56-707: The Rolls-Royce Condor aircraft piston engine is a larger version of the Rolls-Royce Eagle developing up to 675 horsepower (503 kilowatts). The engine first ran in 1918 and a total of 327 engines were recorded as being built. Note: In 1932 the Air Ministry initiated a conversion of the Condor petrol engine to the compression ignition system. The conversion was developed at the Royal Aircraft Establishment , Farnborough , with
112-558: A Handley Page O/100 bomber in December 1915, the first flight of a Rolls-Royce aero engine. The Eagle was developed further during 1916 and 1917, with power being progressively increased from 225 hp (168 kW) to 266 hp (198 kW), followed by 284 hp (212 kW), and then 322 hp (240 kW), and finally 360 hp (270 kW) by February 1918 by which time eight Eagle variants had been produced. Throughout World War I Rolls-Royce struggled to build Eagles in
168-439: A 1916 raid on the town. All Saints Church was designated as a cathedral in 1927, signalling that the town was ready for city status. Slum clearance in the 1920s and 1930s saw the central area of Derby become less heavily populated as families were rehoused on new council estates in the suburbs, where houses for private sale were also constructed. Rehousing, council house building and private housing developments continued on
224-587: A design and development centre and in the 1930s, on the direction of Lord Stamp , the LMS Scientific Research Laboratory was opened on London Road. In 1911, the Derby Wireless Club was formed by a group of local engineers and experimenters. It was to be the first radio or "wireless club" in the country. The early activities of the club, (even through World Wars), pushed the boundaries of 'wireless' technologies at
280-459: A government army coming to meet him south of Derby. He abandoned his invasion at Swarkestone Bridge on the River Trent , a few miles south of Derby. The prince, who on the march from Scotland had walked at the front of the column, made the return journey on horseback at the rear of the bedraggled and tired army. Shrovetide football was played at Derby every year, possibly from as early as
336-524: A large scale for some 30 years after the end of World War II in 1945. Production and repair work continued at the railway works. In December 1947 the Locomotive Works unveiled Britain's first mainline passenger diesel-electric locomotive – "Number 10000" . In 1958 production switched over to diesel locomotives completely. Meanwhile, the Carriage & Wagon Works were building the first of
392-422: Is built upon, with nearby areas linked if within 200 metres. It had a total population of 270,468 at the time of the 2011 census . An increase of over 10% since the 2001 census recorded population of 236,738; comprising population increases since 2001 along with new minor residential areas, and larger sub-divisions.The Derby built-up area is considered to be most of the city, as well as outlying villages within
448-487: Is home to engine manufacturer Rolls-Royce and Alstom (formerly Bombardier Transportation ) has a production facility at the Derby Litchurch Lane Works ; Toyota 's UK headquarters is located in the south-west of the city at Burnaston . The Roman camp of Derventio is considered to have been at Little Chester /Chester Green ( grid reference SK353375 ), the site of the old Roman fort. Later,
504-666: Is named after Derby, which was its original county town . As a unitary authority, Derby is administratively independent from Derbyshire County Council . The population of Derby is 263,490 (2022). The Romans established the town of Derventio , which was later captured by the Anglo-Saxons and then by the Vikings who made Djúra-bý one of the Five Boroughs of the Danelaw . Initially a market town , Derby grew rapidly in
560-581: Is represented by three MPs. Derby's emblem is the Derby Ram, about which there is a folk song titled " The Derby Ram ". It is found in a number of places, most notably serving as the nickname of Derby County F.C. The logo of the City Council's services is a stylised ram. Derby is in a relatively low-lying area along the lower valley of the River Derwent , where the south-east foothills of
616-730: The 25th anniversary of her ascension to the throne . The Queen presented the "charter scroll" or "letters patent" in person on 28 July 1977 on the steps of the Council House to the then Mayor Councillor Jeffrey Tillet (Conservative). Until then, Derby had been one of the few towns in England with a cathedral but not city status. Derby holds an important position in the history of the Labour movement as one of two seats (the other being Keir Hardie 's in Merthyr Tydfil ) gained by
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#1732798608856672-663: The Diesel Multiple Units that were to take over many of the services. In 1964 the British Rail Research Division opened to study all aspects of railway engineering from first principles. Its first success was in drastically improving the reliability and speed of goods trains, work which led to the development of the Advanced Passenger Train . Derby was awarded city status on 7 June 1977 by Queen Elizabeth II to mark
