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Liberty Engine
The Liberty L-12 is an American water-cooled 45° V-12 engine, displacing and making , designed for a high power-to-weight ratio and ease of mass production. It was designed principally as an aircraft engine and saw wide use in aero applications. It also saw marine use (both in racing and in runabout boats) once it was marinized; it was used in various military tanks; and in some race cars. A single bank 6-cylinder version, the Liberty L-6, and V-8, the Liberty L-8, were derived from the Liberty L-12. It was succeeded by the Packard 1A-2500. Development In May 1917, a month after the United States had declared war on Germany, a federal task force known as the Aircraft Production Board summoned two top engine designers, Jesse G. Vincent (of the Packard Motor Car Company) and Elbert J. Hall (of the Hall-Scott Motor Company), to Washington. They were given the task of designing as rapidly as possible an aircraft engine that would rival if not surpass those of Great ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reciprocating Engine
A reciprocating engine, more often known as a piston engine, is a heat engine that uses one or more reciprocating pistons to convert high temperature and high pressure into a rotating motion. This article describes the common features of all types. The main types are: the internal combustion engine, used extensively in motor vehicles; the steam engine, the mainstay of the Industrial Revolution; and the Stirling engine for niche applications. Internal combustion engines are further classified in two ways: either a spark-ignition (SI) engine, where the spark plug initiates the combustion; or a compression-ignition (CI) engine, where the air within the cylinder is compressed, thus heating it, so that the heated air ignites fuel that is injected then or earlier.''Thermodynamics: An Engineering Approach'' by Yunus A. Cengal and Michael A. Boles Common features in all types There may be one or more pistons. Each piston is inside a cylinder, into which a gas is introduced, e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Engine
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many small UAVs have used electric motors. Manufacturing industry The largest manufacturer of turboprop engines for general aviation is Pratt & Whitney. General Electric announced in 2015 entrance into the market. Development history * 1903: Manly-Balzer engine sets standards for later radial engines. * 1910: Coandă-1910, an unsuccessful ducted fan aircraft exhibited at Paris Aero Salon, powered by a piston engine. The aircraft never flew, but a patent was filed for routing exhaust gases into the duct to augment thrust. * 1914: Auguste Rateau suggests using exhaust-powered compressor – a turbocharger – to improve high-altitude performance; not accepted after the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes D
Mercedes may refer to: People * Mercedes (name), a Spanish feminine name, including a list of people and fictional characters with the given name or last name Automobile-related * Mercedes (marque), the pre-1920 brand name of German automobile models and engines that are built by Daimler Motors company * Mercedes-Benz, the post-1920 German brand of automobiles, engines, and trucks now owned by the Mercedes-Benz Group * Mercedes-AMG, a subsidiary of Daimler AG that builds customized and high performance Mercedes-branded automobiles * Mercedes-Benz in Formula One, the Mercedes Formula One racing team, currently known as Mercedes-AMG Petronas Motorsport * Mercedes-Benz in motorsport, its activities in sportscar racing, rallying, Formula Three, DTM, V8 Supercars Australia and Formula One * American Mercedes (1904 automobile), a company licensed to build Mercedes automobiles in America Places * Mercedes, Buenos Aires Province, Argentina ** Mercedes Partido, Argentina * Merce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overhead Camshaft
An overhead camshaft (OHC) engine is a piston engine in which the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion chamber in the engine block. ''Single overhead camshaft'' (SOHC) engines have one camshaft per cylinder bank, bank of cylinders. ''Dual overhead camshaft'' (DOHC, also known as "twin-cam") engines have two camshafts per bank. The first production car to use a DOHC engine was built in 1910. Use of DOHC engines slowly increased from the 1940s, leading to many automobiles by the early 2000s using DOHC engines. Design In an OHC engine, the camshaft is located at the top of the engine, above the combustion chamber. This contrasts the earlier overhead valve engine (OHV) and flathead engine configurations, where the camshaft is located down in the engine block. The valves in both OHC and OHV engines are located above the combustion chamber; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willard InterContinental Washington
The Willard InterContinental Washington, commonly known as the Willard Hotel, is a historic luxury Beaux-Arts hotel located at 1401 Pennsylvania Avenue NW in Downtown Washington, D.C. It is currently a member of Historic Hotels of America, the official program of the National Trust for Historic Preservation. Among its facilities are numerous luxurious guest rooms, several restaurants, the famed Round Robin Bar, the Peacock Alley series of luxury shops, and voluminous function rooms. Owned jointly by Carr Companies and InterContinental Hotels & Resorts, it is two blocks east of the White House, and two blocks west of the Metro Center station of the Washington Metro. History Site The first structures to be built at 1401 Pennsylvania Avenue NW were six small houses constructed by Colonel John Tayloe III, of The Octagon House, DC, and Mount Airy, Virginia, in 1816.Moeller and Weeks, ''AIA Guide to the Architecture of Washington, D.C.'', 2006, p. 133. Tayloe leased the six b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hall-Scott
