday, Nov 15, 1958, Issue 54309, p.10. He helped Herbert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuel Injection
Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All compression-ignition engines (e.g. diesel engines), and many spark-ignition engines (i.e. petrol engines, such as Otto or Wankel), use fuel injection of one kind or another. Mass-produced diesel engines for passenger cars (such as the Mercedes-Benz OM 138) became available in the late 1930s and early 1940s, being the first fuel-injected engines for passenger car use. In passenger car petrol engines, fuel injection was introduced in the early 1950s and gradually gained prevalence until it had largely replaced carburettors by the early 1990s. The primary difference between carburetion and fuel injection is that fuel injection atomizes the fuel through a small nozzle under high pressure, while a carburettor relies on suction created by intake ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Splits
A split (commonly referred to as splits or the splits) is a physical position in which the legs are in line with each other and extended in opposite directions. Splits are commonly performed in various athletic activities, including dance, figure skating, gymnastics, contortionism, synchronized swimming, cheerleading, martial arts, aerial arts and yoga as exercise, where a front split is named Hanumanasana and a side split is named Samakonasana. A person who has assumed a split position is said to be "in a split", "doing a split" (for example, a term in the Eastern United States), or "doing the splits" (in the Central and Western United States). When executing a split, the lines defined by the inner thighs of the legs form an angle of approximately 180 degrees. This large angle significantly stretches, and thus demonstrates excellent flexibility of, the hamstring and iliopsoas muscles. Consequently, splits are often used as a stretching exercise to warm up and enhance the flexib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
G-force
The gravitational force equivalent, or, more commonly, g-force, is a measurement of the type of force per unit mass – typically acceleration – that causes a perception of weight, with a g-force of 1 g (not gram in mass measurement) equal to the conventional value of gravitational acceleration on Earth, ''g'', of about . Since g-forces indirectly produce weight, any g-force can be described as a "weight per unit mass" (see the synonym specific weight). When the g-force is produced by the surface of one object being pushed by the surface of another object, the reaction force to this push produces an equal and opposite weight for every unit of each object's mass. The types of forces involved are transmitted through objects by interior mechanical stresses. Gravitational acceleration (except certain electromagnetic force influences) is the cause of an object's acceleration in relation to free fall. The g-force experienced by an object is due to the vector sum of all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
