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Stressed Skin
In mechanical engineering, stressed skin is a rigid construction in which the skin or covering takes a portion of the structural load, intermediate between monocoque, in which the skin assumes all or most of the load, and a rigid frame, which has a non-loaded covering. Typically, the main frame has a rectangular structure and is Polygon triangulation, triangulated by the covering; a stressed skin structure has localized compression (physical), compression-taking elements (rectangular frame) and distributed tension (physics), tension-taking elements (skin). Description A simple framework box with four discrete members is not inherently rigid as it will distort from being square under relatively light loads; however, adding one or more diagonal element(s) that take either tension or compression makes it rigid, because the box cannot deviate from right angles without also altering the diagonals. Sometimes the diagonal elements are flexible like wires, which are used to provide te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeppelin-Lindau (Do) D
Luftschiffbau Zeppelin GmbH is a German aircraft manufacturing company. It is perhaps best known for its leading role in the design and manufacture of rigid airships, commonly referred to as ''Zeppelin, Zeppelins'' due to the company's prominence. The name 'Luftschiffbau' is a German word meaning ''building of airships''. The company was founded by Count Ferdinand von Zeppelin in 1908 as a formal entity to continue advancing his pioneering research into rigid airships. ''Luftschiffbau Zeppelin'' became the leading manufacturer in the field of large lighter-than-air vehicles; its products were used in both military and civilian capacities. The firm founded DELAG, the List of airlines by foundation, world's first airline to use an aircraft in revenue service, in 1909 on the back of public interest and using its own airships. During the First World War, Zeppelins were employed as the first German strategic bombing during World War I, long distance strategic bombers, launching numerou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Stephenson
Robert Stephenson , (honoris causa, Hon. causa) (16 October 1803 – 12 October 1859) was an English civil engineer and designer of locomotives. The only son of George Stephenson, the "Father of Railways", he built on the achievements of his father. Robert has been called the greatest engineer of the 19th century. Stephenson's death was widely mourned, and his funeral afforded marks of public honour. He is buried in Westminster Abbey. Early life Robert Stephenson was born on 16 October 1803, at Willington Quay, east of Newcastle upon Tyne, to George Stephenson and Frances ( Henderson), usually known as Fanny. She was twelve years older than George, and when they met she was working as a servant where George was lodging. After marrying, George and Fanny lived in an upper room of a cottage; George worked as a brakesman on the Stationary steam engine, stationary winding engine on the Quay, and in his spare time he cleaned and mended clocks and repaired shoes.In 1804, George bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeppelin-Staaken E-4/20
The Zeppelin-Staaken E-4/20 was a revolutionary four-engine all-metal passenger monoplane designed in 1917 by Adolf Rohrbach and completed in 1919 at the Zeppelin-Staaken works outside Berlin, Germany. The E-4/20 was the first four-engine, all-metal stressed skin heavier-than-air airliner built. Design and development At a time when most aircraft were small, single-engine biplanes made of wood and canvas, the E-4 was a large (102-foot wingspan), all-metal, four-engine, stress-skinned, semi-monocoque, cantilevered-wing monoplane, with an enclosed cockpit, and accommodation for 18 passengers plus a crew of five, including two pilots, a radio operator, an engineer and a steward, as well as radio-telegraph communications, a toilet, a galley and separate baggage and mail storage. With a maximum speed of 143 mph, cruising speed of , a range of about , and a fully loaded weight of , it outperformed most other airliners of its day. The E-4 included numerous innovations, includi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeppelin-Lindau (Dornier) Rs
Luftschiffbau Zeppelin GmbH is a German aircraft manufacturing company. It is perhaps best known for its leading role in the design and manufacture of rigid airships, commonly referred to as ''Zeppelins'' due to the company's prominence. The name 'Luftschiffbau' is a German word meaning ''building of airships''. The company was founded by Count Ferdinand von Zeppelin in 1908 as a formal entity to continue advancing his pioneering research into rigid airships. ''Luftschiffbau Zeppelin'' became the leading manufacturer in the field of large lighter-than-air vehicles; its products were used in both military and civilian capacities. The firm founded DELAG, the world's first airline to use an aircraft in revenue service, in 1909 on the back of public interest and using its own airships. During the First World War, Zeppelins were employed as the first long distance strategic bombers, launching numerous raids upon Belgium, France, and the United Kingdom. Following Count von Zeppelin's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unibody
A vehicle frame, also historically known as its ''chassis'', is the main supporting structure of a motor vehicle to which all other components are attached, comparable to the skeleton of an organism. Until the 1930s, virtually every car had a structural frame separate from its body, known as ''body-on-frame'' construction. Both mass production of completed vehicles by a manufacturer using this method, epitomized by the Ford Model T, and supply of rolling chassis to coachbuilders for both mass production (as by Fisher Body in the United States) and to smaller firms (such as Hooper (coachbuilder), Hooper) for bespoke bodies and interiors was practiced. By the 1960s, unibody construction in passenger cars had become common, and the trend towards building unibody passenger cars continued over the ensuing decades. Nearly all trucks, buses, and most Pickup truck, pickups continue to use a separate frame as their chassis. Functions The main functions of a frame in a motor vehicle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AEC Routemaster
