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132-610: The Institution was founded at the Queen's Hotel, Birmingham , by George Stephenson in 1847. It received a Royal Charter in 1930. The Institution's headquarters, purpose-built for the Institution in 1899, is situated at No. 1 Birdcage Walk in central London. Informal meetings are said to have taken place in 1846, at locomotive designer Charles Beyer 's house in Cecil Street, Manchester , or alternatively at Bromsgrove at

264-522: A Eurostat measure of the functional city-region approximated to local government districts, had a population of 2,357,100 in 2004. In addition to Birmingham itself, the LUZ ( West Midlands conurbation ) includes the Metropolitan Boroughs of Dudley , Sandwell , Solihull and Walsall , along with the districts of Lichfield , Tamworth , North Warwickshire and Bromsgrove . Beyond this is

396-476: A Lord Mayoralty was conferred on Birmingham by Letters Patent on 3 June 1896. Birmingham's ten parliamentary constituencies are represented in the House of Commons as of 2024 by one Conservative , one independent and eight Labour MPs . Originally part of Warwickshire , Birmingham expanded in the late 19th and early 20th centuries, absorbing parts of Worcestershire to the south and Staffordshire to

528-560: A conurbation with the borough of Solihull to the south east, and with the city of Wolverhampton and the industrial towns of the Black Country to the north west, which form the West Midlands Built-up Area covering 59,972 ha (600 km ; 232 sq mi). Surrounding this is Birmingham's metropolitan area – the area to which it is closely economically tied through commuting – which includes

660-399: A convergent-divergent nozzle is needed on high-speed aircraft. The engine thrust is highest if the static pressure of the gas reaches the ambient value as it leaves the nozzle. This only happens if the nozzle exit area is the correct value for the nozzle pressure ratio (npr). Since the npr changes with engine thrust setting and flight speed this is seldom the case. Also at supersonic speeds

792-680: A rotating air compressor powered by a turbine , with the leftover power providing thrust through the propelling nozzle —this process is known as the Brayton thermodynamic cycle . Jet aircraft use such engines for long-distance travel. Early jet aircraft used turbojet engines that were relatively inefficient for subsonic flight. Most modern subsonic jet aircraft use more complex high-bypass turbofan engines . They give higher speed and greater fuel efficiency than piston and propeller aeroengines over long distances. A few air-breathing engines made for high-speed applications (ramjets and scramjets ) use

924-410: A Section 114 notice to say that it could not meet its financial commitments. Effectively this meant the council was bankrupt. A major contributing factor is a £1.1b sum that has been paid out since 2010, for equal pay claims. There is still a bill for £760m, increasing by £14m a month. There are also problems with a new IT system that was projected to cost £19m but is now closer to £100m. In addition there

1056-503: A broader range of specialist, higher-skilled and more lucrative activities. By the time of the English Civil War Birmingham's booming economy, its expanding population, and its resulting high levels of social mobility and cultural pluralism , had seen it develop new social structures very different from those of more established areas. Relationships were built around pragmatic commercial linkages rather than

1188-578: A century of the charter Birmingham had grown into a prosperous urban centre of merchants and craftsmen. By 1327 it was the third-largest town in Warwickshire, a position it would retain for the next 200 years. The principal governing institutions of medieval Birmingham – including the Guild of the Holy Cross and the lordship of the de Birmingham family – collapsed between 1536 and 1547, leaving

1320-516: A committee appointed with McDonnell at its head to see the idea to its inauguration. The Institution of Mechanical Engineers was then founded on 27 January 1847, in the Queen's Hotel next to Curzon Street station in Birmingham by the railway pioneer George Stephenson and others. McConnnell became the first chairman. The founding of the Institution was said by Stephenson's biographer Samuel Smiles to have been spurred by outrage that Stephenson,

1452-408: A compressor ( axial , centrifugal , or both), mixing fuel with the compressed air, burning the mixture in the combustor , and then passing the hot, high pressure air through a turbine and a nozzle . The compressor is powered by the turbine, which extracts energy from the expanding gas passing through it. The engine converts internal energy in the fuel to increased momentum of the gas flowing through

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1584-534: A considerable urban heat island effect. During the coldest night recorded, 14 January 1982, the temperature fell to −20.8 °C (−5.4 °F) at Birmingham Airport, but just −14.3 °C (6.3 °F) at Edgbaston, near the city centre. Birmingham is a snowy city relative to other large UK conurbations, due to its inland location and comparatively high elevation. Between 1961 and 1990 Birmingham Airport averaged 13.0 days of snow lying annually, compared to 5.33 at London Heathrow . Snow showers often pass through

1716-515: A constantly diversifying range of products, in a highly entrepreneurial economy of small, often self-owned workshops. This led to exceptional levels of inventiveness: between 1760 and 1850 – the core years of the Industrial Revolution – Birmingham residents registered over three times as many patents as those of any other British town or city. The demand for capital to feed rapid economic expansion also saw Birmingham grow into

1848-449: A fast-moving jet of heated gas (usually air) that generates thrust by jet propulsion . While this broad definition may include rocket , water jet , and hybrid propulsion, the term jet engine typically refers to an internal combustion air-breathing jet engine such as a turbojet , turbofan , ramjet , pulse jet , or scramjet . In general, jet engines are internal combustion engines . Air-breathing jet engines typically feature

1980-591: A haven for Nonconformists from the 1660s. By 1700 Birmingham's population had increased fifteen-fold and the town was the fifth-largest in England and Wales. The 18th century saw this tradition of free-thinking and collaboration blossom into the cultural phenomenon now known as the Midlands Enlightenment . The town developed into a notable centre of literary , musical , artistic and theatrical activity; and its leading citizens – particularly

2112-427: A higher priority than fuel efficiency, fans tend to be smaller or absent. Because of these distinctions, turbofan engine designs are often categorized as low-bypass or high-bypass , depending upon the amount of air which bypasses the core of the engine. Low-bypass turbofans have a bypass ratio of around 2:1 or less. The term Advanced technology engine refers to the modern generation of jet engines. The principle

2244-406: A jet of water. The mechanical arrangement may be a ducted propeller with nozzle, or a centrifugal compressor and nozzle. The pump-jet must be driven by a separate engine such as a Diesel or gas turbine . All jet engines are reaction engines that generate thrust by emitting a jet of fluid rearwards at relatively high speed. The forces on the inside of the engine needed to create this jet give