728-650: The Fabian Society . On his death in 1894, he left the society an amount in his will which was instrumental in founding the London School of Economics . The beginning of 19th century saw Derby emerging as an engineering centre, with manufacturers such as James Fox , who exported machine tools to Russia. In 1840, the North Midland Railway set up its works in Derby and when it merged with
784-617: The Midland Counties Railway and the Birmingham and Derby Junction Railway to form the Midland Railway , Derby became its headquarters. The connection with the railway encouraged others, notably Andrew Handyside , Charles Fox and his son Francis Fox . A permanent military presence was established in the city with the completion of Normanton Barracks in 1877. Derby was one of the boroughs reformed by
840-651: The Municipal Corporations Act 1835 , and it became a county borough with the Local Government Act 1888 . The borough expanded in 1877 to include Little Chester and Litchurch , and then in 1890 to include New Normanton and Rowditch. The borough did not increase substantially again until 1968, when under a recommendation of the Local Government Boundary Commission it was expanded into large parts of
896-804: The Pennines adjoin the lowlands and valley of the River Trent to the south. The city is bordered by four national character areas , the Trent Valley Washlands to the south, the Nottinghamshire, Derbyshire and Yorkshire Coalfields in the east, the South Derbyshire Claylands in the west, and the Derbyshire Peak Fringe in the north. Most of the flat plains surrounding Derby lie in the Trent Valley Washlands and South Derbyshire Claylands, while
952-653: The Royal Naval Air Service (RNAS) played a key role in the success of the engine by directing the car designer W.O. Bentley , who had enlisted in the Royal Navy , to place his expertise in the design of aluminium pistons at the service of Rolls-Royce. This gave significant weight saving to the Eagle and contributed to its excellent performance. On 3 January 1915 the Admiralty ordered twenty-five of
1008-720: The South Derbyshire district, at Boulton Moor / Thulston Fields , Stenson Fields , and the Mickleover Country Park residential development (The Pastures) within Burnaston parish. The urban area is bounded to the east by a narrow gap between Borrowash and Draycott (to the west of the Breaston urban area sub-division of the Nottingham BUA ). It is also close to other nearby urban areas to
1064-461: The districts of Amber Valley and Erewash which adjoin the city. This overall area is, by ONS' figures, the 29th largest in the UK . Because methods of measuring linked areas were redefined for the 2011 census, Breadsall , Duffield and Little Eaton were included. However, Quarndon is not considered to be a component as it is marginally too distant. It extends south to small adjoining estates in
1120-582: The transatlantic flight of Alcock and Brown in June 1919. At the outbreak of World War I in August 1914, the Royal Aircraft Factory asked Rolls-Royce to develop a new 200 hp (150 kW) air-cooled engine. Despite initial reluctance, they agreed, on condition that it be cooled by water rather than by air, which was the company's area of expertise. Development of the new 20 litre engine
1176-525: The 12th century. The town was split into the St Peter's and All Saints parishes, who fought to bring the ball from the Market Place to a goal within their own parishes. There were several attempts to ban the game, described in 1846 as "the barbarous and disgusting play of Foot-Ball, which for a great number of years has annually disgraced our town". In that year the military were brought in and after
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#17327986088561232-476: The 40/50. The engine was also run faster, and an epicyclic reduction gear was designed to keep the propeller speed below 1,100 rpm. To reduce inertia and improve performance the valvetrain design was changed from sidevalves to a SOHC design, closely following the original "side-slot" rocker arm design philosophy used on the contemporary German Mercedes D.I , Mercedes D.II and Mercedes D.III straight-six aviation powerplants. The engineering department of
1288-597: The 50-hour civil type test for compression ignition engines, being only the second British engine to do so. The only previous engine to pass this test was the much larger Beardmore Tornado fitted to the R101 airship . The diesel Condor was experimentally flown in a Hawker Horsley to explore the practical operation of a diesel engine in flight. The Condor was used in the following aircraft: Data from Lumsden Related development Comparable engines Related lists Rolls-Royce Eagle The Rolls-Royce Eagle
1344-511: The German radio-beam navigations systems (X-Verfahren and Knickebein , camouflage and decoy techniques (" Starfish sites ") were built, mainly south of the town, e.g. out in fields near Foremark . ) Derby has also become a significant cultural centre for the deaf community in Britain. Many deaf people move to Derby because of its strong sign language -using community. It is estimated that
