Bremer Vulkan AG was a prominent German shipbuilding company located at the Weser river in Bremen-Vegesack . It was founded in 1893 and closed in 1997 because of financial problems and mismanagement.
104-564: All together Bremer Vulkan built about 1100 ships—including the ships of the predecessor Johann Lange Shipyard—of different types. It is remarkable that the Bremer Vulkan, with the exception of both World Wars, only built civilian ships; production of naval ships except during wartime first started in the 1980s. Bremer Vulkan AG was founded 1893 in Vegesack-a suburb of the city of Bremen–by a group of investors and Bremen merchants and by overtaking
208-451: A General Electric electrical engineer, developed and patented a reliable direct current electrical control system (subsequent improvements were also patented by Lemp). Lemp's design used a single lever to control both engine and generator in a coordinated fashion, and was the prototype for all diesel–electric locomotive control. In 1917–18, GE produced three experimental diesel–electric locomotives using Lemp's control design. In 1924,
312-480: A conventional diesel or electric locomotive would be unsuitable. An example is maintenance trains on electrified lines when the electricity supply is turned off. Another use is in industrial facilities where a combustion-powered locomotive (i.e., steam- or diesel-powered ) could cause a safety issue due to the risks of fire, explosion or fumes in a confined space. Battery locomotives are preferred for mines where gas could be ignited by trolley-powered units arcing at
416-458: A diesel–electric locomotive ( E 2 original number Юэ 001/Yu-e 001) started operations. It had been designed by a team led by Yury Lomonosov and built 1923–1924 by Maschinenfabrik Esslingen in Germany. It had 5 driving axles (1'E1'). After several test rides, it hauled trains for almost three decades from 1925 to 1954. An electric locomotive is a locomotive powered only by electricity. Electricity
520-432: A feature that Bremen shares with most of Germany and its neighbouring countries, though. Precipitation is distributed fairly even around the year with a small peak in summer mainly due to convective precipitation, i.e. showers and thunderstorms. Snowfall and the period of snow cover are variable; whereas in some years, hardly any snow accumulation occurs, there has recently been a series of unusually snowy winters, peaking in
624-423: A ground and polished journal that is integral to the axle. The other side of the housing has a tongue-shaped protuberance that engages a matching slot in the truck (bogie) bolster, its purpose being to act as a torque reaction device, as well as a support. Power transfer from motor to axle is effected by spur gearing , in which a pinion on the motor shaft engages a bull gear on the axle. Both gears are enclosed in
728-410: A high ride quality and less electrical equipment; but EMUs have less axle weight, which reduces maintenance costs, and EMUs also have higher acceleration and higher seating capacity. Also some trains, including TGV PSE , TGV TMST and TGV V150 , use both non-passenger power cars and additional passenger motor cars. Locomotives occasionally work in a specific role, such as: The wheel arrangement of
832-547: A higher power-to-weight ratio than DC motors and, because of the absence of a commutator , were simpler to manufacture and maintain. However, they were much larger than the DC motors of the time and could not be mounted in underfloor bogies : they could only be carried within locomotive bodies. In 1894, Hungarian engineer Kálmán Kandó developed a new type 3-phase asynchronous electric drive motors and generators for electric locomotives. Kandó's early 1894 designs were first applied in
936-488: A larger locomotive named Galvani , exhibited at the Royal Scottish Society of Arts Exhibition in 1841. The seven-ton vehicle had two direct-drive reluctance motors , with fixed electromagnets acting on iron bars attached to a wooden cylinder on each axle, and simple commutators . It hauled a load of six tons at four miles per hour (6 kilometers per hour) for a distance of one and a half miles (2.4 kilometres). It
1040-410: A liquid-tight housing containing lubricating oil. The type of service in which the locomotive is used dictates the gear ratio employed. Numerically high ratios are commonly found on freight units, whereas numerically low ratios are typical of passenger engines. Electricity is typically generated in large and relatively efficient generating stations , transmitted to the railway network and distributed to
1144-616: A locomotive as it carried a payload. The earliest gasoline locomotive in the western United States was built by the Best Manufacturing Company in 1891 for San Jose and Alum Rock Railroad . It was only a limited success and was returned to Best in 1892. The first commercially successful petrol locomotive in the United Kingdom was a petrol–mechanical locomotive built by the Maudslay Motor Company in 1902, for
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#17330859748711248-483: A locomotive describes how many wheels it has; common methods include the AAR wheel arrangement , UIC classification , and Whyte notation systems. In the second half of the twentieth century remote control locomotives started to enter service in switching operations, being remotely controlled by an operator outside of the locomotive cab. The main benefit is one operator can control the loading of grain, coal, gravel, etc. into
1352-524: A mid-train locomotive that is controlled remotely from the lead unit. The word locomotive originates from the Latin loco 'from a place', ablative of locus 'place', and the Medieval Latin motivus 'causing motion', and is a shortened form of the term locomotive engine , which was first used in 1814 to distinguish between self-propelled and stationary steam engines . Prior to locomotives,