2376-426: A large number of different types of jet engines, all of which achieve forward thrust from the principle of jet propulsion . Commonly aircraft are propelled by airbreathing jet engines. Most airbreathing jet engines that are in use are turbofan jet engines, which give good efficiency at speeds just below the speed of sound. A turbojet engine is a gas turbine engine that works by compressing air with an inlet and

2508-624: A major financial centre with extensive international connections. Lloyds Bank was founded in the town in 1765, and Ketley's Building Society , the world's first building society , in 1775. By 1800 the West Midlands had more banking offices per head than any other region in Britain, including London. Innovation in 18th-century Birmingham often took the form of incremental series of small-scale improvements to existing products or processes, but also included major developments that lay at

2640-435: A particular engine design that if some bumps in a bypass duct are smoothed out the air will flow more smoothly giving a pressure loss reduction of x% and y% less fuel will be needed to get the take-off thrust, for example. This understanding comes under the engineering discipline Jet engine performance . How efficiency is affected by forward speed and by supplying energy to aircraft systems is mentioned later. The efficiency of

2772-704: A powerplant for the world's first jet- fighter aircraft , the Messerschmitt Me 262 (and later the world's first jet- bomber aircraft, the Arado Ar 234 ). A variety of reasons conspired to delay the engine's availability, causing the fighter to arrive too late to improve Germany's position in World War II , however this was the first jet engine to be used in service. Meanwhile, in Britain the Gloster E28/39 had its maiden flight on 15 May 1941 and

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2904-530: A record-breaking nationwide tornado outbreak , two tornadoes touched down within the Birmingham city limits – in Erdington and Selly Oak – with six tornadoes touching down within the boundaries of the wider West Midlands county. More recently, a destructive T6/F3 tornado occurred in July 2005 in the south of the city, damaging homes and businesses in the area. The tornado took an almost parallel path to that of

3036-505: A shared ancestor, or a mythical tribal figurehead. Place names ending in -ingahām are characteristic of primary settlements established during the early phases of Anglo-Saxon colonisation of an area, suggesting that Birmingham was probably in existence by the early 7th century at the latest. Surrounding settlements with names ending in -tūn ('farm'), -lēah ('woodland clearing'), -worð ('enclosure') and -field ('open ground') are likely to be secondary settlements created by

3168-492: A single black box later described by an official American historian as "the most valuable cargo ever brought to our shores". The city was extensively redeveloped during the 1950s and 1960s. This included the construction of large tower block estates, such as Castle Vale . The Bull Ring was reconstructed and New Street station was redeveloped. In the decades following World War II, the ethnic makeup of Birmingham changed significantly, as it received waves of immigration from

3300-530: A strong thrust on the engine which pushes the craft forwards. Jet engines make their jet from propellant stored in tanks that are attached to the engine (as in a 'rocket') as well as in duct engines (those commonly used on aircraft) by ingesting an external fluid (very typically air) and expelling it at higher speed. A propelling nozzle produces a high velocity exhaust jet . Propelling nozzles turn internal and pressure energy into high velocity kinetic energy. The total pressure and temperature don't change through

3432-439: A substantial initial forward airspeed before it can function. Ramjets are considered the simplest type of air breathing jet engine because they have no moving parts in the engine proper, only in the accessories. Scramjets differ mainly in the fact that the air does not slow to subsonic speeds. Rather, they use supersonic combustion. They are efficient at even higher speed. Very few have been built or flown. The rocket engine uses

3564-421: A supersonic afterburning engine or 2200 K with afterburner lit. The pressure entering the nozzle may vary from 1.5 times the pressure outside the nozzle, for a single stage fan, to 30 times for the fastest manned aircraft at Mach 3+. Convergent nozzles are only able to accelerate the gas up to local sonic (Mach 1) conditions. To reach high flight speeds, even greater exhaust velocities are required, and so

3696-402: A test stand, sucks in fuel and generates thrust. How well it does this is judged by how much fuel it uses and what force is required to restrain it. This is a measure of its efficiency. If something deteriorates inside the engine (known as performance deterioration ) it will be less efficient and this will show when the fuel produces less thrust. If a change is made to an internal part which allows

3828-549: A tourist attraction in the early 1900s. Birmingham has a temperate maritime climate ( Cfb according to the Köppen climate classification ), like much of the British Isles, with average maximum temperatures in summer (July) being around 21.3 °C (70.3 °F); and in winter (January) around 6.7 °C (44.1 °F). Between 1971 and 2000 the warmest day of the year on average was 28.8 °C (83.8 °F) and

3960-461: A two-stage axial compressor feeding a single-sided centrifugal compressor . Practical axial compressors were made possible by ideas from A.A.Griffith in a seminal paper in 1926 ("An Aerodynamic Theory of Turbine Design"). Whittle would later concentrate on the simpler centrifugal compressor only. Whittle was unable to interest the government in his invention, and development continued at a slow pace. In Spain, pilot and engineer Virgilio Leret Ruiz

4092-541: Is a city and metropolitan borough in the metropolitan county of West Midlands in England . It is the second-largest city in Britain – commonly referred to as the second city of the United Kingdom – with a population of 1.145 million in the city proper . Birmingham borders the Black Country to its west and, together with the city of Wolverhampton and towns including Dudley and Solihull , forms

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4224-461: Is a major international commercial centre and an important transport, retail, events and conference hub. Its metropolitan economy is the second-largest in the United Kingdom with a GDP of $ 121.1bn (2014 ). Its five universities, including the University of Birmingham , make it the largest centre of higher education in the country outside London. Birmingham's major cultural institutions –

4356-581: Is a projected £87m deficit for the financial year 23/24. Birmingham City Council has 101 councillors representing 77 wards as of 2018. Its headquarters are at the Council House in Victoria Square . As of 2023 , the council has a Labour Party majority and is led by John Cotton. Labour replaced the previous no overall control status at the May 2012 elections. The honour and dignity of

4488-544: Is an award for excellence in engineering established in 1937 by the Institution of Mechanical Engineers. It is named after Scottish engineer James Watt (1736-1819) who developed the Watt steam engine in 1781, which was fundamental to the changes brought by the Industrial Revolution in both his native Great Britain and the rest of the world. The Whitworth Scholarship is awarded to a few promising engineers of