Hall-Scott Motor Car Company was an American manufacturing company based in Berkeley, California. It was among the most significant builders of water-cooled aircraft engines before World War I. History 1910–21 The company was founded in 1910 by Californians Elbert J. Hall and Bert C. Scott to manufacture engines for automobiles and later expanded the production of engines for trucks and airplanes as well as gasoline-powered rail cars and locomotives. Hall was a mechanic and engine builder and Scott, Stanford University-educated, was the business executive. They produced their first rail car in 1909, which they sold to the Yreka Railroad. In 1910, a factory was opened in Berkeley, California, with headquarters for a short time in San Francisco. The company built interurban electric railway cars for railroads such as the electrified Sacramento Northern, which ran trains from adjacent Oakland to Sacramento and Chico. The rail car business was slow, but some were sold as far a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Board
The Aircraft Board was a United States federal government organization created from the Aircraft Production Board on October 1, 1917, by Act of Congress to provide statutory authority to the APB, which had been created by a resolution of the Council of National Defense on May 16, 1917. Chaired by Howard E. Coffin, the Aircraft Board was also removed from the control of the Council of National Defense and placed under the Secretaries of War and the Navy. The boards, ruled advisory in nature by the Judge Advocate General, gave their recommendations to the Aviation Section, U.S. Signal Corps regarding the development and procurement of aircraft during World War I., pp. 27-29. 40 ''Stat.'' 296. The board consisted initially of Coffin, Brig. Gen. George O. Squier ( Chief Signal Officer), Rear Adm. David W. Taylor (Chief of the Bureau of Construction of the Navy), S.D. Waldron, Edward A. Deeds Edward Andrew Deeds (March 12, 1874 – July 1, 1960) was an American engineer, invent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Packard 1A-2500
The Packard 1A-2500 is an American V-12 liquid-cooled aircraft engine designed by Packard in 1924 as a successor to the World War I-era Liberty L-12. Five aero variants were produced, of which the 3A-2500 was the most numerous. Three marine versions, used most prominently in American World War II PT-boats, the 3M-2500, 4M-2500, and 5M-2500, were also derived from it. Applications * Boeing TB *Heinkel HE 8 * Martin T3M * Naval Aircraft Factory PN * Huff-Daland LB-1 * PT boats - marine versions of the 3M/4M/5M-2500 * Packard-Bentley one-off race car *USSR World War II torpedo boats and sub-chasers, which were fitted with 535 4M-2500 engines with W-8 modification under Lend-Lease Variants ;1A-2500:1924, 800 hp. Six built. ;2A-2500 :1925, 800 hp. 75 built. ;2A-2540:? Huff-Daland XHB-1 ;3A-2500:1926, Geared propeller drive option, 800 hp. 175 built. ;4A-2500:1927, fitted with a supercharger, 900 hp. One built. ;5A-2500:1930, experimental use only, 1500 hp. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automobile
A car, or an automobile, is a motor vehicle with wheels. Most definitions of cars state that they run primarily on roads, Car seat, seat one to eight people, have four wheels, and mainly transport private transport#Personal transport, people rather than cargo. There are around one billion cars in use worldwide. The French inventor Nicolas-Joseph Cugnot built the first steam-powered road vehicle in 1769, while the Swiss inventor François Isaac de Rivaz designed and constructed the first internal combustion-powered automobile in 1808. The modern car—a practical, marketable automobile for everyday use—was invented in 1886, when the German inventor Carl Benz patented his Benz Patent-Motorwagen. Commercial cars became widely available during the 20th century. The 1901 Oldsmobile Curved Dash and the 1908 Ford Model T, both American cars, are widely considered the first mass-produced and mass-affordable cars, respectively. Cars were rapidly adopted in the US, where they replac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tank
A tank is an armoured fighting vehicle intended as a primary offensive weapon in front-line ground combat. Tank designs are a balance of heavy firepower, strong armour, and battlefield mobility provided by tracks and a powerful engine; their main armament is often mounted within a turret. They are a mainstay of modern 20th and 21st century ground forces and a key part of combined arms combat. Modern tanks are versatile mobile land weapons platforms whose main armament is a large- calibre tank gun mounted in a rotating gun turret, supplemented by machine guns or other ranged weapons such as anti-tank guided missiles or rocket launchers. They have heavy vehicle armour which provides protection for the crew, the vehicle's munition storage, fuel tank and propulsion systems. The use of tracks rather than wheels provides improved operational mobility which allows the tank to overcome rugged terrain and adverse conditions such as mud and ice/snow better than wheele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marinized
Marinisation (also marinization) is design, redesign, or testing of products for use in a marine environment. Most commonly, it refers to use and long-term survival in harsh, highly corrosive salt water conditions. Marinisation is done by many manufacturing industries worldwide including many military organisations, especially navies. In some instances, cost is not a guiding force, and items may be designed from scratch with entirely non-corrosive components engineered and assembled to resist the effects of vibration and constantly changing attitude. In others, particularly in "marinising" an existing product that was not designed specifically for a marine environment for sale in the public marketplace, a balance must be found between the competing criteria. There are three main factors that need to be considered for a product to be truly marinised. * Resistance to corrosion. * Resistance to vibration. * Ability to function properly in conditions of constantly changing attitude ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