1456-403: A separate fourth rail for this purpose. The type of electrical power used is either direct current (DC) or alternating current (AC). Various collection methods exist: a trolley pole , which is a long flexible pole that engages the line with a wheel or shoe; a bow collector , which is a frame that holds a long collecting rod against the wire; a pantograph , which is a hinged frame that holds
1560-476: A short three-phase AC tramway in Evian-les-Bains (France), which was constructed between 1896 and 1898. In 1918, Kandó invented and developed the rotary phase converter , enabling electric locomotives to use three-phase motors whilst supplied via a single overhead wire, carrying the simple industrial frequency (50 Hz) single phase AC of the high voltage national networks. In 1896, Oerlikon installed
1664-416: A steam locomotive was about two and a half times larger than the cost of supporting an equivalent diesel locomotive, and the daily mileage they could run was lower. Between about 1950 and 1970, the majority of steam locomotives were retired from commercial service and replaced with electric and diesel–electric locomotives. While North America transitioned from steam during the 1950s, and continental Europe by
1768-482: A third of the total population, could be classified as having non-German origin/ethnicity. Number of minorities in Bremen by nationality as of 31 December 2022: The recent influx has somewhat moderated the tendency toward an accelerated ageing of the population. As it is, more than half the population of the state of Bremen are over 50, and more than a quarter are over 60. The Stadtbürgerschaft (municipal assembly)
1872-696: A water frontage of 1,500 metres (4,900 ft). Six slips equipped with modern electric travelling cranes were capable of building the largest vessels of that time. With an average annual delivery of about 40000 BRT it became the greatest civilian shipbuilding company in the German Empire , followed by Flensburger Schiffbaubetriebe in Flensburg , Joh. C. Tecklenborg in Bremerhaven and Vulcan Stettin in Stettin . The number of co-workers had increased from about 60 at
1976-521: A worldwide operating company for manufacturing wool and trading in wool and similar products, is headquartered in Bremen. Gleistein is a German cordage factory with head office in Bremen. Bremen has an international airport situated 3 km (2 mi) south of the city centre. Trams in Bremen and local bus services are offered by the Bremer Straßenbahn AG (translates from German as Bremen Tramways Corporation ), often abbreviated BSAG,
2080-414: A year later making exclusive use of steam power for passenger and goods trains . The steam locomotive remained by far the most common type of locomotive until after World War II . Steam locomotives are less efficient than modern diesel and electric locomotives, and a significantly larger workforce is required to operate and service them. British Rail figures showed that the cost of crewing and fuelling
2184-403: Is twinned with: Circles est. 1500: Bavarian , Swabian , Upper Rhenish , Lower Rhenish–Westphalian , Franconian , (Lower) Saxon Locomotive A locomotive is a rail transport vehicle that provides the motive power for a train . If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit , motor coach , railcar or power car ;
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#17330859748712288-458: Is a locomotive whose primary power source is a steam engine . The most common form of steam locomotive also contains a boiler to generate the steam used by the engine. The water in the boiler is heated by burning combustible material – usually coal, wood, or oil – to produce steam. The steam moves reciprocating pistons which are connected to the locomotive's main wheels, known as the " driving wheels ". Both fuel and water supplies are carried with
2392-409: Is a plant of EADS Astrium and the headquarters of OHB-System , respectively the first and the third space companies of European Union. There is also a Mercedes-Benz factory in Bremen, building the C , CLK , SL , SLK , and GLK series of cars. Beck & Co 's headlining brew Beck's and St Pauli Girl beers are brewed in Bremen. In past centuries when Bremen's port was the "key to Europe",
2496-516: Is a statue dedicated to it in front of the city hall. Bremen has a reputation as a working-class city. The city is home to many multinationals and manufacturing companies headquartered in Bremen include Hachez chocolate and Vector Foiltec . Bundesliga club SV Werder Bremen play in the Weserstadion on the bank of the Weser. For most of its 1,200 year history, Bremen was an independent city within
2600-585: Is currently made up of 72 of the 87 legislators of the state legislature, the Bremische Bürgerschaft who reside in the city of Bremen. The legislature is elected by the citizens of Bremen every four years. Bremen has a reputation as a left-wing city. The port, shipyards and related industries sustained a large and unionised working class. This translated into support for the Social Democrats , considered Bremen's natural governing party. However, in
2704-823: Is home to dozens of historical galleries and museums, ranging from historical sculptures to major art museums, such as the Bremen Overseas Museum ( Übersee-Museum Bremen ) or the Weserburg . The Bremen City Hall and the Bremen Roland form the UNESCO World Heritage Site "Town Hall and Roland on the Marketplace of Bremen". Bremen is well-known through the Brothers Grimm's fairy tale " Town Musicians of Bremen " ( Die Bremer Stadtmusikanten ), and there
2808-416: Is supplied to moving trains with a (nearly) continuous conductor running along the track that usually takes one of three forms: an overhead line , suspended from poles or towers along the track or from structure or tunnel ceilings; a third rail mounted at track level; or an onboard battery . Both overhead wire and third-rail systems usually use the running rails as the return conductor but some systems use
