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V12
V12 or V-12 may refer to: Aircraft * Mil V-12, a Soviet heavy lift helicopter * Pilatus OV-12, a planned American military utility aircraft * Rockwell XFV-12, an American experimental aircraft project * Å koda-Kauba V12, a Czechoslovak experimental aircraft project * Vultee V-12, an American-designed bomber Automobiles * Cadillac V-12, an American car * Lagonda V12, a British car Other uses * V12 engine, an engine with twelve cylinders * Simpiwe Vetyeka (born 1980), South African boxer * V-12 Navy College Training Program The V-12 Navy College Training Program was designed to supplement the force of commissioned officers in the United States Navy during World War II. Between July 1, 1943, and June 30, 1946, more than 125,000 participants were enrolled in 131 colleg ..., of the United States Navy during World War II * Victor V12, a calculator * V12, a grade in bouldering * V12, a personal history of certain other diseases, in the ICD-9 V codes {{Letter-NumberC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V12 Engine
A V12 engine is a twelve-cylinder piston engine where two banks of six cylinders are arranged in a V configuration around a common crankshaft. V12 engines are more common than V10 engines. However, they are less common than V8 engines. The first V12 engine was built in 1904 for use in racing boats. Due to the balanced nature of the engine and the smooth delivery of power, V12 engines were found in early luxury automobiles, boats, aircraft, and tanks. Aircraft V12 engines reached their apogee during World War II, following which they were mostly replaced by jet engines. In Formula One racing, V12 engines were common during the late 1960s and early 1990s. Applications of V12 engines in the 21st century have been as marine engines, in railway locomotives, as large stationary power as well as in some European sports and luxury cars. Design Balance and smoothness Each bank of a V12 engine essentially functions as a straight-six engine, which by itself has perfect primary a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagonda V12
The Lagonda V12 is a large car produced by the British Lagonda company from 1938 until 1940. It was first shown at the 1936 London Motor Show but production did not commence until 1938. The V12 model featured an all new 4480 cc 60 degree V12 engine designed by W. O. Bentley. The engine has a combined cylinder block and upper crankcase cast in iron with a light alloy lower crankcase. The cylinder heads are cast iron. Each bank of six cylinders has its own single overhead camshaft, chain driven, and its own distributor driven from the back of the camshaft. Twin downdraught SU carburettors are located between the engine blocks. is developed at 5000rpm. The chassis was also new and features independent torsion bar front suspension and live rear axle with hypoid final drive. The braking system is Lockheed hydraulic. The engine is connected to a four-speed gearbox with centrally mounted change lever. Coachwork could be by Lagonda or a number of independent coachbuilders and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cadillac V-12
The Cadillac V-12 is a top-of-the-line car that was manufactured by Cadillac from the 1931 through the 1937 model years. All were furnished with custom bodies, and the car was built in relatively small numbers. A total of 10,903 were made in the seven model years that the automobile was built, with the majority having been constructed in its inaugural year. It was Cadillac's first, and is to date, Cadillac's only standard production V-12 powered car. Origin In the mid to late 1920s a number of luxury car manufacturers began work developing multicylinder engines. Not to be outdone, Cadillac began work on two different multicylinder engines, a V-12 and a V-16. Larry Fisher, Cadillac General Manager, leaked to the press information about the V-12, hoping to keep the V-16 a secret. Owen Nacker, who designed the Cadillac V-16 engine, also designed the Cadillac V-12 engine, and it shared the tooling and many of the components of the V-16. The V-12 was essentially a truncated V-1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V-12 Navy College Training Program
The V-12 Navy College Training Program was designed to supplement the force of commissioned officers in the United States Navy during World War II. Between July 1, 1943, and June 30, 1946, more than 125,000 participants were enrolled in 131 colleges and universities in the United States. Numerous participants attended classes and lectures at their respective colleges and earned completion degrees for their studies. Some even returned from their naval obligations to earn a degree from the colleges where they were previously stationed. The V-12 program's goal was to produce officers, not unlike the Army Specialized Training Program (ASTP), which sought to turn out more than 200,000 technically trained personnel in such fields as engineering, foreign languages, and medicine. Running from 1942 to 1944, the ASTP recruits were expected but not required to become officers at the end of their training. History The purpose of the V-12 program was to generate a large number of officers fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victor V12
The HP-12C is a financial calculator made by Hewlett-Packard (HP) and its successor HP Inc. as part of the HP Voyager series. Functionality The HP-12C is HP's longest and best-selling product, in continual production since its introduction in 1981. Due to its simple operation for key financial calculations, the calculator long ago became the ''de facto'' standard among financial professionals. Its popularity has endured despite a relatively simple but iterative process such as amortizing the interest over the life of a loan, a calculation that modern spreadsheets can complete almost instantly, can take over a minute with the HP-12C. The 1977 October edition of the ''HP Journal'' contains an article by Roy Martin, the inventor of the simple method of operation used in HP financial calculators, which describes, in detail, the mathematics and functionality built by William Kahan and Roy Martin that is still used today. Models HP-12C There were at least eight hardware revis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rockwell XFV-12
