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Cylindrical Energy Module
An axial engine (sometimes known as a barrel engine or Z-crank engine) is a type of reciprocating engine with pistons arranged around an output shaft with their axes parallel to the shaft. Barrel refers to the cylindrical shape of the cylinder group (result of the pistons being spaced evenly around the central crankshaft and aligned parallel to the crankshaft axis) whilst the Z-crank alludes to the shape of the crankshaft. As a cam engine, an axial engine can use either a swashplate or a wobble plate to translate the piston motion to rotation. A wobble plate is similar to a swashplate, in that the pistons press down on the plate in sequence, imparting a lateral moment that is translated into rotary motion. This motion can be simulated by placing a compact disc on a ball bearing at its centre and pressing down at progressive places around its circumference. The difference is that while a wobble plate nutates, a swash-plate rotates. An alternative design, the Rand cam engine, rep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ignition Magneto
An ignition magneto (also called a high-tension magneto) is an older type of ignition system used in spark-ignition engines (such as petrol engines). It uses a magneto and a transformer to make pulses of high voltage for the spark plugs. The older term "high-tension" means "high-voltage". Design A simple magneto (an electrical generator using permanent magnets) is able to produce relatively low voltage electricity, however it is unable to produce the high voltages required by a spark plug as used in most modern engines (aside from diesel engines). An ''ignition magneto'' also includes an electrical transformer, which converts the electricity to a higher voltage (with the trade-off being a corresponding reduction in the output electric current, current). As the points begin to open, point spacing is initially such that the voltage across the primary coil would arc across the points. A capacitor is placed across the points which absorbs the energy stored in the leakage inductanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seattle
Seattle ( ) is the most populous city in the U.S. state of Washington and in the Pacific Northwest region of North America. With a population of 780,995 in 2024, it is the 18th-most populous city in the United States. The city is the county seat of King County, the most populous county in Washington. The Seattle metropolitan area's population is 4.02 million, making it the 15th-most populous in the United States. Its growth rate of 21.1% between 2010 and 2020 made it one of the country's fastest-growing large cities. Seattle is situated on an isthmus between Puget Sound, an inlet of the Pacific Ocean, and Lake Washington. It is the northernmost major city in the United States, located about south of the Canadian border. A gateway for trade with East Asia, the Port of Seattle is the fourth-largest port in North America in terms of container handling . The Seattle area has been inhabited by Native Americans (such as the Duwamish, who had at least 17 villages a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HRD Motorcycles
HRD Motors Ltd was a British motorcycle manufacturer in the 1920s. It was founded by Howard Raymond Davies. He had worked in motorcycling, and had raced with some success in the mid-twenties, but often not finishing due to unreliability. This inspired him to build a reliable performance motorcycle, using the advertising slogan "Built by a rider". Others also aimed at a similar market, like George Brough of Brough Superior motorcycles. After the First World War many motorcycle makers assembled their machines from engines and other major components sourced from different manufacturers. Davies' goal was to build a superior motorcycle from the best components available. Motorcycles were produced from 1924 to 1928, but the undercapitalised company, although having a reputation for performance, struggled to survive, and was ultimately sold to OK-Supreme, who then sold the name and goodwill to Phil Vincent, a motorcycle designer. The name was then incorporated into a new company, The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phil Irving
Philip Edward Irving (1903–1992) was an Australian engineer and author, most famous for the Repco-Brabham Formula One and Vincent motorcycle engines. He also worked at Velocette motorcycles, twice and designed the engine of the 1960 EMC 125cc racer. Early life Irving was the son of a medical doctor who had a 600 square-mile practice in Western Victoria which he travelled around using a Swift car and two motorcycles, a belt-drive Triumph and a four-cylinder FN. Due to a lack of local repair facilities, Dr. Irving performed all the maintenance at home. After three years of attendance at Wesley College, Phil Irving obtained a scholarship to Melbourne Technical College, where he studied a diploma course in Mechanical and Electrical Engineering where he designed and partially made his first engine, a small air-cooled two-stroke. He didn't finish the course or the engine, leaving early on the strength of his college studies and accomplishments to take his first job. Working car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthony Michell
Anthony George Maldon Michell FRS (21 June 1870 – 17 February 1959) was an Australian mechanical engineer of the early 20th century. Early life Michell was born in London while his parents were on a visit to England from Australia to which they had emigrated 17 years earlier. The family returned to Maldon, Victoria, in 1872, where young Anthony attended one of the state primary schools newly established in that area. He later returned to England and attended the Perse Grammar School while his elder brother, John Henry, attended Trinity College, Cambridge. On leaving school, A.G.M. Michell matriculated and spent one year as a non-collegiate student at Cambridge. In 1889, he returned to Australia and studied civil engineering at the University of Melbourne, graduating in 1895. For the next two years he obtained practical experience in structural engineering with the firm Johns and Waygood. He then returned to University, and completed a Master of Civil Engineering degree in 189 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco
