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London Underground S7 And S8 Stock
The London Underground S7 and S8 Stock, commonly referred to as S Stock, is a type of passenger train running on the London Underground's subsurface lines since 2010. Manufactured by Bombardier Transportation's Derby Litchurch Lane Works, the S Stock was ordered to replace the A60, A62, C69, C77 and D78 stock on the Metropolitan, District, Hammersmith & City, and Circle lines, which all dated from the 1960s and 1970s. The order was for a total of 192 trains (1,403 cars), and consisted of two types, S7 Stock for the Circle, District and Hammersmith & City lines, and S8 Stock for the Metropolitan line, with differences in the arrangement of seating and number of cars. Both types have air-conditioning and lower floors to ease accessibility for disabled people, and also have open gangways to allow passengers to move from one car to another whilst the train is moving. The order was said to be the biggest single rolling-stock order in Britain at, according to Transport for London, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metropolitan Line
The Metropolitan line, colloquially known as the Met, is a London Underground line between in the City of London and and in Buckinghamshire, with branches to in Hertfordshire and in Hillingdon. Printed in magenta on the tube map, the line is in length and serves 34 stations (9 of which are step free). Between Aldgate and , the track is mostly in shallow " cut and cover" tunnels, apart from short sections at and Farringdon stations. The rest of the line is above ground, with a loading gauge of a similar size to those on main lines. Just under passenger journeys were made on the line in 2011/12. The line is one of just two Underground lines to cross the Greater London boundary (the other being the Central line). It is the only Underground line with an express service at peak times; the resulting longer distance between stations means trains can achieve the system's highest speeds of over on some sections. In 1863, the Metropolitan Railway began the world's first unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Current
Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic current. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify '' current'' or '' voltage''. Direct current may be converted from an alternating current supply by use of a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alternating current via an inverter. Direct current has many uses, from the charging of batteries to large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rail Class 378
The British Rail Class 378 ''Capitalstar'' is an electric multiple unit passenger train specifically designed for the London Overground network. It is part of Bombardier Transportation's Electrostar family. A total of 57 five-car trains have been built - most of which were originally built as three- or four-car units. The Class 378s were ordered in August 2006 in response to passenger dissatisfaction with existing mass-transit trains operated by Silverlink, such as the ageing fleet of Class 313. The procurement of a modern replacement was viewed as yielding better performance than the refurbishment of the existing units. Accordingly, a total of 57 Class 378s were manufactured at Bombardier's Derby site, the first example of which entered revenue service during July 2009. The type's introduction was roughly half a year later than originally planned, largely as a result of difficulties with multiple suppliers. In design terms the train is broadly similar to the Class 376 tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Overground
London Overground (also known simply as the Overground) is a suburban rail network serving London and its environs. Established in 2007 to take over Silverlink Metro routes, (via archive.org). it now serves a large part of Greater London as well as the home county of Hertfordshire, with 113 stations on nine different routes. The Overground forms part of the United Kingdom's National Rail network but it is under the concession control and branding of Transport for London. Operation has been contracted to Arriva Rail London since 2016. TfL assigned orange as a mode-specific colour for the Overground in branding and publicity including the roundel, on the Tube map, trains and stations. History Pre-1999 Rail services in Great Britain are mostly run under franchises operated by private train operating companies, marketed together as National Rail. The concept of developing a network of orbital services around London goes back to the independently produced Ringrail propos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Articulate Section S Stock
Articulate may refer to: * ''Articulate!'', a board game in which players describe words from different categories * Articulate brachiopods, brachiopods with toothed hinges and simple opening and closing muscles * Articulate sound, to move the tongue, lips, or other speech organs in order to make speech sounds * Articulated vehicle, a vehicle which has a pivoting joint in its construction * ''Articulate'' (TV series), a public television series about creative artists See also * Articulation (other) Articulation may refer to: Linguistics * Articulatory phonetics, the study of how humans produce speech sounds via the interaction of physiological structures ** Manner of articulation, how speech organs involved in making a sound make contact * ... * Articulata (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regenerative Brake