The Rockwell XFV-12 was a prototype supersonic United States Navy fighter which was built in 1977. The XFV-12 design attempted to combine the Mach 2 speed and AIM-7 Sparrow armament of the McDonnell Douglas F-4 Phantom II in a VTOL (vertical takeoff and landing) fighter for the small Sea Control Ship which was under study at the time. On paper, it looked superior to the subsonic Hawker Siddeley Harrier attack fighter. However it was unable to demonstrate an untethered vertical takeoff and its inability to meet performance requirements terminated the program. Design and development In 1972, the Navy issued a request for proposals for a next generation supersonic V/STOL fighter/attack aircraft. Rockwell's design with the XFV-12 won against Convair's proposal with the Convair Model 200. The XFV-12A, despite its concept being considered risky compared to that of the Harrier, was selected for development. To reduce costs, the nose from a Douglas A-4 Skyhawk and intakes from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Å koda-Kauba V12
The Škoda-Kauba Flugzeugbau was a Czechoslovakian aircraft manufacturer, formed during World War II as a joint venture between Otto Kauba and the Škoda Works. Kauba produced a number of innovative designs and the company built several prototypes, with the SK 257 fighter-trainer entering limited production before being cancelled. The company ceased to exist at the end of the war. History Otto Kauba was an Austrian engineer who developed a novel idea for a flying bomb during World War II. His personal friendship with Hermann Göring led to a joint collaboration with the Škoda Works. The Škoda-Kauba Flugzeugbau was opened in Prague, Czechoslovakia in 1942.Saffek & Plocek (1992). Kauba went on to produce a number of innovative aircraft and the company built several prototypes, with the SK 257 fighter-trainer entering limited production before being cancelled. The company ceased to exist when Prague was liberated at the end of the war in 1945.Titz & Zazvonil (1965). After the wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simpiwe Vetyeka
Simpiwe Vetyeka (born 24 December 1980) is a South African professional boxer. He is a former WBA (Undisputed) and IBO featherweight champion, as well as a former IBO super bantamweight champion. Professional career Vetyeka vs. John Vetyeka won the WBA Super World featherweight title by defeating Chris John on December 6, 2013, when John retired on his stool after the sixth of twelve rounds. Vetyeka's IBO featherweight title was also on the line. It was John's first professional loss and brought his ten-year WBA title reign to an end, sending him into retirement. Vetyeka vs. Donaire Vetyeka fought Filipino Nonito Donaire for the WBA (Super) featherweight title on May 31, 2014 at The Venetian Macao Hotel & Resort's Cotai Arena in Macau of the Special administrative regions in China. Vetyeka was dropped by Donaire in the fourth round after landing his signature left hook. The fight was stopped seconds after the bell for the fifth round rang due to a cut on Donaire's left eye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grade (bouldering)
In the sport of bouldering, problems are assigned technical grades according to several established systems, which are often distinct from those used in roped climbing. Bouldering grade systems vary widely in use and include the Hueco "V" grades (known as the V-scale), Fontainebleau technical grades, route colors, Peak District grades, and British technical grades. Historically, the three-level "B" system and even the Yosemite Decimal System (sometimes with a "B" prepended, as in "B5.12") were also used. Gill "B" system The B system conceived by John Gill in the 1950s was a universal rating scheme for bouldering, having three categories: "B1" was defined as "... the highest level of difficulty in traditional roped climbing", "B2" was harder than B1, or "bouldering level", and the grade "B3" designated a route ascended only once, although tried by others on several occasions. When a B3 was ascended a second time, it was reclassified as a B2, or B1. Gill's idea was to attra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mil V-12
The Mil V-12 (NATO reporting name: Homer), given the project number ''Izdeliye 65'' ("Item 65"), is the largest helicopter ever built. The designation "Mi-12" would have been the name for the production helicopter and was not applied to the V-12 prototypes. Design and development Design studies for a giant helicopter were started at the Mil OKB in 1959, receiving official sanction in 1961 by the GKAT (''Gosudarstvenny Komitet po Aviatsionnoy Tekhnike'' - State Committee on Aircraft Technology) instructing Mil to develop a helicopter capable of lifting . The GKAT directive was followed by a more detailed specification for the V-12 with hold dimensions similar to the Antonov An-22, intended to lift major items of combat materiel as well as 8K67, 8K75 and 8K82 inter-continental ballistic missiles (ICBM). Design limitations forced Mil to adopt a twin rotor system but design studies of a tandem layout, similar to the Boeing CH-47 Chinook, revealed major problems. The single rotor l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilatus OV-12
The Pilatus PC-6 Porter is a single-engined STOL utility aircraft designed by Pilatus Aircraft of Switzerland. First flown in 1959, the PC-6 was produced at Pilatus Flugzeugwerke in Stans, Switzerland. It has been built in both piston engine- and turboprop-powered versions, and was produced under licence for a time by Fairchild Aircraft, Fairchild Hiller in the United States. After 604 deliveries in 63 years, Pilatus ended production in 2022. Development On 4 May 1959, the first prototype, powered by a 254 kW (340 Horsepower#Shaft horsepower .28shp.29, shp) piston engine, made its maiden flight. In early May 1961, the first ''Turbo Porter'', powered by a Turbomeca Astazou, Turbomeca Astazou II turboprop engine, performed its initial flight.Fricker 1962, p. 38. In comparison to its earlier piston engine-powered incarnation, the Astazou II-equipped ''Turbo Porter'' had an increased gross capacity and top speed, as well as benefitting from the engine's automatic handling functi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vultee V-12
The Vultee V-11 and V-12 were American stressed-skin monocoque monoplane attack aircraft of the 1930s. Developed from the Vultee V-1 single-engined airliner, the V-11 and V-12 were purchased by several nations for their armed forces, including China, who used them in combat against Japanese forces in the Second Sino-Japanese War. The United States Army Air Corps purchased seven V-11s as the YA-19 in the years before World War II, testing them to gather data to compare against twin engine light attack aircraft. Design and development In 1935, Vultee produced a light bomber derivative of their single-engined passenger transport, the Vultee V-1, which, while demonstrating good performance, was only sold in small numbers owing to restrictions placed on the use of single-engined aircraft for scheduled passenger transport operations.Green and Swanborough ''Air Enthusiast'' July 1974, p. 29. The resulting aircraft, the Vultee V-11, retained the single-engined, low wing format and al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