The AEC Routemaster is a Front-engine, rear-wheel-drive layout, front-engined double-decker bus that was designed by London Transport Executive, London Transport and built by the Associated Equipment Company (AEC) and Park Royal Vehicles. The first prototype was completed in September 1954 and the last one was delivered in 1968. The layout of the vehicle was conventional for the time, with a half-cab, front-mounted engine and open rear platform, although the coach version was fitted with rear platform doors. Forward entrance vehicles with platform doors were also produced as was a unique front-entrance prototype with the engine mounted transversely at the rear. The first Routemasters entered service with London Transport in February 1956 and the last were withdrawn from regular service in December 2005, although two TfL heritage routes were subsequently operated by Routemasters in central London until 2019. Most Routemasters were built for London Transport (brand), London Tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Transport (brand)
London Transport (LT) was the public name and brand used by a series of public transport authorities in London, England, from 1933. Its most recognizable feature was the bar-and-circle 'roundel' logo. With its origins in the Underground Electric Railways Company of London (UERL), the brand was first used by the London Passenger Transport Board (LPTB) to unify the identity of the previously separately owned and managed London Underground, Metropolitan Railway, bus and tram services. The London Transport brand was extended under the direction of Frank Pick to all aspects of transport operation including poster designs, tickets, train livery, seat upholstery and the station architecture of Charles Holden. When public transport operation was taken over by Transport for London (TfL) from London Regional Transport (LRT) in 2000, the London Transport brand was discontinued and replaced with Transport for London's own branding, which incorporates many features of the London Transport bran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorhome
A motorhome (or coach) is a type of self-propelled recreational vehicle (RV) which is as the name suggests, like a home on wheels. Features Motorhomes usually have sleeping spaces for two to eight people. Each sleeping space is either fixed or converted from another part of the motorhome's interior, usually a fold-out sofa. A kitchenette area contains cooking equipment. The type of equipment included differs depending on the motorhome make and model, but generally a kitchenette has a stovetop, oven, refrigerator, and sink. More luxury models may also provide a microwave. A small bathroom with a shower, sink, and toilet is usually also located in the motorhome. On smaller motorhomes, the toilet may be of the "cassette toilet" type, which is a kind of portable toilet or Container-based sanitation, container-based toilet. The toilet sometimes swivels to provide extra room and can be accessed from outside the motorhome for easy emptying. Larger motorhomes usually have a separate sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airplanes
An airplane (American English), or aeroplane (Commonwealth English), informally plane, is a fixed-wing aircraft that is propelled forward by thrust from a jet engine, propeller, or rocket engine. Airplanes come in a variety of sizes, shapes, and wing configurations. The broad spectrum of uses for airplanes includes recreation, transportation of goods and people, military, and research. Worldwide, commercial aviation transports more than four billion passengers annually on airliners and transports more than 200 billion tonne-kilometersMeasured in RTKs—an RTK is one tonne of revenue freight carried one kilometer. of cargo annually, which is less than 1% of the world's cargo movement. Most airplanes are flown by a pilot on board the aircraft, but some are designed to be unmanned aerial vehicle, remotely or computer-controlled such as drones. The Wright brothers invented and flew the Wright Flyer, first airplane in 1903, recognized as "the first sustained and controlled heavier- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duralumin
Duralumin (also called duraluminum, duraluminium, duralum, dural(l)ium, or dural) is a trade name for one of the earliest types of age hardening, age-hardenable aluminium–copper alloys. The term is a combination of ''Düren'' and ''aluminium'' . Its use as a trade name is obsolete. Today the term mainly refers to aluminium-copper alloys, designated as the 2000 series by the international alloy designation system (IADS), as with 2014 aluminium alloy, 2014 and 2024 aluminium alloy, 2024 alloys used in airframe fabrication. Duralumin was developed in 1909 in Germany. Duralumin is known for its strength and hardness, making it suitable for various applications, especially in the aviation and aerospace industry. However, it is susceptible to corrosion, which can be mitigated by using alclad-duralum materials. History Duralumin was developed by the German metallurgist Alfred Wilm at private military-industrial laboratory (Center for Scientific-Technical Research) in Neubabelsberg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rohrbach Metall-Flugzeugbau
Rohrbach Metall-Flugzeugbau was an airplane factory located in Berlin, Germany and founded in 1922 by Dr.-Ing Adolf Rohrbach. Rohrbach was a pioneer in building airplanes based on the metal stressed skin principle. At the time of the early aircraft production the Versailles Treaty forbade the construction and export of large aircraft in Germany, so Rohrbach set up a Danish company, the 'Rohrbach-Metall-Aeroplan Co. A/S', to build the early Rohrbach aircraft. The strict regulation of the aircraft industry was relaxed in 1926 allowing the Rohrbach series to be built at the Rohrbach Metall-Flugzeugbau GmbH factory in Berlin. The company enjoyed only limited commercial success, with the Rohrbach Ro VIII Roland, Rohrbach Roland ten-seat airliner as its only model built in any quantity. By 1934 the company was taken over by Weser Flugzeugbau, where Adolf Rohrbach became technical director. Models * Rohrbach Ro I * Rohrbach Ro II 1923 * Rohrbach Ro III 1927 * Rohrbach Ro IIIa Rodra * R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
