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Kylchap
The Kylchap steam locomotive exhaust system was designed and patented by French steam engineer André Chapelon, using a second-stage nozzle designed by the Finnish engineer Kyösti Kylälä, known as the ''Kylälä spreader'', with the composite name KylChap being given the design. Construction The Kylchap exhaust consists of four stacked nozzles, the first exhaust nozzle (UK: blastpipe) blowing exhaust steam only and known as the primary nozzle, with a Chapelon design using four triangular jets. That exhausts into the second stage, the Kylälä spreader, which mixes the exhaust steam with some of the smokebox gases. That exhausts into a third stage, designed by Chapelon, which mixes the resulting steam/smokebox gases mixture with yet more smokebox gases. The four nozzles of the third stage exhaust into the fourth stage, the classic bell-mouth chimney (U.S.: stack). Theory It was Chapelon's theory that such a multi-stage mixing and suction arrangement would be more effi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kylchap Schem
The Kylchap steam locomotive exhaust system was designed and patented by France, French steam engineer André Chapelon, using a second-stage nozzle designed by the Finland, Finnish engineer Kyösti Kylälä, known as the ''Kylälä spreader'', with the composite name KylChap being given the design. Construction The Kylchap exhaust consists of four stacked nozzles, the first exhaust nozzle (UK: blastpipe) blowing exhaust steam only and known as the primary nozzle, with a Chapelon design using four triangular jets. That exhausts into the second stage, the Kylälä spreader, which mixes the exhaust steam with some of the smokebox gases. That exhausts into a third stage, designed by Chapelon, which mixes the resulting steam/smokebox gases mixture with yet more smokebox gases. The four nozzles of the third stage exhaust into the fourth stage, the classic bell-mouth chimney (locomotive), chimney (U.S.: stack). Theory It was Chapelon's theory that such a multi-stage mixing and suctio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Chimney
A double chimney (or double stack, double smokestack in American English) is a form of chimney for a steam locomotive, where the conventional single opening is duplicated, together with the blastpipe beneath it. Although the internal openings form two circles, the outside appearance usually forms a single elongated oval. Purpose The classic exhaust design for a steam locomotive began with Hackworth's invention of the blastpipe, placed centrally within a tall chimney. Victorian developments reduced the chimney's height, such that natural draught was no longer significant. The standard design was then a circular drumhead smokebox, with a single blastpipe nozzle leading into a chimney with a flared petticoat pipe beneath it. From the work of theorists such as W.F.M. Goss of Purdue University, and later S.O. Ell of Swindon, guidelines were developed at each locomotive works, describing how these were to be proportioned. It was recognised both that a particular diameter of chimne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
André Chapelon
André Chapelon (26 October 1892 – 22 July 1978) was a French mechanical engineer and designer of advanced steam locomotives. A graduate engineer of Ecole Centrale Paris, he was one of very few locomotive designers who brought a rigorous scientific method to their design, and he sought to apply up-to-date theories and knowledge in subjects such as thermodynamics, and gas and fluid flow. Chapelon's work was an early example of what would later be called modern steam, and influenced the work of many later designers of those locomotives, such as Livio Dante Porta. Life and career André Xavier Chapelon was born in Saint-Paul-en-Cornillon, Loire, France on 26 October 1892. According to family relatives, his great-grandfather James Jackson immigrated to France from England in 1812, one of many who came to France in the 19th century to teach steel production methods. He achieved a distinction in mathematics and science, and served as an artillery officer during World War I before ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blastpipe
The blastpipe is part of the exhaust system of a steam locomotive that discharges exhaust steam from the cylinders into the smokebox beneath the chimney in order to increase the draught through the fire. History The primacy of discovery of the effect of directing the exhaust steam up the chimney as a means of providing draft through the fire is the matter of some controversy, Ahrons (1927) devoting significant attention to this matter. The exhaust from the cylinders on the first steam locomotive – built by Richard Trevithick – was directed up the chimney, and he noted its effect on increasing the draft through the fire at the time. At Wylam, Timothy Hackworth also employed a blastpipe on his earliest locomotives, but it is not clear whether this was an independent discovery or a copy of Trevithick's design. Shortly after Hackworth, George Stephenson also employed the same method, and again it is not clear whether that was an independent discovery or a copy of one of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LNER Peppercorn Class A2
The London and North Eastern Railway (LNER) Peppercorn Class A2 is a class of steam locomotive designed for express passenger work by Arthur Peppercorn, the chief designer of the LNER after Edward Thompson. All save the first of the 15 built were constructed under British Railways after nationalisation in 1948. Only one example is preserved. Design The A2s were a development on the 6 ft 2 in driving wheel locomotives of Peppercorn's predecessor, Edward Thompson. Thompson's designs were rebuilds of pre-existing Gresley designs, in addition to being constrained by wartime pressures. With a dilapidated locomotive and rolling stock fleet, Peppercorn designed his A2s to augment Thompson's designs and replace the aging Gresley locomotives. Peppercorn's design was influenced greatly by Thompson's A2/3 design, although his design differed most obviously with the less stretched look. This was achieved by moving the outside cylinders forward over the leading truck and amending t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BR Standard Class 8
