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Cant (road And Rail)
The cant of a Rail transport, railway track or camber angle, camber of a road (also referred to as superelevation, cross slope or cross fall) is the rate of change in elevation (height) between the two rails or edges of the road. This is normally greater where the railway or road is curved; raising the outer rail or the outer edge of the road creates a banked turn, thus allowing vehicles to travel round the curve at greater speeds than would be possible if the surface were level. Rail Superelevation in railway tracks ;Importance of superelevation In curved railway tracks, the outer rail is elevated, providing a banked turn. This allows trains to navigate curves at higher speeds and reduces the pressure of the wheel flanges against the rails, minimizing friction and wear. The difference in elevation between the outer and inner rails is referred to as cant in most countries. ;How superelevation works The main functions of cant are the following: * Improve distribution of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Track Cycling 2005
Track or Tracks may refer to: Routes or imprints * Ancient trackway, any track or trail whose origin is lost in antiquity * Animal track, imprints left on surfaces that an animal walks across * Desire path, a line worn by people taking the shortest/most convenient route across fields, parks or woods * Forest track, a track (unpaved road) or trail through a forest * Fossil trackway, a type of trace fossil, usually preserving a line of animal footprints * Trackway, an ancient route of travel or track used by animals * Trail * Vineyard track, a land estate (defined by law) meant for the growing of vine grapes Arts, entertainment, and media Films * ''Tracks'' (1922 film), an American silent Western film * ''Tracks'' (1976 film), an American film starring Dennis Hopper * ''Tracks'' (2003 film), an animated short film * ''Tracks'' (2013 film), an Australian film starring Mia Wasikowska * ''The Track'' (film), a 1975 French thriller–drama film Literature * ''Tracks'' (novel), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lubrication
Lubrication is the process or technique of using a lubricant to reduce friction and wear and tear in a contact between two surfaces. The study of lubrication is a discipline in the field of tribology. Lubrication mechanisms such as fluid-lubricated systems are designed so that the applied load is partially or completely carried by hydrodynamic or hydrostatic pressure, which reduces solid body interactions (and consequently friction and wear). Depending on the degree of surface separation, different lubrication regimes can be distinguished. Adequate lubrication allows smooth, continuous operation of machine elements, reduces the rate of wear, and prevents excessive stresses or seizures at bearings. By repelling water and other substances, it also reduces corrosion. When lubrication breaks down, components can rub destructively against each other, causing heat, local welding, destructive damage and failure. Lubrication mechanisms Fluid-lubricated systems As the load incre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rain
Rain is a form of precipitation where water drop (liquid), droplets that have condensation, condensed from Water vapor#In Earth's atmosphere, atmospheric water vapor fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. It provides water for hydroelectricity, hydroelectric power plants, crop irrigation, and suitable conditions for many types of ecosystems. The major cause of rain production is moisture moving along three-dimensional zones of temperature and moisture contrasts known as weather fronts. If enough moisture and upward motion is present, precipitation falls from convection, convective clouds (those with strong upward vertical motion) such as cumulonimbus (thunder clouds) which can organize into narrow rainbands. In mountainous areas, heavy precipitation is possible where upslope flow is maximized within windward sides of the terrain at elevation which forces moist air to condense and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Civil Engineering
Civil engineering is a regulation and licensure in engineering, professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads, bridges, canals, dams, airports, sewage systems, pipelines, structural element, structural components of buildings, and railways. Civil engineering is traditionally broken into a number of sub-disciplines. It is considered the second-oldest engineering discipline after military engineering, and it is defined to distinguish non-military engineering from military engineering. Civil engineering can take place in the public sector from municipal public works departments through to federal government agencies, and in the private sector from locally based firms to Fortune Global 500, ''Fortune'' Global 500 companies. History Civil engineering as a discipline Civil engineering is the application of physical and scientific principles for solv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ellerker Ave, Doncaster - From The Ground
Ellerker is a village and civil parish in the East Riding of Yorkshire, England. It is situated approximately west of Hull city centre and east of the market town of Howden. It lies south of the A63 road junction with the A1034 road. According to the 2011 UK Census, Ellerker parish had a population of 307, a decrease on the 2001 UK Census figure of 320. Ellerker lies within the Parliamentary constituency of Goole and Pocklington. 'Ellerker' means a "marsh where alder trees grow", from Old English ''alor'' or ''aler'' "alder" and Old Norse ''kjarr'' "marsh". The name was recorded as ''Alrecher'' in the 11th century and ''Alekirr'' in 1139. Same name as Orcher (Normandy, ''Aurichier'' 12th century). In 1823, Ellerker was in the parish of Brantingham and the Wapentake of Howdenshire. Village population was 249, including eight farmers, a corn miller, a shopkeeper, a tailor, a shoemaker, and a carpenter. Also listed in directories were three yeomen and a curate of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Queenslander