4620-507: Is documented in the story of Ottoman soldier Lagâri Hasan Çelebi , who reportedly achieved flight using a cone-shaped rocket in 1633. The earliest attempts at airbreathing jet engines were hybrid designs in which an external power source first compressed air, which was then mixed with fuel and burned for jet thrust. The Italian Caproni Campini N.1 , and the Japanese Tsu-11 engine intended to power Ohka kamikaze planes towards

4752-730: Is located in the centre of the West Midlands region of England on the Birmingham Plateau – an area of relatively high ground, ranging between 500 and 1,000 feet (150 and 300 metres) above sea level and crossed by Britain's main north–south watershed between the basins of the Rivers Severn and Trent . To the immediate south west of the city lie the Lickey Hills , Clent Hills and Walton Hill , which reach 1,033 feet (315 m) and have extensive views over

4884-507: Is particularly a large community of Asian descent, especially from Pakistani, Indian and Bangladeshi backgrounds, as well as Afro-Caribbeans from the Commonwealth , and a solid Chinese presence through migrants from the former colony of Hong Kong . Birmingham also has an older Irish connection, with the city having the largest population of Irish in mainland Britain and home to its only Irish quarter, Digbeth . In Birmingham, 65.9% of

5016-443: Is that a turbine engine will function more efficiently if the various sets of turbines can revolve at their individual optimum speeds, instead of at the same speed. The true advanced technology engine has a triple spool, meaning that instead of having a single drive shaft, there are three, in order that the three sets of blades may revolve at different speeds. An interim state is a twin-spool engine, allowing only two different speeds for

5148-400: Is the propellant flow in kg/s, A e {\displaystyle A_{e}} is the cross-sectional area at the exit of the exhaust nozzle, and p {\displaystyle p} is the atmospheric pressure. Combined-cycle engines simultaneously use two or more different principles of jet propulsion. A water jet, or pump-jet, is a marine propulsion system that uses

5280-570: Is used for launching satellites, space exploration and crewed access, and permitted landing on the Moon in 1969. Rocket engines are used for high altitude flights, or anywhere where very high accelerations are needed since rocket engines themselves have a very high thrust-to-weight ratio . However, the high exhaust speed and the heavier, oxidizer-rich propellant results in far more propellant use than turbofans. Even so, at extremely high speeds they become energy-efficient. An approximate equation for

5412-800: The Anglican Diocese of Birmingham was created in 1905. There are two other cathedrals: St Chad's , seat of the Roman Catholic Archdiocese of Birmingham and the Greek Orthodox Cathedral of the Dormition of the Mother of God and St Andrew . The Coptic Orthodox Diocese of the Midlands is also based at Birmingham, with a cathedral under construction. The original parish church of Birmingham, St Martin in

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5544-687: The Birmingham Political Union bringing the country to the brink of civil war during the Days of May that preceded the passing of the Great Reform Act in 1832. The Union's meetings on Newhall Hill in 1831 and 1832 were the largest political assemblies Britain had ever seen. Lord Durham , who drafted the Act, wrote that "the country owed Reform to Birmingham, and its salvation from revolution". This reputation for having "shaken

5676-473: The City of Birmingham Symphony Orchestra , Birmingham Royal Ballet , Birmingham Repertory Theatre , Library of Birmingham and Barber Institute of Fine Arts – enjoy international reputations, and the city has vibrant and influential grassroots art , music , literary and culinary scenes. Birmingham was the host city for the 2022 Commonwealth Games . In 2021, Birmingham was the third most visited city in

5808-521: The Commonwealth of Nations and beyond. The city's population peaked in 1951 at 1,113,000 residents. 21 people were killed and 182 were injured in a series of bomb attacks in 1974, thought to be carried out by the Provisional IRA . The bombings were the worst terror attacks in England up until the 2005 London bombings and consisted of bombs being planted in two pubs in central Birmingham. Six men were convicted , who became known later as

5940-644: The Frisch–Peierls memorandum of 1940, the same year that the cavity magnetron , the key component of radar and later of microwave ovens , was invented by John Randall and Henry Boot . Details of these two discoveries, together with an outline of the first jet engine invented by Frank Whittle in nearby Rugby , were taken to the United States by the Tizard Mission in September 1940, in

6072-903: The Gloster Meteor finally entered service with the RAF in July 1944. These were powered by turbojet engines from Power Jets Ltd., set up by Frank Whittle. The first two operational turbojet aircraft, the Messerschmitt Me 262 and then the Gloster Meteor entered service within three months of each other in 1944; the Me 262 in April and the Gloster Meteor in July. The Meteor only saw around 15 aircraft enter World War II action, while up to 1400 Me 262 were produced, with 300 entering combat, delivering

6204-549: The Soho Manufactory , pioneering the combination and mechanisation under one roof of previously separate manufacturing activities through a system known as "rational manufacture". As the largest manufacturing unit in Europe, this came to symbolise the emergence of the factory system . Most significant, however, was the development in 1776 of the industrial steam engine by James Watt and Matthew Boulton. Freeing for

6336-536: The Victorian era , the population of Birmingham grew rapidly to well over half a million and Birmingham became the second largest population centre in England. Birmingham was granted city status in 1889 by Queen Victoria . Joseph Chamberlain , mayor of Birmingham and later an MP, and his son Neville Chamberlain , who was Lord Mayor of Birmingham and later the British Prime Minister, are two of

6468-460: The West Midlands conurbation . The royal town of Sutton Coldfield is incorporated within the city limits to the northeast. The wider metropolitan area has a population of 4.3 million, making it the largest outside London. Located in the West Midlands region of England, Birmingham is considered to be the social, cultural, financial and commercial centre of the Midlands . It is just west of

6600-500: The aeolipile , a device described by Hero of Alexandria in 1st-century Egypt . This device directed steam power through two nozzles to cause a sphere to spin rapidly on its axis. It was seen as a curiosity. Meanwhile, practical applications of the turbine can be seen in the water wheel and the windmill . Historians have further traced the theoretical origin of the principles of jet engines to traditional Chinese firework and rocket propulsion systems. Such devices' use for flight