2912-516: Is that these power cars are integral part of a train and are not adapted for operation with any other types of passenger coaches. On the other hand, many high-speed trains such as the Shinkansen network never use locomotives. Instead of locomotive-like power-cars, they use electric multiple units (EMUs) or diesel multiple units (DMUs) – passenger cars that also have traction motors and power equipment. Using dedicated locomotive-like power cars allows for
3016-712: Is the Weserstadion , a pure football stadium, almost completely surrounded by solar cells. It is one of the biggest buildings in Europe delivering renewable energy. With 18,000 students, the University of Bremen is the largest university in Bremen, and is also home to the international Goethe-Institut and the Fallturm Bremen . Additionally, Bremen has a University of the Arts and the Bremen University of Applied Sciences . In 2001,
3120-620: The City Municipality of Bremen ( German : Stadtgemeinde Bremen , IPA: [ˈʃtatɡəˌmaɪndə ˈbʁeːmən] ), is the capital of the German state of the Free Hanseatic City of Bremen ( Freie Hansestadt Bremen ), a two-city-state consisting of the cities of Bremen and Bremerhaven . With about 577,000 inhabitants, the Hanseatic city is the 11th-largest city of Germany and
3224-585: The EMD FL9 and Bombardier ALP-45DP There are three main uses of locomotives in rail transport operations : for hauling passenger trains, freight trains, and for switching (UK English: shunting). Freight locomotives are normally designed to deliver high starting tractive effort and high sustained power. This allows them to start and move long, heavy trains, but usually comes at the cost of relatively low maximum speeds. Passenger locomotives usually develop lower starting tractive effort but are able to operate at
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3328-601: The Elbe-Weser Triangle . The Lesum , and its tributaries, the Wümme and Hamme , the Schönebecker Aue and Blumenthaler Aue , are the downstream tributaries of the Weser. The city's municipal area is about 38 kilometres (24 miles) long and 16 kilometres (10 miles) wide. In terms of area, Bremen is the eleventh largest city in Germany; and in terms of population the second largest city in northwest Germany after Hamburg and
3432-566: The European Union , and after 2015 with the settlement of refugees from Syria and other war-torn regions. Today Bremen has a population of 567,000 and is the 11th largest city in Germany and 5th largest city by area with area of 318.21 km (122.86 sq mi), which makes this city area bigger than Munich . By the second decade of the century out of a population (including Bremerhaven ) of approximately 680,000, over 115,000 had foreign citizenship, and nearly twice that number, almost
3536-552: The Low German dialect area after Hamburg, Dortmund and Essen . Bremen's port , together with the port of Bremerhaven at the mouth of the Weser, is the second-largest port in Germany after the Port of Hamburg . The airport of Bremen ( Flughafen Bremen " Hans Koschnick " ) lies in the southern borough of Neustadt-Neuenland and is Germany's 12th-busiest airport . Bremen is a major cultural and economic hub of Northern Germany. The city
3640-667: The North Sea and its transition to the Outer Weser by Bremerhaven. Opposite Bremen's Altstadt is the point where the "Middle Weser" becomes the "Lower Weser" and, from the area of Bremen's port, the river has been made navigable to ocean-going vessels. The region on the left bank of the Lower Weser, through which the Ochtum flows, is the Weser Marshes, the landscape on its right bank is part of
3744-671: The Stockton & Darlington Railway in the north-east of England, which was the first public steam railway in the world. In 1829, his son Robert built The Rocket in Newcastle upon Tyne. Rocket was entered into, and won, the Rainhill Trials . This success led to the company emerging as the pre-eminent early builder of steam locomotives used on railways in the UK, US and much of Europe. The Liverpool & Manchester Railway , built by Stephenson, opened
3848-510: The US Air Force . By the so-called "precise bombing" many buildings and U-boats under construction as well as surrounding private buildings were destroyed or damaged. 116 people were killed and additional 118 injured. Despite the great destruction, production of U-boats could be continued within a few weeks. During the war about 10 kilometres (6.2 mi) downstream from the BV-shipyard between
3952-414: The driving wheels by a transmission. They typically keep the engine running at a near-constant speed whether the locomotive is stationary or moving. Internal combustion locomotives are categorised by their fuel type and sub-categorised by their transmission type. The first internal combustion rail vehicle was a kerosene -powered draisine built by Gottlieb Daimler in 1887, but this was not technically
4056-550: The edge-railed rack-and-pinion Middleton Railway ; this is generally regarded as the first commercially successful locomotive. Another well-known early locomotive was Puffing Billy , built 1813–14 by engineer William Hedley for the Wylam Colliery near Newcastle upon Tyne . This locomotive is the oldest preserved, and is on static display in the Science Museum, London. George Stephenson built Locomotion No. 1 for
4160-599: The public transport provider for Bremen. The Bremen S-Bahn covers the Bremen/Oldenburg Metropolitan Region , from Bremerhaven in the north to Twistringen in the south and from Oldenburg in the west, centred on Bremen Central Station . It has been in operation since 2010. This network unified existing regional transport in Bremen as well as surrounding cities, including Bremerhaven , Delmenhorst , Twistringen , Nordenham , Oldenburg , and Verden an der Aller . The network lies completely within
4264-500: The traction motors and axles adapts the power output to the rails for freight or passenger service. Passenger locomotives may include other features, such as head-end power (also referred to as hotel power or electric train supply) or a steam generator . Some locomotives are designed specifically to work steep grade railways , and feature extensive additional braking mechanisms and sometimes rack and pinion. Steam locomotives built for steep rack and pinion railways frequently have
