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Kammback
A Kammback—also known as a Kamm tail or K-tail—is an automotive styling feature wherein the rear of the car slopes downwards before being abruptly cut off with a vertical or near-vertical surface. A Kammback reduces aerodynamic drag, thus improving efficiency and reducing fuel consumption, while maintaining a practical shape for a vehicle. The Kammback is named after German aerodynamicist Wunibald Kamm for his work developing the design in the 1930s. Some vehicles incorporate the kammback design based on aerodynamic principles, while some use a cut-off tail as a design or marketing feature. Origins As the speed of cars increased during the 1920s and 1930s, designers observed and began to apply the principles of automotive aerodynamics. As aerodynamic drag increases, more energy, and thus more fuel, is required to propel the vehicle. In 1922, Paul Jaray patented a car based on a teardrop profile (i.e. with a rounded nose and long, tapered tail) to minimize the aer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wunibald Kamm
Wunibald Kamm (26 April 1893 – 11 October 1966) was an automobile designer, engineer, and aerodynamicist. He is best known for his breakthrough in reducing car turbulence at high speeds; the style of car bodywork based on his research has come to be known as a Kammback or a Kamm-tail. Design One goal of automotive aerodynamics is to reduce the air turbulence, or drag, caused by the shape of the automobile. Aerodynamic drag may be reduced either by reduction of frontal area or by reduction of the drag coefficient. In bodies such as automobiles and airships, drag decreases after the rear of a car's cross-sectional area is reduced to fifty percent of the car's maximum cross section; "the best position is nearer 45 percent of the length, and ... to have this maximum cross-section nearer the rear end than the front, and its drag has proved even less". There are other aspects of the car's design such as keeping the flow of air attached to the body far to the back of the car as p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AMC Eagle
The AMC Eagle is a compact four-wheel drive passenger vehicle manufactured and marketed in a single generation by American Motors Corporation (AMC) for model years 1980 through 1987 and continued by Chrysler, Chrysler Corporation following its acquisition of AMC in 1987, for the 1988 model year. Introduced in August 1979 for the 1980 model year, the coupe, sedan, and station wagon body styles were based on the AMC Concord. In 1981, the two-door subcompact-sized AMC Spirit-based models, the SX/4 and Kammback, joined the Eagle line aimed at both first-time buyers and fleet sales. A Sundancer convertible (car), convertible conversion for the larger Eagle two-door model was available during 1981 and 1982. By 1984, only sedan and station wagon versions were available. For 1988, its final model year, only a station wagon was offered, marketed as the "Eagle Wagon". However, the name continued to be used by Chrysler Corporation as the Eagle (automobile), Eagle brand of cars through 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevrolet Vega
The Chevrolet Vega is a Subcompact car, subcompact automobile manufactured and marketed by General Motors, GM's Chevrolet division from 1970 until 1977. Available in two-door hatchback, notchback, station wagon, wagon, and sedan delivery body styles, all models were powered by an Straight-four engine, inline four-cylinder engine designed specifically for the Vega, with a lightweight aluminum alloy cylinder block. The Vega first went on sale in Chevrolet dealerships on September 10, 1970. Variants included the Chevrolet Cosworth Vega, Cosworth Vega, a short-lived limited-production performance version introduced spring 1975. The Vega received the 1971 Motor Trend Car of the Year, ''Motor Trend'' Car of the Year. Subsequently, the car became widely known for a range of problems related to its engineering, reliability, safety, propensity to rust, and engine durability. Despite numerous Product recall, recalls and design upgrades, Vega's problems tarnished its reputation and that of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automotive Aerodynamics
Automotive aerodynamics is the study of the aerodynamics of road vehicles. Its main goals are reducing drag (physics), drag and wind noise, minimizing roadway noise, noise emission, and preventing undesired lift (force), lift forces and other causes of Oversteer#Aerodynamic stability, aerodynamic instability at high speeds. Air is also considered a fluid in this case. For some classes of racing vehicles, it may also be important to produce downforce to improve traction and thus cornering abilities. History The frictional force of aerodynamic drag increases significantly with vehicle speed. As early as the 1920s engineers began to consider automobile shape in reducing aerodynamic drag at higher speeds. By the 1950s German and British automotive engineers were systematically analyzing the effects of automotive drag for the higher performance vehicles. By the late 1960s scientists also became aware of the significant increase in sound levels emitted by automobiles at high speed. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ford GT40 (rear)
The Ford GT40 is a high-performance mid-engined Auto racing, racing car originally designed and built for and by the Ford Motor Company to compete in 1960s European endurance racing (motorsport), endurance racing. Its specific impetus was to beat Scuderia Ferrari, which had won the prestigious 24 Hours of Le Mans race for six years running List of 24 Hours of Le Mans winners, from 1960 to 1965. Around 100 cars have been made, mostly as V8-powered Mk Is, some sold to private teams or as road-legal Mk III cars. The car debuted in 1964, with Ford winning World Championships categories from 1966 to 1968. The first Le Mans win came in 1966 24 Hours of Le Mans, 1966 with three powered Mk.II prototypes crossing the finish line together, the second in 1967 24 Hours of Le Mans, 1967 by a similarly powered highly modified US-built Mk.IV "J-car" prototype. In order to lower ever-higher race top speeds, a rule change from 1968 onwards limited prototypes to 3.0 litre Formula 1 engines; a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