6732-664: The gasoline -fuelled HeS 3 of 5 kN (1,100 lbf), which was fitted to Heinkel's simple and compact He 178 airframe and flown by Erich Warsitz in the early morning of August 27, 1939, from Rostock -Marienehe aerodrome , an impressively short time for development. The He 178 was the world's first jet plane. Heinkel applied for a US patent covering the Aircraft Power Plant by Hans Joachim Pabst von Ohain on May 31, 1939; patent number US2256198, with M Hahn referenced as inventor. Von Ohain's design, an axial-flow engine, as opposed to Whittle's centrifugal flow engine,

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6864-402: The ram effect of the vehicle's speed instead of a mechanical compressor. The thrust of a typical jetliner engine went from 5,000 lbf (22 kN) ( de Havilland Ghost turbojet) in the 1950s to 115,000 lbf (510 kN) ( General Electric GE90 turbofan) in the 1990s, and their reliability went from 40 in-flight shutdowns per 100,000 engine flight hours to less than 1 per 100,000 in

6996-517: The 112-mile (180 km) London and Birmingham Railway of 1838. Birmingham schoolteacher Rowland Hill invented the postage stamp and created the first modern universal postal system in 1839. Alexander Parkes invented the first human-made plastic in the Jewellery Quarter in 1855. By the 1820s, the country's extensive canal system had been constructed, giving greater access to natural resources and fuel for industries. During

7128-454: The 1931 tornado. Notable tornadoes have also struck the city in 1923, 1946, 1951, 1998 and 1999, most of which being of T2-T4/F1-F2 intensity. There are 571 parks within Birmingham – more than any other European city – totalling over 3,500 hectares (14 sq mi) of public open space. The city has over six million trees, and 250 miles (400 kilometres) of urban brooks and streams. Sutton Park , which covers 2,400 acres (971 ha) in

7260-537: The 1950s, the jet engine was almost universal in combat aircraft, with the exception of cargo, liaison and other specialty types. By this point, some of the British designs were already cleared for civilian use, and had appeared on early models like the de Havilland Comet and Avro Canada Jetliner . By the 1960s, all large civilian aircraft were also jet powered, leaving the piston engine in low-cost niche roles such as cargo flights. The efficiency of turbojet engines

7392-403: The 2001, 2011, and 2021 censuses, the proportion of Christians in Birmingham decreased from 59.1% to 46.1% to 34%, while the proportion of Muslims increased from 14.3% to 21.8% to 29.9% and the proportion of people with no religious affiliation increased from 12.4% to 19.3% to 24.1%. All other religions remained proportionately similar. St Philip's Cathedral was upgraded from church status when

7524-547: The Birmingham Six and sentenced to life imprisonment, who were acquitted after 16 years by the Court of Appeal . The convictions are now considered one of the worst British miscarriages of justice in recent times. The true perpetrators of the attacks are yet to be arrested. Birmingham remained by far Britain's most prosperous provincial city as late as the 1970s, with household incomes exceeding even those of London and

7656-476: The Borough was divided into 13 wards. William Scholefield became the first Mayor and William Redfern was appointed as Town Clerk. Birmingham Town Police were established the following year. Birmingham's tradition of innovation continued into the 19th century. Birmingham was the terminus for both of the world's first two long-distance railway lines: the 82-mile (132 km) Grand Junction Railway of 1837 and

7788-521: The British embassy in Madrid a few years later by his wife, Carlota O'Neill , upon her release from prison. In 1935, Hans von Ohain started work on a similar design to Whittle's in Germany, both compressor and turbine being radial, on opposite sides of the same disc, initially unaware of Whittle's work. Von Ohain's first device was strictly experimental and could run only under external power, but he

7920-673: The Bull Ring , is Grade II* listed . A short distance from Five Ways the Birmingham Oratory was completed in 1910 on the site of Cardinal Newman 's original foundation. There are several Christadelphian meeting halls in the city and the Christadelphian Magazine and Publishing Group has its headquarters in Hall Green . Jet engine A jet engine is a type of reaction engine , discharging

8052-456: The Institution also runs The Manufacturer MX Awards, and Formula Student , the world's largest student motorsport event. The Tribology Gold Medal is awarded each year for outstanding and supreme achievement in the field of tribology . It is funded from The Tribology Trust Fund. It was established and first awarded in 1972. As of 2017, it has been awarded to 39 individuals from 12 different countries. As of 2020, there have been 135 presidents of

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8184-530: The Institution rented premises at No. 10 Victoria Chambers, where it remained for 20 years. In 1895 the Institution bought a plot of land at Storey's Gate, on the eastern end of Birdcage Walk , for £9,500. Architect Basil Slade looked to the newly-completed Admiralty buildings facing the site for inspiration. The building was designed in the Queen Anne, 'streaky bacon', style in red brick and Portland stone . Inside, there were several features that were state of

8316-414: The Institution, who since 1922 have been elected annually for one year. The first president was George Stephenson , followed by his son Robert . Prior to 2018, Joseph Whitworth , John Penn and William Armstrong were the only presidents to have served two terms. Pamela Liversidge in 1997 became the first female president; Professor Isobel Pollock became the second in 2012 and Carolyn Griffiths became

8448-534: The Pratt & Whitney J57 and J75 models. There is also a derivative of the P&;W JT8D low-bypass turbofan that creates up to 35,000 horsepower (HP) . Jet engines are also sometimes developed into, or share certain components such as engine cores, with turboshaft and turboprop engines, which are forms of gas turbine engines that are typically used to power helicopters and some propeller-driven aircraft. There are

8580-564: The Rivers Tame, Rea and Cole and their tributaries. To the north and west of the fault, between 150 and 600 feet (46 and 183 metres) higher than the surrounding area and underlying much of the city centre, lies a long ridge of harder Keuper Sandstone . The bedrock underlying Birmingham was mostly laid down during the Permian and Triassic periods. The area has evidence of glacial deposits , with prominent erratic boulders becoming

8712-475: The South East, but its economic diversity and capacity for regeneration declined in the decades that followed World War II as Central Government sought to restrict the city's growth and disperse industry and population to the stagnating areas of Wales and Northern England . These measures hindered "the natural self-regeneration of businesses in Birmingham, leaving it top-heavy with the old and infirm", and