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4368-526: The 1805 founded Johann Lange Shipyard. Two years later the Bremer Vulkan bought the Bremer Schiffbaugesellschaft – former H. F. Ulrichs Shipyard which launched the first ship in 1839 - including all its modern shipbuilding facilities. The first director of the Bremer Vulkan became the engineer Victor Nawatzki (1855–1940). In the following years the Bremer Vulkan increased rapidly. By 1908 it covered an area of about 80 acres (32 ha) and
4472-493: The 1970s, in other parts of the world, the transition happened later. Steam was a familiar technology that used widely-available fuels and in low-wage economies did not suffer as wide a cost disparity. It continued to be used in many countries until the end of the 20th century. By the end of the 20th century, almost the only steam power remaining in regular use around the world was on heritage railways . Internal combustion locomotives use an internal combustion engine , connected to
4576-525: The 1980s mechanization of the port and closure of the city's leading shipbuilder induced an employment crisis and shook the confidence of the party's traditional voter base. The SPD, which had still polled 51% in 1987, lost its effective majority. The once dominant left-liberal vote split, and coalition government became the norm. The state today is governed by a coalition of the Social Democratic Party, The Greens and The Left . In November 2019
4680-630: The 40 km Burgdorf—Thun line , Switzerland. The first implementation of industrial frequency single-phase AC supply for locomotives came from Oerlikon in 1901, using the designs of Hans Behn-Eschenburg and Emil Huber-Stockar ; installation on the Seebach-Wettingen line of the Swiss Federal Railways was completed in 1904. The 15 kV, 50 Hz 345 kW (460 hp), 48 tonne locomotives used transformers and rotary converters to power DC traction motors. Italian railways were
4784-682: The BIW did not reach the threshold in Bremen (and will only receive one seat in Bremerhaven, none in Bremen). Neustadt, Südervorstadt and Gartenstadt Süd between Alte Neustadt and the airport city More contemporary tourist attractions include: The Freie Waldorfschule in Bremen-Sebaldsbrück was Germany's first school built to the Passivhaus low-energy building standard. According to data from
4888-523: The Bremen suburbs Rekum [ de ; nds ] and Farge the submarine bunker Valentin was under construction. Here under management of the BV and beginning end of 1945 monthly 15 U-boats should be assembled from prefabricated sections. Those were delivered from the following shipyards Bremer Vulkan AG, Deschimag AG Weser in Bremen, Deschimag Seebeck AG in Bremerhaven and Blohm + Voss in Hamburg . However,
4992-585: The City of Bremen. The inner city lies on a Weser dune, which reaches a natural height of 10.5 metres (34 feet, 6 inches) above sea level at Bremen Cathedral ; its highest point, though, is 14.4 metres (47 feet, 3 inches) above sea level and lies to the east at the Polizeihaus , Am Wall 196. The highest natural feature in the city of Bremen is 32.5 metres (107 feet) above sea level and lies in Friedehorst Park in
5096-536: The Deptford Cattle Market in London . It was an 80 hp locomotive using a three-cylinder vertical petrol engine, with a two speed mechanical gearbox. Diesel locomotives are powered by diesel engines . In the early days of diesel propulsion development, various transmission systems were employed with varying degrees of success, with electric transmission proving to be the most popular. In 1914, Hermann Lemp ,
5200-728: The German reunification in 1990 the Vulkan Group was enlarged by the Division Mecklenburg-Vorpommern , including the east German shipyards Matthias-Thesen Werft in Wismar and Volkswerft Stralsund in Stralsund . At that time Vulkan Group included all together about 22,000 co-workers in Germany, of that about 18,000 in the shipbuilding divisions. After 1996 bankruptcy because of financial problems and mismanagement, Bremer Vulkan closed
5304-557: The Organization of Economic Cooperation and Development, Bremen had a GDP per capita of $ 53,379 in 2013, higher than the average for Germany as a whole. For comparison, in 2013, the World Bank reported Germany had a GDP per capita of $ 46,268, and the EU overall had a GDP per capita of $ 35,408 in the same year. Bremen is the second development centre of the region, after Hamburg . It forms part of
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#17330859748715408-719: The aforementioned institutes, especially within the MARUM a center for marine environmental sciences, affiliated to the University of Bremen. Furthermore, The Fraunhofer Society is present in Bremen with centers for applied material research (IFAM ) and medical image computing (MEVIS ). The Centre for Economics Education in the Unterwesergebiet (BWU) is a vocational education and training institution based in Bremen. It specializes in providing business-related education and professional development programs for individuals and businesses. Bremen
5512-664: The area of the Bremen-Lower Saxony Transport Association , whose tariff structure applies. Bremen is home to the football team Werder Bremen , who won the German Football Championship for the fourth time and the German Football Cup for the fifth time in 2004, making them only the fourth team in German football history to win the double; the club won the German Football Cup for the sixth time in 2009. The home stadium of SV Werder Bremen
5616-542: The astronomer Heinrich Wilhelm Matthias Olbers reported to have measured −27.3 °C on 23 January 1823. Being at some distance from the main North Sea, Bremen still has a somewhat wider temperature range than Bremerhaven that is located on the mouth of Weser. Average temperatures have risen continually over the last decades, leading to a 0.6 °C (1.1 °F) rise in the mean annual temperature between 1961–90 and 1981–2010 reference periods. As in most parts of Germany,
