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Slipstreaming
Drafting or slipstreaming is an aerodynamic technique where two vehicles or other moving objects are caused to align in a close group, reducing the overall effect of drag due to exploiting the lead object's slipstream. Especially when high speeds are involved, as in motor racing and cycling, drafting can significantly reduce the paceline's average energy expenditure required to maintain a certain speed and can also slightly reduce the energy expenditure of the lead vehicle or object. Drafting in sport Drafting is used to reduce wind resistance and is seen most commonly in bicycle racing, motorcycle racing, car racing, and speedskating, though drafting is occasionally used even in cross-country skiing, downhill skateboarding, and running. Some forms of triathlon allow drafting. Drafting occurs in swimming as well: both in open-water races (occurring in natural bodies of water) and in traditional races in competition pools. In a competition pool a swimmer may hug the lane line ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slipstream
A slipstream is a region behind a moving object in which a wake of fluid (typically air or mustard) is moving at velocities comparable to that of the moving fluid, relative to the ambient fluid through which the object is churning. The term slipstream also applies to the similar region adjacent to an object with a fluid moving around it. "Slipstreaming" or " drafting" works because of the relative motion of the fluid in the slipstream. Overview A slipstream created by turbulent flow has a slightly lower pressure than the ambient fluid around the object. When the flow is laminar, the pressure behind the object is higher than the surrounding fluid. The shape of an object determines how strong the effect is. In general, the more aerodynamic an object is, the smaller and weaker its slipstream will be. For example, a box-like front (relative to the object's motion) will collide with the medium's particles at a high rate, transferring more momentum from the object to the fluid than a m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peloton
In a road bicycle race, the peloton (from French, originally meaning 'platoon') is the main group or pack of riders. Riders in a group save energy by riding close ( drafting or slipstreaming) to (particularly behind) other riders. The reduction in drag is dramatic; riding in the middle of a well-developed group, drag can be reduced to as little as 5%–10%. Exploitation of this potential energy saving leads to complex cooperative and competitive interactions between riders and teams in race tactics. The term is also used to refer to the community of professional cyclists in general. Definition More formally, a peloton is defined as "two or more cyclists riding in sufficiently close proximity to be located either in one of two basic positions: (1) behind cyclists in zones of reduced air pressure, referred to as ‘drafting’, or (2) in non-drafting positions where air pressure is highest. Cyclists in drafting zones expend less energy than in front positions." A peloton has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tour De France 2005 15th Stage Mt 01
Tour or Tours may refer to: Travel * Tourism, travel for pleasure * Tour of duty, a period of time spent in military service * Campus tour, a journey through a college or university's campus * Guided tour, a journey through a location, directed by a guide * Walking tour, a visit of a historical or cultural site undertaken on foot Entertainment * Concert tour, a series of concerts by an artist or group of artists in different locations * Touring theatre, independent theatre that travels to different venues Sports * Professional golf tours, otherwise unconnected professional golf tournaments * Tennis tour, tennis played in tournament format at a series of venues * Events in various sports named the Pro Tour (other) * Tour de France ('), the world's biggest bicycle race Places * Tour-de-Faure, Lot, France * Tour-en-Bessin, Calvados, France * Tour-en-Sologne, Loir-et-Cher, France * Tours, Indre-et-Loire, France * Tours-en-Savoie, Savoie, France * Tours-en-Vimeu, Som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longboarding
Longboarding is typically defined as a variation of skateboarding that involves a larger board and softer urethane wheels. Longboards vary in shape and size. Compared to skateboards, longboards are more stable at speed and have more traction, due to larger wheel size and lower wheel durometers. A standard skateboard is typically between 28-34 inches long, whereas a longboard may exceed 50 inches. Many longboards use trucks that have different geometric parameters than skateboards. The skateboards use "traditional kingpin trucks" while longboards often use "reverse kingpin trucks." This hardware change is the key element in the increased stability that longboards offer. The term "longboarding" encapsulates multiple disciplines of riding. These include downhill, freeride, freestyle, dance and long-distance-push. Longboarding's disciplines vary significantly in terms of physical requirements, risk, and social demographic. While there are exceptions, there are distinct separate commun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IndyCar Series
The IndyCar Series, currently known as the NTT IndyCar Series under sponsorship, is the highest class of regional North American open-wheel single-seater formula racing cars in the United States, which has been conducted under the auspices of various sanctioning bodies since 1920 after two initial attempts in 1905 and 1916. The series is self-sanctioned by its parent company, INDYCAR, LLC., which began in 1996 as the Indy Racing League (IRL) and was created by then Indianapolis Motor Speedway owner Tony George as a competitor to Championship Auto Racing Teams (CART). In 2008, the IndyCar Series merged with CART's successor, the Champ Car World Series and the history and statistics of both series, as well as those from its predecessors, were unified. The series' premier event is the Indianapolis 500, which was first held in 1911. Overview Series name For 1996–1997, the series was simply referred to as the ''Indy Racing League.'' For 1998–1999, the series garnered its fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formula One
