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Bristol Britannia
The Bristol Type 175 Britannia is a retired United Kingdom, British flight length, medium-to-long-range airliner built by the Bristol Aeroplane Company in 1952 to meet British civilian aviation needs. During development two prototypes were lost and the turboprop engines proved susceptible to inlet atmospheric icing, icing, which delayed entry into service while solutions were sought. By the time development was completed, "pure" jet airliners from France, the United Kingdom, and the United States were about to enter service, and consequently, only 85 Britannias were built before production ended in 1960. Nevertheless, the Britannia is considered one of the landmarks in turboprop-powered airliner design and was popular with passengers. It became known as "The Whispering Giant" for its quiet exterior noise and smooth flying, although the passenger interior remained less tranquil. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compression (physics), compression; thus, the diesel engine is called a compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Introduction Diesel engines work by compressing only air, or air combined with residual combustion gases from the exhaust (known as exhaust gas recirculation, "EGR"). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases air temperature inside the Cylinder (engine), cylinder so that atomised diesel fuel injected into the combustion chamber ignites. The torque a dies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbo-compound Engine
A turbo-compound engine is a reciprocating engine that employs a turbine to recover energy from the exhaust gases. Instead of using that energy to drive a turbocharger as found in many high-power aircraft engines, the energy is instead sent to the output shaft to increase the total power delivered by the engine. The turbine is usually mechanically connected to the crankshaft, as on the Wright R-3350 Duplex-Cyclone, but electric and hydraulic power recovery systems have been investigated as well. As this recovery process does not increase fuel consumption, it has the effect of reducing the specific fuel consumption, the ratio of fuel use to power. Turbo-compounding was used for commercial airliners and similar long-range, long-endurance roles before the introduction of turbojet engines. Examples using the Duplex-Cyclone include the Douglas DC-7B and Lockheed L-1049 Super Constellation, while other designs did not see production use. Concept Most piston engines produce a ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Napier Nomad
The Napier Nomad is a British diesel engine, diesel aircraft engine designed and built by Napier & Son in 1949. They combined a piston engine with a turbine to recover energy from the exhaust and thereby improve fuel efficiency, fuel economy. Two versions were tested, the complex Nomad I which used two propellers, each driven by mechanically independent stages, and the Nomad II, using the turbo-compound principle which coupled the two parts to drive a single propeller. The Nomad II had the lowest specific fuel consumption (shaft engine), specific fuel consumption figures seen up to that time. Despite this the Nomad project was cancelled in 1955 having spent £5.1 million on development, as most interest had passed to turboprop designs. Design and development In 1945 the Air Ministry asked for proposals for a new class engine with good fuel economy. Curtiss-Wright was designing an engine of this sort of power known as the turbo-compound engine, but Sir Harry Ricardo, one of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radial Engine
The radial engine is a reciprocating engine, reciprocating type internal combustion engine, internal combustion engine configuration in which the cylinder (engine), cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized Star polygon, star when viewed from the front, and is called a "star engine" in some other languages. The radial configuration was commonly used for aircraft engines before gas turbine engines became predominant. Engine operation Since the axes of the cylinders are coplanar, the connecting rods cannot all be directly attached to the crankshaft unless mechanically complex forked connecting rods are used, none of which have been successful. Instead, the pistons are connected to the crankshaft with a master-and-articulating-rod assembly. One piston, the uppermost one in the animation, has a master rod with a direct attachment to the crankshaft. The remaining pistons pin their connecting rods' attachments to rings ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Centaurus