5720-756: The beginning up to about 3,300 in 1912. During World War I the Bremer Vulkan built warships. All together 11 minesweepers ( M 39 – M 42 and M 54 – M 56 , M 71 – M 74 ) and in cooperation with the Germaniawerft in Kiel some submarine hulls and 6 complete submarines ( U-160 – U-163 ) were built for the Kaiserliche Marine ( Imperial German Navy ). After the war Bremer Vulkan continued its successful development. Different types of ships were built first mainly for German ship owners and with an increasing amount also for foreign ship owners later. An important progress
5824-808: The boiler tilted relative to the locomotive frame , so that the boiler remains roughly level on steep grades. Locomotives are also used on some high-speed trains. Some of them are operated in push-pull formation with trailer control cars at another end of a train, which often have a cabin with the same design as a cabin of locomotive; examples of such trains with conventional locomotives are Railjet and Intercity 225 . Also many high-speed trains, including all TGV , many Talgo (250 / 350 / Avril / XXI), some Korea Train Express , ICE 1 / ICE 2 and Intercity 125 , use dedicated power cars , which do not have places for passengers and technically are special single-ended locomotives. The difference from conventional locomotives
5928-461: The bunker was not finished before the end of the war and no U-boats were ever built there. The building itself still exists today and is partly used as a memorial to the many forced labourers from nearby concentration camps who worked and died there during construction of the bunker. Dr. Robert Kabelac – director of the BV from 1935 to 1960 – managed to avoid the dismantling of the BV after war as this happened to most other German shipyards. The company
6032-460: The center section would have a 200-ton reactor chamber and steel walls 5 feet thick to prevent releases of radioactivity in case of accidents. He estimated a cost to manufacture atomic locomotives with 7000 h.p. engines at approximately $ 1,200,000 each. Consequently, trains with onboard nuclear generators were generally deemed unfeasible due to prohibitive costs. In 2002, the first 3.6 tonne, 17 kW hydrogen (fuel cell) -powered mining locomotive
6136-461: The cities of Oldenburg and Bremerhaven, and has a population of around 2.8 million people. Bremen is contiguous with the Lower Saxon towns of Delmenhorst , Stuhr , Achim , Weyhe , Schwanewede and Lilienthal . There is an exclave of Bremen in Bremerhaven, the "Citybremian Overseas Port Area Bremerhaven" ( Stadtbremisches Überseehafengebiet Bremerhaven ). Bremen is the fourth-largest city in
6240-974: The city also had a large number of wine importers, but the number is down to a precious few. Apart from that there is another link between Bremen and wine: about 800 years ago, quality wines were produced here. Bremen is not the place where the largest wine cellar in the world is located although it was once said to hold over 1 million bottles, but during WWII was raided by occupying forces. A large number of food producing or trading companies are located in Bremen with their German or European headquarters: Anheuser-Busch InBev (Beck's Brewery), Kellogg's , Kraft Foods (Kraft, Jacobs Coffee, Milka Chocolate, Milram, Miràcoli), Frosta (frosted food), Nordsee (chain of sea fast food), Melitta Kaffee, Eduscho Kaffee, Azul Kaffee, Vitakraft (pet articles and food for cats, dogs, birds, fish, rodents and other pets), Atlanta AG (Chiquita banana), chocolatier Hachez (fine chocolate and confiserie), feodora chocolatier. Bremer Woll-Kämmerei (BWK),
6344-407: The collecting shoes against the wire in a fixed geometry; or a contact shoe , which is a shoe in contact with the third rail. Of the three, the pantograph method is best suited for high-speed operation. Electric locomotives almost universally use axle-hung traction motors, with one motor for each powered axle. In this arrangement, one side of the motor housing is supported by plain bearings riding on
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#17330859748716448-455: The collection shoes, or where electrical resistance could develop in the supply or return circuits, especially at rail joints, and allow dangerous current leakage into the ground. Battery locomotives in over-the-road service can recharge while absorbing dynamic-braking energy. The first known electric locomotive was built in 1837 by chemist Robert Davidson of Aberdeen , and it was powered by galvanic cells (batteries). Davidson later built
6552-672: The confederal jurisdiction of the Holy Roman Empire . Its governing merchants and guilds were at the centre of the Hanseatic League that sought to monopolise the North Sea and Baltic Sea trade. To enlarge and confirm its independence, the city had, until the Reformation , to contend with the temporal power of the Church , and after the Thirty Years' War with Sweden , the masters of
6656-405: The driving wheels by means of connecting rods, with no intervening gearbox. This means the combination of starting tractive effort and maximum speed is greatly influenced by the diameter of the driving wheels. Steam locomotives intended for freight service generally have smaller diameter driving wheels than passenger locomotives. In diesel–electric and electric locomotives the control system between
6760-414: The early 1950s, Lyle Borst of the University of Utah was given funding by various US railroad line and manufacturers to study the feasibility of an electric-drive locomotive, in which an onboard atomic reactor produced the steam to generate the electricity. At that time, atomic power was not fully understood; Borst believed the major stumbling block was the price of uranium. With the Borst atomic locomotive,