1400-675: The Ministry of Munitions took over coordination of aircraft production in 1917, Sir William Weir declined to intervene in the company's commercial strategy, even though success of the engine owed much to the technology transfer directed by the RNAS. He preferred to support untested engines using cast aluminium components like the Siddeley Puma and the Sunbeam Arab , believing them to be better suited to mass production, in comparison to
1456-520: The Vikings and Anglo-Saxons would have co-existed, occupying two areas of land surrounded by water. The Anglo-Saxon Chronicle (c. 900) says that "Derby is divided by water". These areas of land were known as Norþworþig ("Northworthy"="north enclosure") and Deoraby , and were at the "Irongate" (north) side of Derby. During the Civil War of 1642–1646, Derby was garrisoned by Parliamentary troops commanded by Sir John Gell, 1st Baronet , who
1512-430: The co-operation of Rolls-Royce Ltd. Engine layout, bore, and stroke remained the same as for the petrol version; the compression ratio increased to 12.5:1. The more robust construction required to withstand the increased stresses increased the engine weight to 1,504 pounds (682 kg). At its maximum 2,000 rpm the engine developed 500 hp (373 kW), giving a power/weight ratio of 0.33 hp/lb. The engine passed
1568-903: The deaf population in Derby is at least three times higher than the national average, and that only London has a larger deaf population. The Royal School for the Deaf on Ashbourne Road provides education in British Sign Language and English. By traditional definitions, Derby is the county town of Derbyshire ; the county's quarter sessions were held at Derby and knights of the shire were elected there, with County Hall on St Mary's Gate being built in 1660 to host such courts and meetings. When elected county councils were established in 1889, Derbyshire County Council initially used County Hall as its meeting place, but moved to Smedley's Hydro in Matlock in 1955. Between 1889 and 1974 Derby
1624-1116: The driest month. This location is classified as Cfb according to the Köppen climate classification . Under the Köppen climatic classification Derby has an oceanic climate along with the rest of the British Isles. The average annual temperature is 9.7 °C. Precipitation averages 694 mm. The highest temperature ever recorded in Derby was 34.1 °C (93.4 °F), recorded at Markeaton Park on 3 August 1990, Derby's two biggest employers, Rolls-Royce Holdings and Toyota , are engaged in engineering manufacturing. Other companies of note include railway systems engineering firm Alstom , who manufacture railway rolling stock at Derby Litchurch Lane Works ; First Source, who deal with much of Sky's telephone support; and Triton Equity, who took over Alstom's manufacturing plant for large power plant boilers and heat exchangers in 2014. Derby power station on Silkmill Lane supplied electricity to
1680-648: The hillier, northern parts of the city lie within the Derbyshire Peak Fringe and the Coalfields. The city is around 16 miles (26 km) from Coton in the Elms , the farthest place from coastal waters in the United Kingdom . The Derby Built-up Area (BUA) or Derby Urban Area is an area including Derby and adjoining built-up districts of Derbyshire, including Borrowash and Duffield . The Office for National Statistics defines an urban area as one which
1736-567: The industrial era and was home to Lombe's Mill , an early British factory and it contains the southern part of the Derwent Valley Mills World Heritage Site. With the arrival of the railways in the 19th century, Derby became a centre of the British rail industry . Despite having a cathedral since 1927, Derby did not gain city status until 1977. Derby is a centre for advanced transport manufacturing. It
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1792-572: The intricate machining required to build the Eagle and its smaller cousin the Falcon . After the War, a Mark IX version of the Eagle was developed for civilian use. Production continued until 1928, and in total 4,681 Eagle engines were built. Time between overhaul (TBO) for later Eagles was around 100–180 hours. Note: Examples of the Rolls-Royce Eagle are on display at the: One of
1848-503: The letter "v" as "b", becoming Derbentio , and later Derby, along with a link to the river Derwent – from the Celtic meaning "valley thick with oaks" – which flows through the city, triggering a shortened version of Derwent by , meaning 'Derwent settlement'. The town name appears as Darbye on early maps, such as that of John Speed , 1610. Modern research (2004) into the history and archaeology of Derby has provided evidence that
1904-507: The new engines. The Eagle first ran on a test bed at Rolls-Royce's Derby works in February 1915, producing 225 hp (168 kW) at 1,600 rpm. This was quickly increased to 1,800, then in August 1915 to 2,000 rpm where it produced 300 hp (220 kW). After further testing, it was decided to approve the engine for production at 1,800 rpm and 225 hp (168 kW); 1,900 rpm was allowed for short periods. The engine first flew on