8844-636: The UK by people from foreign nations. The name Birmingham comes from the Old English Beormingahām , meaning the home or settlement of the Beormingas – a tribe or clan whose name means 'Beorma's people' and which may have formed an early unit of Anglo-Saxon administration. Beorma , after whom the tribe was named, could have been its leader at the time of the Anglo-Saxon settlement,

8976-556: The Wake Green football club; Bartley and Frankley reservoirs; and Handsworth cemetery with surrounding golf courses. Birmingham has many areas of wildlife that lie in both informal settings such as the Project Kingfisher and Woodgate Valley Country Park and in a selection of parks such as Lickey Hills Country Park , Pype Hayes Park & Newhall Valley, Handsworth Park , Kings Heath Park , and Cannon Hill Park ,

9108-628: The Welsh capital Cardiff , 45 miles (72 km) south-west of Nottingham , 70 miles (110 km) south of Manchester , and 75 miles (121 km) north-north-east of Bristol . Much of the area now occupied by the city was originally a northern reach of the ancient Forest of Arden and the city remains relatively densely covered by oak in a large number of districts such as Moseley , Saltley , Yardley , Stirchley and Hockley . These places, with names ending in "-ley", deriving from Old English - lēah meaning "woodland clearing", are named after

9240-499: The age of 25 and the median age being 34 years of age, below the national average of 40. Religion in Birmingham (2021) Christianity is the largest religion within Birmingham, with 34% of residents identifying as Christians in the 2021 Census . The city's religious profile is highly diverse: outside London, Birmingham has the United Kingdom's largest Muslim , Sikh and Buddhist communities; its second largest Hindu community; and its seventh largest Jewish community. Between

9372-400: The air/combustion gases to flow more smoothly the engine will be more efficient and use less fuel. A standard definition is used to assess how different things change engine efficiency and also to allow comparisons to be made between different engines. This definition is called specific fuel consumption , or how much fuel is needed to produce one unit of thrust. For example, it will be known for

9504-639: The area during the Bronze Age , when a substantial but short-lived influx of population occurred between 1700 BC and 1000 BC, possibly caused by conflict or immigration in the surrounding area. During the 1st-century Roman conquest of Britain , the forested country of the Birmingham Plateau formed a barrier to the advancing Roman legions, who built the large Metchley Fort in the area of modern-day Edgbaston in AD ;48, and made it

9636-532: The art for the time, including a telephone, a 54-inch fan in the lecture theatre for driving air into the building, an electric lift from the Otis Elevator Company , and a Synchronome master-clock, which controlled all house timepieces. In 1933 architect James Miller , who also designed the neighbouring Institution of Civil Engineers , remodelled the building, expanding the library and introducing electric lighting. The building would go on to host

9768-470: The borough are designated as green belt , as a portion of the wider West Midlands Green Belt. This is a strategic local government policy used to prevent urban sprawl and preserve greenfield land . Areas included are the aforementioned Sutton Park; land along the borough boundary by the Sutton Coldfield, Walmley and Minworth suburbs; Kingfisher, Sheldon, Woodgate Valley country parks; grounds by

9900-475: The city became increasingly dependent on the motor industry . The recession of the early 1980s saw Birmingham's economy collapse, with unprecedented levels of unemployment and outbreaks of social unrest in inner-city districts. Since the turn of the 21st century, many parts of Birmingham have been transformed, with the redevelopment of the Bullring Shopping Centre , the construction of

10032-570: The city centre . The city does however have numerous canals , collectively named the Birmingham Canal Navigations . Historically a market town in Warwickshire in the medieval period, Birmingham grew during the 18th century during the Midlands Enlightenment and during the Industrial Revolution , which saw advances in science, technology and economic development, producing a series of innovations that laid many of

10164-575: The city via the Cheshire gap on north westerly airstreams, but can also come off the North Sea from north easterly airstreams. Extreme weather is rare, but the city has been known to experience tornadoes . On 14 June 1931, an extremely damaging T6/F3 tornado struck the city, carving an 11-mile damage path through Hollywood, Hall Green, Sparkbrook, Tyseley, Greet and Small Heath, causing extensive damage and killing 1 woman. On 23 November 1981, during

10296-586: The city. Birmingham is drained only by minor rivers and brooks, primarily the River Tame and its tributaries the Cole and the Rea . Birmingham is located significantly inland, and its nearest body of sea is at Liverpool Bay . It lies at the same latitude as Lowestoft , Britain's easternmost settlement; it is therefore much more proximate to the western coast of Wales, at Cardigan Bay . The City of Birmingham forms

10428-557: The coldest night typically fell to −9.0 °C (15.8 °F). Some 11.2 days each year rose to a temperature of 25.1 °C (77.2 °F) or above and 51.6 nights reported an air frost. The highest recorded temperature recorded at the Edgbaston Campus was 37.4 °C (99.3 °F), whilst a temperature of 37.0 °C (98.6 °F) was recorded at Birmingham Airport on the city's eastern edge, both recorded on 19 July 2022 . Like most other large cities, Birmingham has

10560-479: The creation of a planned market town and seigneurial borough within his demesne or manorial estate, around the site that became the Bull Ring . This established Birmingham as the primary commercial centre for the Birmingham Plateau at a time when the area's economy was expanding rapidly, with population growth nationally leading to the clearance, cultivation and settlement of previously marginal land. Within

10692-599: The divergent area is less than required to give complete internal expansion to ambient pressure as a trade-off with external body drag. Whitford gives the F-16 as an example. Other underexpanded examples were the XB-70 and SR-71. The nozzle size, together with the area of the turbine nozzles, determines the operating pressure of the compressor. This overview highlights where energy losses occur in complete jet aircraft powerplants or engine installations. A jet engine at rest, as on

10824-405: The end of World War II were unsuccessful. Even before the start of World War II, engineers were beginning to realize that engines driving propellers were approaching limits due to issues related to propeller efficiency, which declined as blade tips approached the speed of sound . If aircraft performance were to increase beyond such a barrier, a different propulsion mechanism was necessary. This

10956-425: The engine is controlled primarily by the operating conditions inside the engine which are the pressure produced by the compressor and the temperature of the combustion gases at the first set of rotating turbine blades. The pressure is the highest air pressure in the engine. The turbine rotor temperature is not the highest in the engine but is the highest at which energy transfer takes place ( higher temperatures occur in