Regenerative braking is an energy recovery mechanism that slows down a moving vehicle or object by converting its kinetic energy into a form that can be either used immediately or stored until needed. In this mechanism, the electric traction motor uses the vehicle's momentum to recover energy that would otherwise be lost to the brake discs as heat. This method contrasts with conventional braking systems. In those systems, the excess kinetic energy is converted to unwanted and wasted heat due to friction in the brakes, or with rheostatic brakes, where the energy is recovered by using electric motors as generators but is immediately dissipated as heat in resistors. In addition to improving the overall efficiency of the vehicle, regeneration can significantly extend the life of the braking system as the mechanical parts will not wear out quickly. General principle The most common form of regenerative brake involves an electric motor functioning as an electric generator. In elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Door Not In Use Indicator S7
A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a ''doorway'' or ''portal''. A door's essential and primary purpose is to provide security by controlling access to the doorway (portal). Conventionally, it is a panel that fits into the doorway of a building, room, or vehicle. Doors are generally made of a material suited to the door's task. They are commonly attached by hinges, but can move by other means, such as slides or counterbalancing. The door may be able to move in various ways (at angles away from the doorway/portal, by sliding on a plane parallel to the frame, by folding in angles on a parallel plane, or by spinning along an axis at the center of the frame) to allow or prevent ingress or egress. In most cases, a door's interior matches its exterior side. But in other cases (e.g., a vehicle door) the two sides are radically different. Many doors incorporate locking ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amersham Tube Station
Amersham is a London Underground and National Rail station in Amersham in the Chiltern district of Buckinghamshire, England. Amersham station is a terminus of the London Underground's Metropolitan line. It is 23.7 miles (38.1 km) northwest of Charing Cross, making it the second furthest Underground station from central London and the second most westerly station of the whole London Underground system, after . It is in Travelcard Zone 9 (previously zone D). Amersham station is also served by Chiltern Railways, which run trains between London Marylebone and Aylesbury. From Aylesbury a shuttle service to Princes Risborough provides access to through services between Marylebone and Birmingham Snow Hill. The journey times between Amersham and Central London range between 33 and 60 minutes. The journey time between Amersham and Chalfont & Latimer is about three and a half minutes. History The station was opened on 1 September 1892 as part of the Metropolitan Railway (Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Designation
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Designation may refer to: * Designation (law), the process of determining an incumbent's successor * Professional certification * Designation (landmarks), an official classification determined by a government agency or historical society * Designation Scheme, a system for recognising library and museum collections in England See also * * * United States Department of Defense aerospace vehicle designation * Designate (Columbia) * Design A design is a plan or specification for the construction of an object or system or for the implementation of an activity or process or the result of that plan or specification in the form of a prototype, product, or process. The verb ''to design'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S Stock Northwood
S, or s, is the nineteenth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ess'' (pronounced ), plural ''esses''. History Origin Northwest Semitic šîn represented a voiceless postalveolar fricative (as in 'ip'). It originated most likely as a pictogram of a tooth () and represented the phoneme via the acrophonic principle. Ancient Greek did not have a phoneme, so the derived Greek letter sigma () came to represent the voiceless alveolar sibilant . While the letter shape Σ continues Phoenician ''šîn'', its name ''sigma'' is taken from the letter ''samekh'', while the shape and position of ''samekh'' but name of ''šîn'' is continued in the '' xi''. Within Greek, the name of ''sigma'' was influenced by its association with the Greek word (earlier ) "to hiss". The original name of the letter "sigma" may have been ''san'', but due to the complic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open-gangway
A gangway connection (or, more loosely, a corridor connection) is a flexible connector fitted to the end of a railway coach, enabling passengers to move from one coach to another without danger of falling from the train. Origins: Coaches in British and American railways The London and North Western Railway (LNWR) was the first British railway to provide passengers with the means to move from one coach to another while the train was in motion. In 1869 the LNWR built a pair of saloons for the use of Queen Victoria; these had six-wheel underframes (the bogie coach did not appear in Britain until 1874), and the gangway was fitted to only one end of each coach. The Queen preferred to wait until the train had stopped before using the gangway. In 1887, George M. Pullman introduced his patented vestibule cars. Older railroad cars had open platforms at their ends, which were used both for joining and leaving the train, but could also be used to step from one car to the next. This pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