1960-403: The north. Notes: Derby has a green belt area defined to the north and east of the city, first drawn up in the 1950s, to prevent convergence with the surrounding towns and villages. It extends for several miles into the counties of Derbyshire and Nottinghamshire, covering much of the area up to Nottingham. Derby's climate is classified as warm and temperate. There is precipitation even during
2016-634: The painter Joseph Wright , known as Wright of Derby, who was known for his innovative use of light in his paintings and was an associate of the Royal Academy ; and John Whitehurst , a clockmaker and philosopher. Erasmus Darwin , doctor, scientist, philosopher and grandfather of Charles Darwin , moved to Derby in 1782 and founded the Derby Philosophical Society . Derby's place in the country's philosophical and political life continued with Henry Hutchinson, an active member of
2072-511: The police cut the first ball to pieces, another ball was produced and the town's Mayor was "stuck on the shoulder by a brick-bat, hurled by some ferocious ruffian, and severely bruised". The Derby Football was banned in 1846, although it was played once more in 1870. Derby and Derbyshire were among the centres of Britain's Industrial Revolution . In 1717, Derby was the site of the first water-powered silk mill in Britain, built by John Lombe and George Sorocold , after Lombe had reputedly stolen
2128-522: The quantities required by the War Office , but the company resisted pressure to license other manufacturers to produce it. The fears of Rolls-Royce that the engine's much admired quality would be compromised by other manufacturers is often given as an explanation for this resistance, but the commercial terms sought by Rolls-Royce for licence production were so restrictive that other manufacturers - apart from Brazil Straker - refused to accept them. When
2184-591: The recently formed Labour Representation Committee at the 1900 general election. The MP was Richard Bell , General Secretary of the Railway Servants Union . Bell was succeeded in 1910 by Jimmy Thomas and he in turn by the distinguished polymath and Nobel Laureate Philip Noel-Baker in 1936. Despite its strategic industries (rail and aero-engine ), Derby suffered comparatively little damage in both world wars (contrast Bristol and Filton ). This may in part have been because of jamming against
2240-480: The reigning House of Hanover . Stuart called at The George Inn on Irongate (where the Duke of Devonshire had set up his headquarters in late November after raising The Derbyshire Blues ) and demanded billets for the 9,000 troops under his command. The prince stayed at Exeter House on Full Street, where he held a council of war on 5 December which decided to retreat. Stuart had received misleading information about
2296-471: The rural district of Belper , Repton and South East Derbyshire . This vastly increased Derby's population from 132,408 in the 1961 census to 219,578 in the 1971 census. Despite being one of the areas of Britain furthest from the sea , Derby holds a special place in the history of marine safety – it was as MP for Derby that Samuel Plimsoll introduced his bills for a " Plimsoll line " (and other marine safety measures). This failed on first introduction, but
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2352-897: The secrets of silk-throwing from Piedmont in Italy (he is alleged to have been poisoned by the Piedmontese as revenge in 1722). In 1759, Jedediah Strutt patented and built a machine called the Derby Rib Attachment that revolutionised the manufacture of hose. This attachment was used on the Rev. Lee's Framework Knitting Machine; it was placed in front of – and worked in unison with – Lee's Frame, to produce ribbed hose (stockings). The partners were Jedediah Strutt, William Woollatt (who had been joined in 1758 by John Bloodworth and Thomas Stafford, all leading hosiers in Derby). The patent
2408-429: The time in England, and promoted it into becoming a hobby for many local folk. {Over later years, as radio technology progressed, the club transitioned to become the Derby & District Amateur Radio Society (DADARS), continuing to host meetings and events for radio hobbyists with all the new technologies, into the early 2020s.} In World War I, Derby was targeted by German Zeppelin air bombers, who killed five people in
2464-460: The town and the surrounding area from 1893 until its closure in 1969. From 1922 Sinfin Lane was the home of the 62-acre (250,000 m ) site of International Combustion , originally manufacturers of machinery for the automatic delivery of pulverised fuel to furnaces and boilers , and later producing steam-generating boilers for use in electrical generating plant such as used in power stations. In