11088-650: The engine, producing thrust. All the air entering the compressor is passed through the combustor, and turbine, unlike the turbofan engine described below. Turbofans differ from turbojets in that they have an additional fan at the front of the engine, which accelerates air in a duct bypassing the core gas turbine engine. Turbofans are the dominant engine type for medium and long-range airliners . Turbofans are usually more efficient than turbojets at subsonic speeds, but at high speeds their large frontal area generates more drag . Therefore, in supersonic flight, and in military and other aircraft where other considerations have

11220-463: The exchange of knowledge between pure science and the practical world of manufacturing and technology. This created a "chain reaction of innovation", forming a pivotal link between the earlier Scientific Revolution and the Industrial Revolution that would follow. Birmingham's explosive industrial expansion started earlier than that of the textile-manufacturing towns of the North of England , and

11352-626: The fabric of privilege to its base" in 1832 led John Bright to make Birmingham the platform for his successful campaign for the Second Reform Act of 1867, which extended voting rights to the urban working class. The original Charter of Incorporation , dated 31 October 1838, was received in Birmingham on 1 November, then read in the Town Hall on 5 November with elections for the first Birmingham Town Council being held on 26 December. Sixteen Aldermen and 48 Councillors were elected and

11484-399: The final quarter of the 20th century. The Watt steam engine was invented in Birmingham. The resulting high level of social mobility also fostered a culture of political radicalism which, under leaders from Thomas Attwood to Joseph Chamberlain , was to give it a political influence unparalleled in Britain outside London and a pivotal role in the development of British democracy. From

11616-467: The first ground attacks and air combat victories of jet planes. Following the end of the war the German jet aircraft and jet engines were extensively studied by the victorious allies and contributed to work on early Soviet and US jet fighters. The legacy of the axial-flow engine is seen in the fact that practically all jet engines on fixed-wing aircraft have had some inspiration from this design. By

11748-458: The first importance" in the development of the mechanised cotton industry . In 1741 they opened the world's first cotton mill in Birmingham's Upper Priory. In 1746 John Roebuck invented the lead chamber process , enabling the large-scale manufacture of sulphuric acid , and in 1780 James Keir developed a process for the bulk manufacture of alkali , together marking the birth of the modern chemical industry . In 1765 Matthew Boulton opened

11880-603: The first public presentation of Frank Whittle 's jet engine in 1945. In 1943 it became the venue for the Royal Electrical & Mechanical Engineers ' planning of Operation Overlord and the invasion of Normandy. Today No. 1 Birdcage Walk hosts events, lectures, seminars and meetings in 17 conference and meeting rooms named after notable former members of the Institution, such as Whittle, Stephenson and Charles Parsons . The following are membership grades with post-nominals  : The James Watt International Medal

12012-426: The first time the manufacturing capacity of human society from the limited availability of hand, water and animal power, this was arguably the pivotal moment of the entire Industrial Revolution and a key factor in the worldwide increases in productivity over the following century. Birmingham rose to national political prominence in the campaign for political reform in the early 19th century, with Thomas Attwood and

12144-647: The focus of a network of Roman roads . Birmingham was then later established by the Beormingas around the 6th or 7th century as a small settlement in the then heavily forested Arden region in Mercia . The development of Birmingham into a significant urban and commercial centre began in 1166, when the Lord of the Manor Peter de Bermingham obtained a charter to hold a market at his castle , and followed this with

12276-712: The form of rocket engines they power model rocketry , spaceflight , and military missiles . Jet engines have propelled high speed cars, particularly drag racers , with the all-time record held by a rocket car . A turbofan powered car, ThrustSSC , currently holds the land speed record . Jet engine designs are frequently modified for non-aircraft applications, as industrial gas turbines or marine powerplants . These are used in electrical power generation, for powering water, natural gas, or oil pumps, and providing propulsion for ships and locomotives. Industrial gas turbines can create up to 50,000 shaft horsepower. Many of these engines are derived from older military turbojets such as

12408-535: The former forest. Birmingham is dominated by the Birmingham Fault, which runs diagonally through the city from the Lickey Hills in the south west, passing through Edgbaston and the Bull Ring, to Erdington and Sutton Coldfield in the north east. To the south and east of the fault the ground is largely softer Mercia Mudstone , interspersed with beds of Bunter pebbles and crossed by the valleys of

12540-399: The foundations of modern industrial society . By 1791, it was being hailed as "the first manufacturing town in the world". Birmingham's distinctive economic profile, with thousands of small workshops practising a wide variety of specialised and highly skilled trades, encouraged exceptional levels of creativity and innovation; this provided an economic base for prosperity that was to last into

12672-550: The heart of the emergence of industrial society . In 1709 the Birmingham-trained Abraham Darby I moved to Coalbrookdale in Shropshire and built the first blast furnace to successfully smelt iron ore with coke , transforming the quality, volume and scale on which it was possible to produce cast iron . In 1732 Lewis Paul and John Wyatt invented roller spinning , the "one novel idea of

12804-490: The house of James McConnell , after viewing locomotive trials at the Lickey Incline . Beyer, Richard Peacock , George Selby , Archibald Slate and Edward Humphrys were present. Bromsgrove seems the more likely candidate for the initial discussion, not least because McConnell was the driving force in the early years. A meeting took place at the Queen's Hotel in Birmingham to consider the idea further on 7 October and

12936-500: The industry's products. By the 1600s Birmingham formed the commercial hub of a network of forges and furnaces stretching from South Wales to Cheshire and its merchants were selling finished manufactured goods as far afield as the West Indies . These trading links gave Birmingham's metalworkers access to much wider markets, allowing them to diversify away from lower-skilled trades producing basic goods for local sale, towards

13068-458: The late 1990s. This, combined with greatly decreased fuel consumption, permitted routine transatlantic flight by twin-engined airliners by the turn of the century, where previously a similar journey would have required multiple fuel stops. The principle of the jet engine is not new; however, the technical advances necessary to make the idea work did not come to fruition until the 20th century. A rudimentary demonstration of jet power dates back to

13200-476: The later expansion of the Anglo-Saxon population, in some cases possibly on earlier British sites. There is evidence of early human activity in the Birmingham area dating back to around 8000 BC, with Stone Age artefacts suggesting seasonal settlements, overnight hunting parties and woodland activities such as tree felling. The many burnt mounds that can still be seen around the city indicate that modern humans first intensively settled and cultivated