''The Queenslander'' was the weekly summary and literary edition of the ''Brisbane Courier'', the leading journal in the colony (later state) of Queensland since the 1850s. ''The Queenslander'' was launched by the Brisbane Newspaper Company in 1866, and discontinued in 1939. History ''The Queenslander'' was first published on 3 February 1866 in Brisbane by Thomas Blacket Stephens. The last edition was printed on 22 February 1939. In a country the size of Australia, a daily newspaper of some prominence could only reach the bush and outlying districts if it also published a weekly edition. Yet ''The Queenslander'', under the managing editorship of Gresley Lukin—managing editor from November 1873 until December 1880—also came to find additional use as a literary magazine. Angus Mackay, later a politician, was its first editor. In September 1919, a series of aerial photographs of Brisbane and its surrounding suburbs were published under the title, ''Brisbane By Air''. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Rail Track Corporation
The Australian Rail Track Corporation (ARTC) is an Australian Government-owned statutory corporation. It operates one of the largest rail networks in the nation, spanning across five states and 39 worksites. ARTC continues to expand the network through major infrastructure projects including Inland Rail, which is a new freight line between Melbourne and Brisbane via regional Victoria, NSW and Queensland that will complete Australia’s national freight network and better connect producers to markets. History In November 1996, the Australian Government announced a major rail reform package that included the sale of government-owned train operators Australian National and National Rail, and the establishment of ARTC to manage the sections of the interstate rail network which had been controlled by the two former organisations. ARTC was incorporated in February 1998, with operations starting in July 1998 when the lines managed by Australian National's Track Australia were tran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Degree Of Curvature
Degree of curve or degree of curvature is a measure of curvature of a circular arc used in civil engineering for its easy use in layout surveying. Definition The Degree (angle), degree of curvature is defined as the central angle to the ends of an agreed length of either an Arc (curvature), arc or a Chord (geometry), chord; various lengths are commonly used in different areas of practice. This angle is also the Body relative direction, change in forward direction as that portion of the curve is traveled. In an ''n''-degree curve, the forward Bearing (angle), bearing changes by ''n'' degree (angle), degrees over the standard length of arc or chord. Usage Curvature is usually measured in radius of curvature. A small circle can be easily laid out by just using radius of curvature, but degree of curvature is more convenient for calculating and laying out the curve if the radius is as large as a kilometer or mile, as is needed for large scale works like roads and railroads. By using ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tilting Train
A tilting train is a train that has a mechanism enabling increased speed on regular rail tracks. As a train (or other vehicle) rounds a curve at speed, objects inside the train experience centrifugal force. This can cause packages to slide about or seated passengers to feel squashed by the outboard armrest, and standing passengers to lose their balance. In such excessive speeds, it generates longitudinal force that can cause the train to physically tilt on one side, eventually causing it to Derailment, derail. Tilting trains are designed to counteract this by tilting the carriages towards the inside of the curve, thus compensating for the g-force. The train may be constructed such that inertial forces cause the tilting (''passive tilt''), or it may have a computer-controlled powered mechanism (''active tilt''). The first passive Pendulum car, tilting car design was built in the US in 1937, and an improved version was built in 1939. The beginning of World War II ended development. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cant Deficiency
In railway engineering, cant deficiency is defined in the context of travel of a rail transport, rail vehicle at constant speed on a constant-radius curve. Cant (road/rail), Cant itself refers to the superelevation of the curve, that is, the difference between the elevations of the outside and inside rails. ''Cant deficiency'' is present when a rail vehicle's speed on the curve is greater than the speed at which the components of Wheel-rail interface, wheel to rail force are Normal (geometry), normal to the plane of the track. In that case, the resultant force (aggregate gravitational force, gravitational and centrifugal force) exerts on the outside rail more than the inside rail, in which it creates lateral acceleration toward the outside of the curve (which could lead to tipping or derailing). In order to reduce cant deficiency, the speed can be reduced or the superelevation can be increased. The amount of cant deficiency is expressed in terms of required superelevation to be add ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
