![]() ![]() Machine for generating alternating current. UoS Alley (US)Ī clear track in a switching yard. Horizontal (line) and vertical (top) position of a railway track,ĭescribed by curved track of horizontal radius R, tangent track where R Air bags are also designed to allow for shearĭuring transition through curves. Normally the train can continue to run in this condition, With a solid rubber core upon which the body will rest in the event of aīurst bag. CompressedĪir is fed into the bags under the control of a levelling valve toĮnsure the correct pressure is maintained. The car body rests on a set of the rubber airĬushions or bags, two being arranged on each bogie bolster. Known as air springs, many modern passenger vehicles now employ a form Gone by, a main air reservoir under a vehicle could collect so muchĬondensate (water) that a sharp frost could cause it to freeze andĮxpand sufficiently to split the tank. The train and the main reservoirs drained directly into it. To remove it, an old oil drum was wheeled under Systems collected so much moisture than up to 20 gallons of water couldīe drained from a train. Valves and systems, reducing efficiency and causing rust. If moisture is allowed to pass into pipework, it collects in Air Dryerĭevice provided to remove moisture from compressed air produced by aĬompressor. This is the most common type of train brake using compressed air. ![]() See air suspension and secondary suspension. Rubber vehicle suspension devices containing compressed air andĬontrolled to ensure pressure, and therefore body level, is maintainedĬonstant. The Italians who produced a tilting train design known as "Pendolino". A version of the technology was later used by Speed tilting train, the development of which was abandoned by British When thermal forces, additional to those in CWR, may be encountered suchĪs at long under-bridges which are themselves subject to expansion andĬontraction (US term: Breather Switch). Adjustment Switchĭevice which allows longitudinal rail movement to dissipate thermalįorces when CWR is adjacent to jointed track or other features notĭesigned to withstand thermal forces. The total weight carried on the driving axles of a vehicle and therefore contributing to adhesion. Generally taken as 0.3 to 0.4 for dry rail, but can be as low as 0.01 for icy and greasy rail. The adhesion coefficientįor rolling motion is usually referred to as m R. Ratio of the tangential and normal forces that exist between the wheelĪnd the rail at standstill and during motion. Used in some automatic fare collection systems to allow passengers to increase the residual value of a stored value ticket. Sideways movements can be used to stiffen hydraulic resistance inĭampers or induce hydraulic jacking movement to adjust body tilt. Microprocessor control to detect changes in track formation or directionĪnd then signal changes in the suspension configuration. Recent development in train ride control, active suspension uses Systems or infrastructure components to the railway network managed byĪ bridge connecting two areas of land which were under common ownership but separated when the railway was built. Part of the process to introduce new types of rolling stock, onboard 'acceptance' means the permission given by a signalman for a train toĮnter the section of line he controls. Regulations because of its weight or weight distribution. Road load which falls outside the scope of the Construction and Use US body for determination of railway engineering standards, equivalent to the European UIC. The centre axle is unpowered or trailing. ![]() Two 6-wheeled bogies where the outer axles of each bogie are powered and Prepared by the team at the Railway Research Centre at the University of Birmingham.Ī wheel notation (not now common) for a locomotive with #The railway lines download#You can download a copy of the following. This page provides a modern list of terminology i.e., a glossary for the most common railway terms. Design Details of Railways, Railroads and Metros.The Development & Principles of British Signalling.Early Design Aspects of Light Rail Systems.The Early History of the DC Traction Motor. ![]()
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