6864-422: The eleventh largest in the whole of Germany (see: List of cities in Germany ) . Bremen lies about 50 kilometres (31 miles) east of the city of Oldenburg , 110 kilometres (68 miles) southwest of Hamburg , 120 kilometres (75 miles) northwest of Hanover , 100 kilometres (62 miles) north of Minden and 105 kilometres (65 miles) northeast of Osnabrück . Part of Bremerhaven 's port territory forms an exclave of
6968-451: The end of the 1970s the BV became a world leader in container delivered capacity and in innovative container ship design. Beginning in the 1980s for the first time except wartimes of course also naval ships were built. As the general contractor the BV started in cooperation with other German shipbuilding companies the construction of frigates for the German Navy . In the 1980s the BV merged with other German shipbuilding companies and became
7072-457: The first commercial example of the system on the Lugano Tramway . Each 30-tonne locomotive had two 110 kW (150 hp) motors run by three-phase 750 V 40 Hz fed from double overhead lines. Three-phase motors run at constant speed and provide regenerative braking , and are well suited to steeply graded routes, and the first main-line three-phase locomotives were supplied by Brown (by then in partnership with Walter Boveri ) in 1899 on
7176-463: The first in the world to introduce electric traction for the entire length of a main line rather than just a short stretch. The 106 km Valtellina line was opened on 4 September 1902, designed by Kandó and a team from the Ganz works. The electrical system was three-phase at 3 kV 15 Hz. The voltage was significantly higher than used earlier and it required new designs for electric motors and switching devices. The three-phase two-wire system
7280-516: The first recorded steam-hauled railway journey took place as another of Trevithick's locomotives hauled a train from the Penydarren ironworks, in Merthyr Tydfil , to Abercynon in South Wales. Accompanied by Andrew Vivian , it ran with mixed success. The design incorporated a number of important innovations including the use of high-pressure steam which reduced the weight of the engine and increased its efficiency. In 1812, Matthew Murray 's twin-cylinder rack locomotive Salamanca first ran on
7384-416: The fuselage section (excluding the cockpit) of the A400M military transport aircraft takes place before delivery on to Spain. More than 3,100 persons are employed at Airbus Bremen, the second largest Airbus site in Germany. As part of the Centre of Excellence – Wing/Pylon, Bremen is responsible for the design and manufacture of high-lift systems for the wings of Airbus aircraft. The entire process chain for
7488-400: The high speeds required to maintain passenger schedules. Mixed-traffic locomotives (US English: general purpose or road switcher locomotives) meant for both passenger and freight trains do not develop as much starting tractive effort as a freight locomotive but are able to haul heavier trains than a passenger locomotive. Most steam locomotives have reciprocating engines, with pistons coupled to
7592-492: The high-lift elements is established here, including the project office, technology engineering, flight physics, system engineering, structure development, verification tests, structural assembly, wing equipping and ultimate delivery to the final assembly line. In addition, Bremen manufactures sheet metal parts like clips and thrust crests for all Airbus aircraft as part of the Centre of Excellence – Fuselage and Cabin. In Bremen there
7696-654: The largest shipbuilding company in Germany. The new Bremer Vulkan Verbund AG or the so-called Vulkan Group consisted of the following divisions at that time: Division Shipbuilding , including the seven German shipyards Bremer Vulkan Werft ( Bremen-Vegesack ), Geeste Metallbau GmbH ( Bremen ), Flender Werft ( Lübeck ), Lloyd Werft , Rickmers Lloyd Dockbetrieb GmbH , Schichau Seebeckwerft (all in Bremerhaven) and Neue Jadewerft ( Wilhelmshaven ) Division Naval Shipbuilding Division Industry Division Electronic and Systems Technology Division Services After
7800-639: The locomotive, either on the locomotive itself, in bunkers and tanks , (this arrangement is known as a " tank locomotive ") or pulled behind the locomotive, in tenders , (this arrangement is known as a " tender locomotive "). The first full-scale working railway steam locomotive was built by Richard Trevithick in 1802. It was constructed for the Coalbrookdale ironworks in Shropshire in England though no record of it working there has survived. On 21 February 1804,
7904-656: The locomotives were retired shortly afterward. All four locomotives were donated to museums, but one was scrapped. The others can be seen at the Boone and Scenic Valley Railroad , Iowa, and at the Western Railway Museum in Rio Vista, California. The Toronto Transit Commission previously operated a battery electric locomotive built by Nippon Sharyo in 1968 and retired in 2009. London Underground regularly operates battery–electric locomotives for general maintenance work. In
8008-484: The motive force for railways had been generated by various lower-technology methods such as human power, horse power, gravity or stationary engines that drove cable systems. Few such systems are still in existence today. Locomotives may generate their power from fuel (wood, coal, petroleum or natural gas), or they may take power from an outside source of electricity. It is common to classify locomotives by their source of energy. The common ones include: A steam locomotive
8112-494: The northwestern borough of Burglesum. As a result, Bremen has the lowest high point of all the German states . Bremen has a moderate oceanic climate ( Köppen climate classification Cfb ) due to its proximity to the North Sea coast and temperate maritime air masses that move in with the predominantly westerly winds from the Atlantic Ocean. However, periods in which continental air masses predominate may occur at any time of