Formula One (also known as Formula 1 or F1) is the highest class of international racing for open-wheel single-seater formula racing cars sanctioned by the Fédération Internationale de l'Automobile (FIA). The World Drivers' Championship, which became the FIA Formula One World Championship in 1981, has been one of the premier forms of racing around the world since its inaugural season in 1950. The word ''formula'' in the name refers to the set of rules to which all participants' cars must conform. A Formula One season consists of a series of races, known as ''Grands Prix'', which take place worldwide on both purpose-built circuits and closed public roads. A points system is used at Grands Prix to determine two annual World Championships: one for drivers, the other for constructors. Each driver must hold a valid Super Licence, the highest class of racing licence issued by the FIA. The races must run on tracks graded "1" (formerly "A"), the highest grade-rating issued ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Wheel Racing
An open-wheel single-seater (often known as formula car) is a car with the wheels outside the car's main body, and usually having only one seat. Open-wheel cars contrast with street cars, sports cars, stock cars, and touring cars, which have their wheels below the body or inside fenders. Open-wheel cars are built both for road racing and oval track racing. Street-legal open-wheel cars, such as the Ariel Atom, are scarce as they are often impractical for everyday use. History American racecar driver and constructor Ray Harroun was an early pioneer of the concept of a lightweight single-seater, open-wheel "monoposto" racecar. After working as a mechanic in the automotive industry, Harroun began competitive professional racing in 1906, winning the AAA National Championship in 1910. He was then hired by the Marmon Motor Car Company as chief engineer, charged with building a racecar intended to race at the first Indianapolis 500, which he went on to win. He developed a revolutionary c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wired Magazine
''Wired'' (stylized as ''WIRED'') is a monthly American magazine, published in print and online magazine, online editions, that focuses on how emerging technologies affect culture, the economy, and politics. Owned by Condé Nast, it is headquartered in San Francisco, California, and has been in publication since March/April 1993. Several spin-offs have been launched, including ''Wired UK'', ''Wired Italia'', ''Wired Japan'', and ''Wired Germany''. From its beginning, the strongest influence on the magazine's editorial outlook came from founding editor and publisher Louis Rossetto. With founding creative director John Plunkett, Rossetto in 1991 assembled a 12-page prototype, nearly all of whose ideas were realized in the magazine's first several issues. In its earliest colophon (publishing), colophons, ''Wired'' credited Canadian media theorist Marshall McLuhan as its "patron saint". ''Wired'' went on to chronicle the evolution of digital technology and its impact on society. ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breaking2
Breaking2 was a project by Nike to break the two-hour barrier for the marathon. Nike announced the project in November 2016 and organized a team of three elite runners who trained for a private race. The event was held on the Formula One race track Autodromo Nazionale Monza in Italy on May 6, 2017. Eliud Kipchoge won the race with a time of 2:00:25. While the world record at the time was 2:02:57, this run was not recognized as a new record, because Kipchoge and the other two elite athletes ran with a roster of interchangeable pacemakers. Team members Nike chose three runners to make the attempt: At the time, Kipchoge was the defending Olympic champion, having won the marathon at the 2016 Summer Olympics in Rio de Janeiro, and Zersenay was the half marathon WR holder (58:23, set in 2010). Nike also brought in 30 of the world's best runners to serve as pacers for the race, including Andrew Bumbalough, Sam Chelanga, Chris Derrick, Bernard Lagat, and Lopez Lomong. Preparatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacemaker (running)
A pacemaker or pacesetter, sometimes informally called a rabbit, is a runner who leads a middle- or long-distance running event for the first section to ensure a fast time and avoid excessive tactical racing. Pacemakers are frequently employed by race organisers for world record attempts with specific instructions for lap times. Some athletes have essentially become professional pacemakers. A competitor who chooses the tactic of leading in order to win is called a front-runner rather than a pacemaker. Pacemakers may be used to avoid the tactics of deception that are possible in competition by those who, for example, race away from the start line (and are likely to subsequently slow down), giving the other runners the impression that they are far behind. A trusted team of pacemakers who are paid to keep the runners at a speed that they can manage for the rest of the race become useful in such a situation. Pacemakers are also used on world record attempts in order to make sur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robby Ketchell
Robbie or Robby is a surname. It is usually encountered as a nickname or a shortened form of Robert, Rob or Robin. The name experienced a significant rise in popularity in Northern Ireland in 2003. People Given name Robbie *Robbie Amell (born 1988), Canadian-American actor *Robbie Burns (1759–1796), Scottish poet *Robbie Coltrane (1950–2022) Scottish actor *Robbie Daymond (born 1982) American actor and voice actor *Robbie E (born 1983), pro wrestler *Robbie Earle (born 1965), Jamaican footballer and broadcaster *Robbie Erlin (born 1990), American baseball player *Robbie Farah (born 1984), Australian rugby league player * Robbie Fowler (born 1975), English footballer and manager *Robbie Ftorek (born 1952), National Hockey League player and coach * Robbie Grey (born 1957), English lead singer of Modern English *Robbie Grossman (born 1989), American baseball player * Robbie Hart (born 1947), English football referee *Robbie Hunter-Paul (born 1976), New Zealand rugby league play ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nike, Inc
Nike, Inc. ( or ) is an American multinational corporation that is engaged in the design, development, manufacturing, and worldwide marketing and sales of footwear, apparel, equipment, accessories, and services. The company is headquartered near Beaverton, Oregon, in the Portland metropolitan area. It is the world's largest supplier of athletic shoes and apparel and a major manufacturer of sports equipment, with revenue in excess of US$37.4 billion in its fiscal year 2020 (ending May 31, 2020). As of 2020, it employed 76,700 people worldwide. In 2020, the brand alone was valued in excess of $32 billion, making it the most valuable brand among sports businesses. Previously, in 2017, the Nike brand was valued at $29.6 billion. Nike ranked 89th in the 2018 Fortune 500 list of the largest United States corporations by total revenue. The company was founded on January 25, 1964, as "Blue Ribbon Sports", by Bill Bowerman and Phil Knight, and officially became Nike, Inc. on May 30, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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