San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of 2024, San Francisco is the List of California cities by population, fourth-most populous city in the U.S. state of California and the List of United States cities by population, 17th-most populous in the United States. San Francisco has a land area of at the upper end of the San Francisco Peninsula and is the County statistics of the United States, fifth-most densely populated U.S. county. Among U.S. cities proper with over 250,000 residents, San Francisco is ranked first by per capita income and sixth by aggregate income as of 2023. San Francisco anchors the Metropolitan statistical area#United States, 13th-most populous metropolitan statistical area in the U.S., with almost 4.6 million residents in 2023. The larger San Francisco Bay Area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sleeve Valve
The sleeve valve is a type of valve mechanism for piston engines, distinct from the usual poppet valve. Sleeve valve engines saw use in a number of pre–World War II luxury cars and in the United States in the Willys-Knight car and light truck. They subsequently fell from use due to advances in poppet-valve technology, including sodium cooling, and the Knight system double sleeve engine's tendency to burn a lot of lubricating oil or to seize due to lack of it. The Scottish Argyll company used its own, much simpler and more efficient, single sleeve system (Burt-McCollum) in its cars, a system which, after extensive development, saw substantial use in British aircraft engines of the 1940s, such as the Napier Sabre, Bristol Hercules, Centaurus, and the promising but never mass-produced Rolls-Royce Crecy, only to be supplanted by the jet engines. Description A sleeve valve takes the form of one (or in the case of double sleeve valves, two) machined cylinders which fit concentric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Derby
The Aerial Derby was an air race in the United Kingdom sponsored by the ''Daily Mail'' in which the competitors flew a circuit around London. It was first held in 1912, with subsequent races in 1913 and 1914. Suspended during the First World War, the event was revived in 1919 with a "Victory Aerial Derby". Further races were held in 1920, 1921, 1922 and 1923. Although a race was scheduled for 1924 there were insufficient entries, and the event was cancelled and not held again. 1912 The first race, held on Saturday 8 June, consisted of a single circuit of an course, starting and finishing at Hendon Aerodrome with control points at Kempton Park, Esher, Purley and Purfleet. At these contestants had to fly low enough for the judges to see the race number of their aircraft. The first prize was £250 and a gold cup. The first competition was the subject of enormous public interest, with around 45,000 people paying to view the start and finish at Hendon and enormous crowds ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudron G
The Caudron Type G was a single-engined French biplane built by Caudron prior to World War I. Developments of the Caudron G saw widespread service in France, the Russian Empire, and the United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan .... Specifications See also References Further reading * * {{Caudron aircraft 1910s French military reconnaissance aircraft Type G Sesquiplanes Single-engined tractor aircraft Aircraft first flown in 1913 Rotary-engined aircraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotary Engine
The rotary engine is an early type of internal combustion engine, usually designed with an odd number of cylinders per row in a radial configuration. The engine's crankshaft remained stationary in operation, while the entire crankcase and its attached cylinders rotated around it as a unit. Its main application was in aviation, although it also saw use in a few early motorcycles and automobiles. This type of engine was widely used as an alternative to conventional inline engines (straight or V) during World War I and the years immediately preceding that conflict. It has been described as "a very efficient solution to the problems of power output, weight, and reliability". By the early 1920s, the inherent limitations of this type of engine had rendered it obsolete. Description Distinction between "rotary" and "radial" engines A rotary engine is essentially a standard Otto cycle engine, with cylinders arranged radially around a central crankshaft just like a conventional radi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science Museum, London
The Science Museum is a major museum on Exhibition Road in South Kensington, London. It was founded in 1857 and is one of the city's major tourist attractions, attracting 3.3 million visitors annually in 2019. Like other publicly funded national museums in the United Kingdom, the Science Museum does not charge visitors for admission, although visitors are requested to make a donation if they are able. Temporary exhibitions may incur an admission fee. It is one of the five museums in the Science Museum Group. Founding and history The museum was founded in 1857 under Bennet Woodcroft from the collection of the Royal Society of Arts and surplus items from the Great Exhibition as part of the South Kensington Museum, together with what is now the Victoria and Albert Museum. It included a collection of machinery which became the ''Museum of Patents'' in 1858, and the ''Patent Office Museum'' in 1863. This collection contained many of the most famous exhibits of what is now th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