'69 Fiat 850 Coupe, Example Of Kammback
69 may refer to: * 69 (number) * A year, primarily 69 BC, AD 69, 1969, or 2069 *69 (sex position) *69 Hesperia, a main-belt asteroid Arts and media Music * 69 (album), ''69'', a 1988 album by A.R. Kane * '69 (Deep Purple song), 69", a song by Deep Purple from ''Abandon'' * Major 6 add 9, a jazz chord#Major chords, jazz chord * "Summer of '69", a song by Bryan Adams * 6ix9ine, also known as Tekashi69, American rapper * ''Day69'', album by 6ix9ine * "69", a song by T-Pain from his 2007 album ''Epiphany (T-Pain album), Epiphany'' * ''Six/Nine'', a 1995 album by Buck-Tick Other media * 69 (novel), ''69'', a novel by Ryu Murakami * 69 (film), ''69'', a 2004 film based on the Murakami novel Other uses * Lake 69, a small lake in the region of Áncash, Peru * *69, the Last Call Return feature code in the US and Canada * List of highways numbered 69 ** Texas State Highway 112, formerly designated as State Highway 69 * ♋️, the symbol for the astrological sign Cancer (astrology), Cance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wake (physics)
In fluid dynamics, a wake may either be: * the region of recirculating flow immediately behind a moving or stationary blunt body, caused by viscosity, which may be accompanied by flow separation and turbulence, or * the wave pattern on the water surface downstream of an object in a flow, or produced by a moving object (e.g. a ship), caused by density differences of the fluids above and below the free surface and gravity (or surface tension). Viscosity The wake is the region of disturbed flow (often turbulent) downstream of a solid body moving through a fluid, caused by the flow of the fluid around the body. For a blunt body in subsonic external flow, for example the Apollo or Orion capsules during descent and landing, the wake is massively separated and behind the body is a reverse flow region where the flow is moving toward the body. This phenomenon is often observed in wind tunnel testing of aircraft, and is especially important when parachute systems are involved, becaus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Electric Vehicle
A hybrid electric vehicle (HEV) is a type of hybrid vehicle that couples a conventional internal combustion engine (ICE) with one or more electric engines into a hybrid vehicle drivetrain, combined propulsion system. The presence of the electric powertrain, which has inherently better energy conversion efficiency, is intended to achieve either better fuel economy in automobiles, fuel economy or better acceleration performance than a conventional vehicle. There is a variety of HEV types and the degree to which each functions as an electric vehicle (EV) also varies. The most common form of HEV is hybrid electric passenger cars, although hybrid electric trucks (pickup truck, pickups, tow trucks and tractors), buses, motorboats, and aircraft also exist. Modern HEVs use energy recovery technologies such as motor–generator units. and regenerative braking to recycle the vehicle's kinetic energy to electric energy via an alternator (automotive), alternator, which is energy storage, st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2011 Audi A7 (4G) 3
Eleven or 11 may refer to: *11 (number) * One of the years 11 BC, AD 11, 1911, 2011 Literature * ''Eleven'' (novel), a 2006 novel by British author David Llewellyn *''Eleven'', a 1970 collection of short stories by Patricia Highsmith *''Eleven'', a 2004 children's novel in The Winnie Years by Lauren Myracle *''Eleven'', a 2008 children's novel by Patricia Reilly Giff *''Eleven'', a short story by Sandra Cisneros Music *Eleven (band), an American rock band * Eleven: A Music Company, an Australian record label *Up to eleven, an idiom from popular culture, coined in the movie ''This Is Spinal Tap'' Albums * ''11'' (The Smithereens album), 1989 * ''11'' (Ua album), 1996 * ''11'' (Bryan Adams album), 2008 * ''11'' (Sault album), 2022 * ''Eleven'' (Harry Connick, Jr. album), 1992 * ''Eleven'' (22-Pistepirkko album), 1998 * ''Eleven'' (Sugarcult album), 1999 * ''Eleven'' (B'z album), 2000 * ''Eleven'' (Reamonn album), 2010 * ''Eleven'' (Martina McBride album), 2011 * ''Eleven'' (Mr Fog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2009 Toyota Prius (ZVW30R) Liftback (2011-12-06) 02
9 (nine) is the natural number following and preceding . Evolution of the Hindu–Arabic digit Circa 300 BC, as part of the Brahmi numerals, various Indians wrote a digit 9 similar in shape to the modern closing question mark without the bottom dot. The Kshatrapa, Andhra and Gupta started curving the bottom vertical line coming up with a -look-alike. How the numbers got to their Gupta form is open to considerable debate. The Nagari continued the bottom stroke to make a circle and enclose the 3-look-alike, in much the same way that the sign @ encircles a lowercase ''a''. As time went on, the enclosing circle became bigger and its line continued beyond the circle downwards, as the 3-look-alike became smaller. Soon, all that was left of the 3-look-alike was a squiggle. The Arabs simply connected that squiggle to the downward stroke at the middle and subsequent European change was purely cosmetic. While the shape of the glyph for the digit 9 has an ascender in most modern typefa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