13332-571: The latest advances and issues, to enable networking among different industry leaders, and to promote the field of Medical Engineering, also known as Bioengineering or Biomedical Engineering , to government, healthcare professionals and the wider public. This committee offers: The Railway Division was formed in 1969 when the Institution of Locomotive Engineers amalgamated with IMechE. Birmingham Birmingham ( / ˈ b ɜːr m ɪ ŋ ə m / BUR -ming-əm )

13464-538: The latter also housing the mini zoo, Birmingham Wildlife Conservation Park . The 2021 census recorded 1,144,900 people living in Birmingham, an increase of around 6.7% from 2011 when 1,073,045 were recorded. It is the 27th largest city in Europe by population within its city boundary. Birmingham's continuous urban area extends beyond the city's boundaries: the Birmingham Larger Urban Zone ,

13596-443: The main engineering disciplines for the length of a degree course. On successful completion, they become Whitworth Scholars, with a medal and are entitled to use post-nominals Wh.Sch.. It was founded by Joseph Whitworth . The Engineering Heritage Awards were created in 1984 to help recognise and promote the value of artefacts, locations, collections and landmarks of significant engineering importance. Along with The Manufacturer,

13728-472: The members of the Lunar Society of Birmingham – became influential participants in the circulation of philosophical and scientific ideas among Europe's intellectual elite. The close relationship between Enlightenment Birmingham's leading thinkers and its major manufacturers – in men like Matthew Boulton and James Keir they were often in fact the same people – made it particularly important for

13860-445: The most famous mechanical engineer of the age, had been refused admission to the Institution of Civil Engineers unless he sent in "a probationary essay as proof of his capacity as an engineer". However, this account has been challenged as part of a pattern of exaggeration on Smiles' part aimed at glorifying the struggles that various Victorian mechanical engineers had to overcome in their personal efforts to attain greatness. Though there

13992-425: The most well-known political figures who have lived in Birmingham. The city established its own university in 1900. The city suffered heavy bomb damage during World War II 's " Birmingham Blitz ". The city was also the scene of two scientific discoveries that were to prove critical to the outcome of the war. Otto Frisch and Rudolf Peierls first described how a practical nuclear weapon could be constructed in

14124-394: The net thrust of a rocket engine is: Where F N {\displaystyle F_{N}} is the net thrust, I sp,vac {\displaystyle I_{\text{sp,vac}}} is the specific impulse , g 0 {\displaystyle g_{0}} is a standard gravity , m ˙ {\displaystyle {\dot {m}}}

14256-618: The new Library of Birmingham (the largest public library in Europe) and the regeneration of old industrial areas such as Brindleyplace , The Mailbox and the International Convention Centre , as well as the rationalisation of the Inner Ring Road . In 1998 Birmingham hosted the 24th G8 summit . The city successfully hosted the 2022 Commonwealth Games . On 5 September 2023 Birmingham city council issued

14388-560: The north and west. The city absorbed Sutton Coldfield in 1974 and became a metropolitan borough in the new West Midlands county . A top-level government body, the West Midlands Combined Authority , was formed in April 2016. The WMCA holds devolved powers in transport, development planning, and economic growth. The authority is governed by a directly elected mayor , similar to the Mayor of London . Birmingham

14520-544: The north of the city, is the largest urban park in Europe and a national nature reserve . Birmingham Botanical Gardens , located close to the city centre, retains the regency landscape of its original design by J. C. Loudon in 1829, while the Winterbourne Botanic Garden in Edgbaston reflects the more informal Arts and Crafts tastes of its Edwardian origins. Several green spaces within

14652-404: The nozzle but their static values drop as the gas speeds up. The velocity of the air entering the nozzle is low, about Mach 0.4, a prerequisite for minimizing pressure losses in the duct leading to the nozzle. The temperature entering the nozzle may be as low as sea level ambient for a fan nozzle in the cold air at cruise altitudes. It may be as high as the 1000 Kelvin exhaust gas temperature for

14784-420: The population were aged between 15 and 64, higher than when compared to the national average of 64.1% in England and Wales. Furthermore, 20.9% of the population were aged under 15, higher than the national average of 17.4% while the population aged over 65 was 13.1%, which was lower than the national average of 18.6% respectively. Birmingham is one of the youngest cities in Europe with 40% of its population below

14916-537: The population were born outside the UK, an increase of 4.5% percentage points from 2011. Figures showed that the five largest foreign-born groups living in Birmingham were born in Pakistan, India, Bangladesh, Romania and Jamaica. In 2011, 57% of primary and 52% of secondary pupils were from non-White British families. As of 2021, 31.6% of school pupils in Birmingham were White , 37.7% were Asian , 12.6% were Black , 9.7% were Mixed race and 8.4% were Other. There

15048-451: The rigid paternalism and deference of feudal society , and loyalties to the traditional hierarchies of the established church and aristocracy were weak. The town's reputation for political radicalism and its strongly Parliamentarian sympathies saw it attacked by Royalist forces in the Battle of Birmingham in 1643, and it developed into a centre of Puritanism in the 1630s and as

15180-424: The same basic physical principles of thrust as a form of reaction engine , but is distinct from the jet engine in that it does not require atmospheric air to provide oxygen; the rocket carries all components of the reaction mass. However some definitions treat it as a form of jet propulsion . Because rockets do not breathe air, this allows them to operate at arbitrary altitudes and in space. This type of engine

15312-484: The state of the art in compressors. Alan Arnold Griffith published An Aerodynamic Theory of Turbine Design in 1926 leading to experimental work at the RAE . In 1928, RAF College Cranwell cadet Frank Whittle formally submitted his ideas for a turbojet to his superiors. In October 1929, he developed his ideas further. On 16 January 1930, in England, Whittle submitted his first patent (granted in 1932). The patent showed

15444-534: The summer of 1940 to the spring of 1943, Birmingham was bombed heavily by the German Luftwaffe in what is known as the Birmingham Blitz . The damage done to the city's infrastructure, in addition to a deliberate policy of demolition and new building by planners, led to extensive urban regeneration in subsequent decades. Birmingham's economy is now dominated by the service sector . The city