The BR Standard Class 8 is a one-off 4-6-2 ''Pacific'' steam locomotive designed by Robert Riddles for use by British Railways. Only a single locomotive, the prototype, was constructed, which was named ''Duke of Gloucester''. Constructed at Crewe Works in 1954, the ''Duke'', as it is popularly known, was a replacement for the destroyed LMS Princess Royal Class locomotive 46202 ''Princess Anne'', which was involved in the Harrow and Wealdstone rail crash of 1952. The ''Duke'' was based on the BR Standard Class 7 ''Britannia'' design. It incorporated three sets of modified Caprotti valve gear, new to British locomotive engineering and more efficient than Walschaerts or Stephenson valve gear. Due to errors made during the original construction of The ''Duke'', it was regarded as a failure by locomotive crews due to its poor steaming characteristics and its heavy fuel consumption. Trials undertaken by British Railways also proved disappointing, revealing problems with the draug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kyösti Kylälä
Kyösti Kylälä (born Gustaf Georg Adrian Byström; 16 August 1868 in Salmi – 15 August 1936 in Vyborg) was a Finnish railroad engineer and self-taught inventor. In 1919 he patented in the UK an 'Improved means for increasing the draught in steam boilers, especially on locomotives.' Kylälä's invention, sometimes known as the 'Kylala spreader' involved the insertion of four nozzles in the blastpipe of steam locomotives A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the locomot .... The system was originally devised to reduce spark-throwing and later it was claimed that there was a more even draught over the tubeplate and that the need for tube-cleaning was reduced. It was tried out in 1922 by Lawson Billinton on a LB&SCR K class locomotive, but with only limited success. Later the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Locomotive Exhaust System
The steam locomotive exhaust system consists of those parts of a steam locomotive which together discharge exhaust steam from the cylinders in order to increase the draught through the fire. It usually consists of the blastpipe (or first stage nozzle), smokebox, and chimney, although later designs also include second and third stage nozzles. History The primacy of discovery of the effect of directing the exhaust steam up the chimney as a means of providing draft through the fire is the matter of some controversy, Ahrons (1927) devoting significant attention to this matter. The exhaust from the cylinders on the first steam locomotive – built by Richard Trevithick – was directed up the chimney, and he noted its effect on increasing the draft through the fire at the time. At Wylam, Timothy Hackworth also employed a blastpipe on his earliest locomotives, but it is not clear whether this was an independent discovery or a copy of Trevithick's design. Shortly after Hackworth, G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LNER Class A4 4468 Mallard
LNER Class A4 4468 ''Mallard'' is a 4-6-2 ("Pacific") steam locomotive built in 1938 for operation on the London and North Eastern Railway (LNER) at Doncaster Works to a design of Nigel Gresley. Its streamlined, wind tunnel tested design allowed it to haul long-distance express passenger services at high speeds. On 3 July 1938, ''Mallard'' broke the world speed record for steam locomotives at , which still stands today. While in British Railways days regular steam-hauled rail services in the UK were officially limited to a 'line speed', before the war, the A4s had to run significantly above just to keep schedule on trains such as the ''Silver Jubilee'' and '' The Coronation'', with the engines reaching 100 mph on many occasions. ''Mallard'' covered almost one and a half million miles (2.4 million km) before it was retired in 1963. The locomotive is long and weighs 165 long tons (168 tonnes, 369,600 lbs), including the tender. It is painted in LNER garter blue with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smokebox
A smokebox is one of the major basic parts of a steam locomotive exhaust system. Smoke and hot gases pass from the firebox through tubes where they pass heat to the surrounding water in the boiler. The smoke then enters the smokebox, and is exhausted to the atmosphere through the chimney (or funnel). Early locomotives had no smokebox and relied on a long chimney to provide natural draught for the fire but smokeboxes were soon included in the design for two specific reasons. Firstly and most importantly, the blast of exhaust steam from the cylinders, when directed upwards through an airtight smokebox with an appropriate design of exhaust nozzle, effectively draws hot gases through the boiler tubes and flues and, consequently, fresh combustion air into the firebox. Secondly, the smokebox provides a convenient collection point for ash and cinders ("char") drawn through the boiler tubes, which can be easily cleaned out at the end of a working day. Without a smokebox, all char m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LNER Peppercorn Class A2 60532 Blue Peter
LNER Peppercorn Class A2 No. 60532 ''Blue Peter'' is a 4-6-2 ("Pacific") steam locomotive built in 1948 at Doncaster Works to a design by Arthur Peppercorn, hauling express passenger services on British Railways' North Eastern Region. It is the only Peppercorn A2 in existence after the 14 other locomotives of its class were scrapped. ''Blue Peter'' was withdrawn from operation in 1966 and was bought for preservation in 1968. It gained notoriety in the 1970s and beyond following a campaign for its restoration on the BBC television series ''Blue Peter'', and the locomotive has subsequently been featured several times in the programme. In late 1994, it was involved in a severe wheel slip incident in Durham, damaging its running gear. It was later repaired and continued mainline excursion service in 1996 until 2001. In 2014, Blue Peter was purchased by the Royal Scot Locomotive and General Trust, where it received an extensive overhaul, and returned to steam in 2024. History Brit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur Peppercorn
Arthur Henry Peppercorn, (29 January 1889 – 3 March 1951) was an English railway engineer, and was the last Chief Mechanical Engineer (CME) of the London and North Eastern Railway. Career Arthur Peppercorn was born in Leominster in 1889 and educated at Hereford Cathedral School. In 1905 he started his career as an apprentice with the Great Northern Railway (GNR) at Doncaster. Then CME Nigel Gresley took a liking to the young apprentice and would supervise his career; in turn, Peppercorn was devoted to Gresley, and would in time be treated almost like one of the family. Gresley's sudden death in 1941 was a shock to all in the LNER, and although Peppercorn was considered for the role, his great modesty in comparison with that of the other candidate, Edward Thompson, as well as the influence Thompson held within the LNER seniority meant that it was Thompson who succeeded Gresley. Thompson was already 60 years old, and both he and the LNER recognised that his appointment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
