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1 l'Europe centrale
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2 Europe
Europe [øʀɔp]feminine noun• l'Europe centrale/occidentale central/Western Europe* * *øʀɔpnom propre féminin Europe* * *øʀɔp nf* * *1 Géog Europe; l'Europe de l'Est Eastern Europe;2 Pol UE l'Europe communautaire the European community; l'Europe des douze the twelve, the twelve members of the EC; l'Europe de 1993 Europe in 1993; l'Europe verte Agricultural Europe; l'Europe de l'espace the joint European space venture; l'Europe sociale social aspects in Europe; faire l'Europe to build (the new) Europe.[ørɔp] nom propre féminin1. GÉOGRAPHIE(l')Europe de l'Est East ou Eastern Europel'Europe des douze the Twelve, the twelve member states (of the EC)2. RADIOEurope 1radio station broadcasting popular entertainment and general interest programmes -
3 central
1. adjective• l'Amérique/l'Asie centrale Central America/Asia2. masculine noun3. feminine nouna. (électrique, thermique) power stationb. ( = prison) prison4. compounds* * *
1.
1) ( au centre) centralcourt central — ( en tennis) centre [BrE] court
2) ( principal) main
2.
nom masculin Télécommunications* * *sɑ̃tʀal, o central, -e centraux mpl1. adj1) (position, point, quartier) centraloccuper une place centrale dans qch — to have a central place in sth, to be central to sth
2) (thèse, argument) central, mainun élément central de qch — a central element in sth, a key element of sth
2. nm(central téléphonique) exchange3. nfSee:* * *A adj1 ( au centre) [pouvoir, gare, pilier, banque] central; l'Europe/l'Asie/l'Afrique centrale Central Europe/Asia/Africa; court central ( en tennis) centreGB court; ordinateur central host computer; les rues centrales streets in the centre of town; l'axe central de la ville the main road through the town; habiter dans un quartier central to live near the centreGB of a town; chercher quelque chose de plus central to look for somewhere ou something more central;2 ( principal) [bureau, commissariat] main; elle occupe une position centrale dans l'entreprise she holds a key position within the company; ⇒ école.B nm1 Télécom central (téléphonique) (telephone) exchange;2 Sport le central centre court.C centrale nf1 Nucl, Électrotech power station; centrale nucléaire or atomique nuclear power station; centrale hydraulique/thermique hydroelectric/thermal power station; centrale solaire solar power station;2 Entr centrale syndicale or ouvrière confederation of trade unions; les centrales syndicales the trade unions;3 ( prison) prison (for offenders with sentences of more than two years);4 Comm centrale d'achat ( groupement) central purchasing agency; ( magasin) discount store for students, civil servants etc.le trou central the central ou middle hole2. [du centre d'une ville] centralle point central de votre exposé the main ou crucial ou key point in your thesiscentral nom masculin2. SPORT [de tennis]————————centrale nom féminin1. [usine] power stationcentrale électrique/nucléaire/thermique power/nuclear/thermal station2. POLITIQUEcentrale d'achats nom féminin[groupement] central purchasing department[magasin] discount store -
4 Chapelon, André
[br]b. 26 October 1892 Saint-Paul-en-Cornillon, Loire, Franced. 29 June 1978 Paris, France[br]French locomotive engineer who developed high-performance steam locomotives.[br]Chapelon's technical education at the Ecole Centrale des Arts et Manufactures, Paris, was interrupted by extended military service during the First World War. From experience of observing artillery from the basket of a captive balloon, he developed a method of artillery fire control which was more accurate than that in use and which was adopted by the French army.In 1925 he joined the motive-power and rolling-stock department of the Paris-Orléans Railway under Chief Mechanical Engineer Maurice Lacoin and was given the task of improving the performance of its main-line 4–6–2 locomotives, most of them compounds. He had already made an intensive study of steam locomotive design and in 1926 introduced his Kylchap exhaust system, based in part on the earlier work of the Finnish engineer Kyläla. Chapelon improved the entrainment of the hot gases in the smokebox by the exhaust steam and so minimized back pressure in the cylinders, increasing the power of a locomotive substantially. He also greatly increased the cross-sectional area of steam passages, used poppet valves instead of piston valves and increased superheating of steam. PO (Paris-Orléans) 4–6–2s rebuilt on these principles from 1929 onwards proved able to haul 800-ton trains, in place of the previous 500-ton trains, and to do so to accelerated schedules with reduced coal consumption. Commencing in 1932, some were converted, at the time of rebuilding, into 4–8–0s to increase adhesive weight for hauling heavy trains over the steeply graded Paris-Toulouse line.Chapelon's principles were quickly adopted on other French railways and elsewhere.H.N. Gresley was particularly influenced by them. After formation of the French National Railways (SNCF) in 1938, Chapelon produced in 1941 a prototype rebuilt PO 2–10–0 freight locomotive as a six-cylinder compound, with four low-pressure cylinders to maximize expansive use of steam and with all cylinders steam-jacketed to minimize heat loss by condensation and radiation. War conditions delayed extended testing until 1948–52. Meanwhile Chapelon had, by rebuilding, produced in 1946 a high-powered, three-cylinder, compound 4–8–4 intended as a stage in development of a proposed range of powerful and thermally efficient steam locomotives for the postwar SNCF: a high-speed 4–6–4 in this range was to run at sustained speeds of 125 mph (200 km/h). However, plans for improved steam locomotives were then overtaken in France by electriflcation and dieselization, though the performance of the 4–8–4, which produced 4,000 hp (3,000 kW) at the drawbar for the first time in Europe, prompted modification of electric locomotives, already on order, to increase their power.Chapelon retired from the SNCF in 1953, but continued to act as a consultant. His principles were incorporated into steam locomotives built in France for export to South America, and even after the energy crisis of 1973 he was consulted on projects to build improved, high-powered steam locomotives for countries with reserves of cheap coal. The eventual fall in oil prices brought these to an end.[br]Bibliography1938, La Locomotive à vapeur, Paris: J.B.Bailière (a comprehensive summary of contemporary knowledge of every function of the locomotive).Further ReadingH.C.B.Rogers, 1972, Chapelon, Genius of French Steam, Shepperton: Ian Allan.1986, "André Chapelon, locomotive engineer: a survey of his work", Transactions of the Newcomen Society 58 (a symposium on Chapelon's work).Obituary, 1978, Railway Engineer (September/October) (makes reference to the technical significance of Chapelon's work).PJGR
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