15576-857: The third in 2017. † Baker resigned in June 2018. The Institution's by-laws state that a casual vacancy for President shall be filled by appointing a Past President to the role; Tony Roche was elected and duly took up office for a second term in August of that year. The Institution of Mechanical Engineers has a number of committees that work to promote and develop thought leadership in different industry sectors. The Institution has 8 divisions: - Aerospace, Automobile, Biomedical Engineering Association, Construction & Building Services, Manufacturing Industries, Power Industries, Process Industries and Railway. Biomedical Engineering Association (BmEA) aims to bring together key workers from both medicine and engineering to discuss

15708-607: The town of Tamworth and the city of Lichfield in Staffordshire to the north; the city of Coventry and the towns of Nuneaton , Bedworth , Whitnash , Kenilworth , Rugby, Atherstone , Coleshill , Warwick and Leamington Spa to the east in Warwickshire and the Worcestershire towns of Redditch and Bromsgrove to the south west. As the crow flies, Birmingham lies approximately 100 miles (160 km) north-west of London , 85 miles (137 km) north-east of

15840-430: The town with an unusually high degree of social and economic freedom and initiating a period of transition and growth. The importance of the manufacture of iron goods to Birmingham's economy was recognised as early as 1538, and grew rapidly as the century progressed. Equally significant was the town's emerging role as a centre for the iron merchants who organised finance, supplied raw materials and traded and marketed

15972-585: The traditional centre point of England at Meriden , and is the most inland major city in the country, and lying north of the Cotswolds and east of the Shropshire Hills . Distinctively, Birmingham only has small rivers flowing through it, mainly the River Tame and its tributaries River Rea and River Cole – one of the closest main rivers is the Severn , approximately 20 miles (32 km) west of

16104-432: The turbines. Ram compression jet engines are airbreathing engines similar to gas turbine engines in so far as they both use the Brayton cycle . Gas turbine and ram compression engines differ, however, in how they compress the incoming airflow. Whereas gas turbine engines use axial or centrifugal compressors to compress incoming air, ram engines rely only on air compressed in the inlet or diffuser. A ram engine thus requires

16236-817: The wider metropolitan area with a population numbering 3,558,916 in 2019 according to Eurostat. Around 305,688 or 26.7% of the population in 2021 were foreign-born , making it a city with one of the largest migrant populations in Europe . According to figures from the 2021 census, 48.7% of the population was White (42.9% White British , 1.5% White Irish , 4.0% Other White , 0.2% Roma , 0.1% Irish Traveller ), 31% were Asian (17.0% Pakistani , 5.8% Indian , 4.2% Bangladeshi , 1.1% Chinese , 2.9% Other Asian ), 10.9% were Black (5.8% African , 3.9% Caribbean , 1.2% Other Black ), 4.8% of Mixed race (2.2% White and Black Caribbean, 0.4% White and Black African, 1.1% White and Asian, 1.1% Other Mixed), 1.7% Arab and 4.6% of Other ethnic heritage. The 2021 census showed 26.7% of

16368-604: Was able to demonstrate the basic concept. Ohain was then introduced to Ernst Heinkel , one of the larger aircraft industrialists of the day, who immediately saw the promise of the design. Heinkel had recently purchased the Hirth engine company, and Ohain and his master machinist Max Hahn were set up there as a new division of the Hirth company. They had their first HeS 1 centrifugal engine running by September 1937. Unlike Whittle's design, Ohain used hydrogen as fuel, supplied under external pressure. Their subsequent designs culminated in

16500-406: Was built in 1903 by Norwegian engineer Ægidius Elling . Such engines did not reach manufacture due to issues of safety, reliability, weight and, especially, sustained operation. The first patent for using a gas turbine to power an aircraft was filed in 1921 by Maxime Guillaume . His engine was an axial-flow turbojet, but was never constructed, as it would have required considerable advances over

16632-507: Was certainly coolness between Stephenson and the Institution of Civil Engineers, it is more likely that the motivation behind the founding of the Institution of Mechanical Engineers was simply the need for a specific home for the growing number of mechanical engineers employed in the burgeoning railway and manufacturing industries. Beyer proposed that George Stephenson become the Institution's first president in 1847, followed by his son, Robert Stephenson , in 1849. Beyer became vice-president and

16764-418: Was driven by different factors. Instead of the economies of scale of a low-paid, unskilled workforce producing a single bulk commodity such as cotton or wool in large, mechanised units of production, Birmingham's industrial development was built on the adaptability and creativity of a highly paid workforce with a strong division of labour , practising a broad variety of skilled specialist trades and producing

16896-578: Was eventually adopted by most manufacturers by the 1950s. Austrian Anselm Franz of Junkers ' engine division ( Junkers Motoren or "Jumo") introduced the axial-flow compressor in their jet engine. Jumo was assigned the next engine number in the RLM 109-0xx numbering sequence for gas turbine aircraft powerplants, "004", and the result was the Jumo 004 engine. After many lesser technical difficulties were solved, mass production of this engine started in 1944 as

17028-593: Was granted a patent for a jet engine design in March 1935. Republican president Manuel Azaña arranged for initial construction at the Hispano-Suiza aircraft factory in Madrid in 1936, but Leret was executed months later by Francoist Moroccan troops after unsuccessfully defending his seaplane base on the first days of the Spanish Civil War . His plans, hidden from Francoists, were secretly given to

17160-458: Was one of the first to present papers to the Institution; Charles Geach was the first treasurer. Throughout the 19th and 20th centuries some of Britain's most notable engineers held the position of president, including Joseph Whitworth , Carl Wilhelm Siemens and Harry Ricardo . It operated from premises in Birmingham until 1877 when it moved to London, taking up its present headquarters on Birdcage Walk in 1899. Upon its move to London in 1877

17292-427: Was still rather worse than piston engines, but by the 1970s, with the advent of high-bypass turbofan jet engines (an innovation not foreseen by the early commentators such as Edgar Buckingham , at high speeds and high altitudes that seemed absurd to them), fuel efficiency was about the same as the best piston and propeller engines. Jet engines power jet aircraft , cruise missiles and unmanned aerial vehicles . In

17424-409: Was the motivation behind the development of the gas turbine engine, the most common form of jet engine. The key to a practical jet engine was the gas turbine , extracting power from the engine itself to drive the compressor . The gas turbine was not a new idea: the patent for a stationary turbine was granted to John Barber in England in 1791. The first gas turbine to successfully run self-sustaining

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