2520-671: The town was one of the " Five Boroughs " (fortified towns) of the Danelaw , until it was captured by Lady Æthelflæd of Mercia in July 917, after which the town was annexed to the Kingdom of Mercia. The Viking name Djúra-bý , recorded in Old English as Deoraby , means "village of the deer". However, the origin of the name Derby has had multiple influences: a variation of the original Roman name Derventio with pronunciation of
2576-523: The two Eagles that powered Alcock and Brown's historic transatlantic flight is on display at the Museum Of Making, Derby . Data from Lumsden Related development Comparable engines Related lists Derby Derby ( / ˈ d ɑːr b i / DAR -bee ) is a city and unitary authority area on the River Derwent in Derbyshire , England. Derbyshire
2632-400: Was a county borough , independent from the county council. It then became a lower-tier district council with the county council providing county-level services between 1974 and 1997. On 1 April 1997, Derby City Council became a unitary authority , regaining its independence from the county council. On 7 July 2014, Derby's first ever Youth Mayor, Belal Butt (a student from Chellaston Academy),
2688-420: Was appointed Governor of Derby in 1643. These troops took part in the defence of nearby Nottingham , the siege of Lichfield , the battle of Hopton Heath and many other engagements in Nottinghamshire , Staffordshire and Cheshire , as well as successfully defending Derbyshire against Royalist armies. The first civic system of piped water in England was established in Derby in 1692, using wooden pipes, which
2744-486: Was common for several centuries. The Derby Waterworks included waterwheel-powered pumps for raising water out of the River Derwent and storage tanks for distribution. This was designed and built by local engineer George Sorocold . During the Jacobite rising of 1745 , Jacobite Army troops led by Prince Charles Edward Stuart arrived in Derby on 4 December 1745, whilst on their way to London to attempt to overthrow
2800-470: Was destroyed by fire on 12 January 1803 and then rebuilt, starting work again at the end of 1804; West Mill, 1792, commenced working 1796; Reeling Mill, 1897; Round Mill, which took 10 years to build, from 1803 to 1813, and commenced working in 1816; and Milford Mills, 1778. The Belper and Milford mills were not built in partnership with Arkwright; they were all owned and financed by Strutt. Other notable 18th-century figures with connections to Derby include
2856-567: Was driven by horses. In 1771 Richard Arkwright, Samuel Need and Jedediah Strutt built the world's first commercially successful water-powered cotton spinning mill at Cromford , Derbyshire, developing a form of power that was to be a catalyst for the Industrial Revolution. This was followed in Derbyshire by Jedediah Strutt's cotton spinning mills at Belper . They were: South Mill, the first, 1775; North Mill, 1784, which
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#17327986088562912-476: Was elected by the Mayor of Derby . Derby was a single United Kingdom Parliamentary constituency represented by two members of parliament until 1950, when it was divided into the single-member constituencies of Derby North and Derby South . However, in 2010, the wards of Allestree, Oakwood and Spondon were moved to the new constituency of Mid Derbyshire , created for the 2010 general election. As of 2020, Derby
2968-442: Was led by Henry Royce from his home in Kent . Based initially on the 7.4 litre 40/50 Rolls-Royce Silver Ghost engine, and drawing also on the design of a 7.2 litre Daimler DF80 aero engine used in a 1913 Grand Prix Mercedes that had been acquired, the power was increased by doubling the number of cylinders to twelve and increasing their stroke to 6.5 inches (170 mm), although their bore remained at 4.5 inches (110 mm) of
3024-491: Was obtained in January 1759. After three years, Bloodworth and Stafford were paid off, and Samuel Need – a hosier of Nottingham – joined the partnership. The firm was known as Need, Strutt and Woollatt. The patent expired in 1773 though the partnership continued until 1781 when Need died. Messrs Wright, the bankers of Nottingham, recommended that Richard Arkwright apply to Strutt and Need for finance for his cotton spinning mill. The first mill opened in Nottingham in 1770 and
3080-425: Was successful in 1876 and contributed to Plimsoll's re-election as an MP. An industrial boom began in Derby when Rolls-Royce opened a car and aircraft factory in the town in 1907. In 1923, the Midland Railway became part of the London, Midland & Scottish Railway with headquarters in London. However, Derby remained a major rail manufacturing centre, second only to Crewe and Wolverton . Moreover, it remained
3136-403: Was the first aircraft engine to be developed by Rolls-Royce Limited . Introduced in 1915 to meet British military requirements during World War I , it was used to power the Handley Page Type O bombers and a number of other military aircraft. The Eagle was the first engine to make a non-stop trans-Atlantic crossing by aeroplane when two Eagles powered the converted Vickers Vimy bomber on
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