8216-665: The power supply of choice for subways, abetted by the Sprague's invention of multiple-unit train control in 1897. The first use of electrification on a main line was on a four-mile stretch of the Baltimore Belt Line of the Baltimore & Ohio (B&O) in 1895 connecting the main portion of the B&;O to the new line to New York through a series of tunnels around the edges of Baltimore's downtown. Three Bo+Bo units were initially used, at
8320-710: The private Jacobs University Bremen was founded. All major German research foundations maintain institutes in Bremen, with a focus on marine sciences: The Max Planck Society with the Max Planck Institute for Marine Microbiology , and the Gottfried Wilhelm Leibniz Scientific Community with the Center for Tropical Marine Ecology (zmt). The Bremerhaven-based Alfred-Wegener-Institute of the Helmholtz Association closely cooperates with
8424-408: The production network of Airbus SAS and this is where equipping of the wing units for all widebody Airbus aircraft and the manufacture of small sheet metal parts takes place. Structural assembly, including that of metal landing flaps, is another focal point. Within the framework of Airbus A380 production, assembly of the landing flaps (high lift systems) is carried out here. The pre-final assembly of
8528-606: The record year 2010 counting 84 days with a snow cover. Nevertheless, snow accumulation of more than 20 centimetres (8 in) remains exceptional, the record being 68 centimetres (26.8 in) of snow on 18 February 1979. The warmest months in Bremen are June, July, and August, with average high temperatures of 20.2 to 22.6 °C (68.4 to 72.7 °F). The coldest are December, January, and February, with average low temperatures of −1.1 to 0.3 °C (30.0 to 32.5 °F). Typical of its maritime location, autumn tends to remain mild well into October, while spring arrives later than in
8632-419: The reference periods of 1961–90 and 1991–2020. This trend has continued over the last 10 years (2011–2020), which average 1680 hours of sunshine, almost 200 hours more than in the international reference period of 1961–90. Nevertheless, especially the winters remain extremely gloomy by international standards with December averaging hardly more than one hour of sunshine (out of 7 astronomically possible) per day,
8736-505: The right-wing group Phalanx 18 was banned by the city-state of Bremen. One of the two mayors ( Bürgermeister ) is elected President of the Senate ( Präsident des Senats ) and serves as head of the city and the state. The current mayor is Andreas Bovenschulte . Provisional results; the AfD did not reach the 5% threshold in Bremerhaven (and will hence only receive seats for votes from Bremen),
8840-585: The second-largest city in Northern Germany after Hamburg . Bremen is the largest city on the River Weser , the longest river flowing entirely in Germany, lying some 60 km (37 mi) upstream from its mouth into the North Sea at Bremerhaven , and is completely surrounded by the state of Lower Saxony . Bremen is the centre of the Northwest Metropolitan Region , which also includes
8944-761: The shipyard in Vegesack in 1997. Some of the affiliated shipyards as the Lloyd Shipyard in Bremerhaven and the shipyards in Eastern Germany survived this bankruptcy. The naval shipbuilding division was partly taken over by the Lürssen Shipbuilding Group . THE VULKAN GROUP, information brochure published by BV, 1992, page 28 53°10′31″N 8°35′54″E / 53.17528°N 8.59833°E / 53.17528; 8.59833 Bremen#History Bremen ( Low German also: Breem or Bräm ), officially
9048-425: The south end of the electrified section; they coupled onto the locomotive and train and pulled it through the tunnels. DC was used on earlier systems. These systems were gradually replaced by AC. Today, almost all main-line railways use AC systems. DC systems are confined mostly to urban transit such as metro systems, light rail and trams, where power requirement is less. The first practical AC electric locomotive
9152-497: The southwestern parts of the country. Bremen's economy boomed in line with the West German Wirtschaftswunder of the 1950s and 60s. This saw the growth, and permanent settlement, of a large migrant worker population, drawn largely from Turkey and southern Europe. A new wave immigration occurred after the turn of new century, following the entry of Poland , Bulgaria and other former East Bloc countries into
9256-501: The surrounding Duchy of Bremen-Verden . George 1 Louis , the Elector of Hannover (and from 1714, King of Great Britain and Ireland ) who in 1715 acquired Bremen-Verden, recognized Bremen as a free city in 1720. The city was captured in 1806 and then annexed by France in 1810, before it regained independence in 1815. In 1871, Bremen was drawn by Prussia into the German Empire . With its new sea anchorage and wharves at Bremerhaven, it
9360-464: The trains. Some electric railways have their own dedicated generating stations and transmission lines but most purchase power from an electric utility . The railway usually provides its own distribution lines, switches and transformers . Electric locomotives usually cost 20% less than diesel locomotives, their maintenance costs are 25–35% lower, and cost up to 50% less to run. The earliest systems were DC systems. The first electric passenger train
9464-449: The use of these self-propelled vehicles is increasingly common for passenger trains , but rare for freight trains . Traditionally, locomotives pulled trains from the front. However, push-pull operation has become common, where the train may have a locomotive (or locomotives) at the front, at the rear, or at each end. Most recently railroads have begun adopting DPU or distributed power. The front may have one or two locomotives followed by
9568-429: The year 2014 has been the warmest year on record averaging 11.1 °C (52.0 °F), making Bremen the second-warmest German state after Berlin in 2014. While Bremen is located in the comparatively cloudy northwestern part of Germany, there has been a significant increase in average sunshine hours over the last decades, especially in the months of April, May, and July, causing the annual mean to rise by 121 hours between