The Centaurus was the final development of the Bristol Engine Company's series of sleeve valve radial aircraft engines. The Centaurus is an 18-cylinder, two-row design that eventually delivered over . The engine was introduced into service late in the Second World War and was one of the most powerful aircraft piston engines to see service. Design and development Like other Bristol sleeve valve engines, the Centaurus was based on the design knowledge acquired from an earlier design, in this case the Bristol Perseus cylinder. The Centaurus used 18 Perseus cylinders. The same cylinder was in use in the contemporary 14-cylinder Hercules, which was being brought into production when the design of the Centaurus started. The Centaurus had a cylinder swept volume of , nearly as much as the American Wright R-3350 ''Duplex-Cyclone'' large radial, making the Centaurus one of the largest aircraft piston engines to enter production, while that of the Hercules was . The nearly 40 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minister Of Supply
Minister may refer to: * Minister (Christianity), a Christian cleric ** Minister (Catholic Church) * Minister (government), a member of government who heads a ministry (government department) ** Minister without portfolio, a member of government with the rank of a normal minister but who doesn't head a ministry ** Shadow minister, a member of a Shadow Cabinet of the opposition ** Minister (Austria) * Minister (diplomacy), the rank of diplomat directly below ambassador * Ministerialis, a member of a noble class in the Holy Roman Empire * ''The Minister'', a 2011 French-Belgian film directed by Pierre Schöller See also *Ministry (other) *Minster (other) Minster may refer to: * Minster (church), an honorific title given to particular churches in England Places England * Minster, Swale (or Minster-in-Sheppey), a town in Swale, Kent ** Minster-on-Sea, the civil parish * Minster-in-Thanet, a vill ... *'' Yes Minister'' {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Brabazon
The Bristol Type 167 Brabazon was a large British piston engine, piston-engined Propeller (aircraft), propeller-driven airliner designed by the Bristol Aeroplane Company to fly Transatlantic flight, transatlantic routes between the UK and the United States. The type was named ''Brabazon'' after the Brabazon Committee and its chairman, John Moore-Brabazon, 1st Baron Brabazon of Tara, Lord Brabazon of Tara, which had developed the specification to which the airliner was designed. While Bristol had studied the prospects of developing very large aircraft as bomber aircraft, bombers prior to and during the World War II, Second World War, it was the release of a report compiled by the Brabazon Committee which led the company to adapt its proposed bomber into a large civil airliner to meet the ''Type I'' specification for the long-distance transatlantic route. Initially designated the Type 167, the proposed aircraft had a -diameter fuselage, containing full upper and lower decks on wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brabazon Committee
The Brabazon Committee was a committee set up by the British government in 1942 to investigate the future needs of the British Empire's civilian airliner market following World War II.Phipp, 2007, pp.15-16 The study was an attempt at defining, in broad overview, the impact of projected advances in aviation technology and to forecast the global needs of the post war British Empire (in South Asia, Africa, the Near and Far East) and Commonwealth (Australia, Canada, New Zealand) in the area of air transport, for passengers, mail, and cargo. The study recognized that the British Empire and Commonwealth as both a political and economic entity would have a vital need for aviation systems (principally aircraft) to facilitate its continued existence and self-reliance in the post-war world. For military and commercial reasons, the empire simply could not continue to exist if did not understand the needs, and develop the industrial infrastructure to provide, the aviation systems and sub-syst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Moore-Brabazon, 1st Baron Brabazon Of Tara
Lieutenant Colonel John Theodore Cuthbert Moore-Brabazon, 1st Baron Brabazon of Tara, , HonFRPS (8 February 1884 – 17 May 1964) was an English aviation pioneer and Conservative politician. He was the first Englishman to pilot a heavier-than-air machine under power in England, and he served as Minister of Transport and Minister of Aircraft Production during the Second World War. Early life Moore-Brabazon was born in London to Lieutenant Colonel John Arthur Henry Moore-Brabazon (1828–1908) and his wife, Emma Sophia née Richards (died 1937). He was educated at Harrow School before studying engineering at Trinity College, Cambridge, but did not graduate. He spent university holidays working for Charles Rolls as an unpaid mechanic, and became an apprentice at Darracq in Paris after leaving Cambridge. In 1907 he won the Circuit des Ardennes in a Minerva. Pioneer aviator Moore-Brabazon first flew solo in November 1908 in France in a Voisin biplane. He became the first resid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