9672-555: The year and can lead to heat waves in the summer and prolonged periods of frost in the winter. In general though, extremes are rare in Bremen and temperatures below −15 °C (5.0 °F) and above 35 °C (95.0 °F) occur only once every couple of years. The record high temperature was 37.6 °C (99.7 °F) on 9 August 1992, while the official record low temperature was −23.6 °C (−10.5 °F) on 13 February 1940. On 13 October 2018, Bremen recorded its warmest October day on record with 28.6 °C (83.4 °F). However,
9776-488: Was allowed to resume shipbuilding already in 1949. Production could soon be continued, starting with repair of ships and locomotives and the construction of fishing vessels . Soon later the shipbuilding programme was enlarged and various types of ships were offered to the market as container/multi purpose cargo ships, passenger liners , passenger-cargo vessels, roll-on/roll-off ships, LNG and LPG tankers , supply ships, special-purpose ships, reefer vessels and others. By
9880-662: Was demonstrated in Val-d'Or , Quebec . In 2007 the educational mini-hydrail in Kaohsiung , Taiwan went into service. The Railpower GG20B finally is another example of a fuel cell–electric locomotive. There are many different types of hybrid or dual-mode locomotives using two or more types of motive power. The most common hybrids are electro-diesel locomotives powered either from an electricity supply or else by an onboard diesel engine . These are used to provide continuous journeys along routes that are only partly electrified. Examples include
9984-467: Was designed by Charles Brown , then working for Oerlikon , Zürich. In 1891, Brown had demonstrated long-distance power transmission, using three-phase AC , between a hydro-electric plant at Lauffen am Neckar and Frankfurt am Main West, a distance of 280 km. Using experience he had gained while working for Jean Heilmann on steam–electric locomotive designs, Brown observed that three-phase motors had
10088-426: Was presented by Werner von Siemens at Berlin in 1879. The locomotive was driven by a 2.2 kW, series-wound motor, and the train, consisting of the locomotive and three cars, reached a speed of 13 km/h. During four months, the train carried 90,000 passengers on a 300-metre-long (984 feet) circular track. The electricity (150 V DC) was supplied through a third insulated rail between the tracks. A contact roller
10192-924: Was tested on the Edinburgh and Glasgow Railway in September of the following year, but the limited power from batteries prevented its general use. Another example was at the Kennecott Copper Mine , Latouche, Alaska , where in 1917 the underground haulage ways were widened to enable working by two battery locomotives of 4 + 1 ⁄ 2 tons. In 1928, Kennecott Copper ordered four 700-series electric locomotives with on-board batteries. These locomotives weighed 85 tons and operated on 750-volt overhead trolley wire with considerable further range whilst running on batteries. The locomotives provided several decades of service using Nickel–iron battery (Edison) technology. The batteries were replaced with lead-acid batteries , and
10296-582: Was the change of ship propulsion from steam engines to diesel engines . In cooperation and under licence from MAN the Bremer Vulkan started the production of diesel ship-engines. During World War II , 74 different Type VII U-boats were constructed for the Kriegsmarine . The Vulkan facility was several times target of the bombing of Bremen in World War II . The greatest bombing attack happened in March 1943 by
10400-633: Was the first in the world in regular service powered from an overhead line. Five years later, in the U.S. electric trolleys were pioneered in 1888 on the Richmond Union Passenger Railway , using equipment designed by Frank J. Sprague . The first electrically worked underground line was the City & South London Railway , prompted by a clause in its enabling act prohibiting use of steam power. It opened in 1890, using electric locomotives built by Mather & Platt . Electricity quickly became
10504-570: Was the location of nine subcamps of the Neuengamme concentration camp , mostly for French, Polish, Soviet and Jewish men and Jewish women. After the war, in which almost two thirds of the city's fabric was destroyed, the autonomy was restored. Bremen became one of the founding Bundesländer (or states) of the Federal Republic (West Germany) . Bremen lies on both sides of the River Weser , about 60 kilometres (37 miles) upstream of its estuary on
10608-530: Was the principal port of embarkation for German and central European emigrants to the Americas, and an entrepôt for Germany's late developing colonial trade. The Norddeutscher Lloyd (NDL), founded in Bremen in 1857, became one of the world's leading shipping companies. In the twentieth century, Bremen, a broadly liberal and social-democratic city, lost its autonomy under the Hitler regime . During World War II , it
10712-534: Was used on several railways in Northern Italy and became known as "the Italian system". Kandó was invited in 1905 to undertake the management of Società Italiana Westinghouse and led the development of several Italian electric locomotives. A battery–electric locomotive (or battery locomotive) is an electric locomotive powered by onboard batteries ; a kind of battery electric vehicle . Such locomotives are used where
10816-616: Was used to collect the electricity. The world's first electric tram line opened in Lichterfelde near Berlin, Germany, in 1881. It was built by Werner von Siemens (see Gross-Lichterfelde Tramway and Berlin Straßenbahn ). The Volk's Electric Railway opened in 1883 in Brighton, and is the oldest surviving electric railway. Also in 1883, Mödling and Hinterbrühl Tram opened near Vienna in Austria. It
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