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Tego Film
Tego film is an adhesive sheet, used in the manufacture of waterproof plywood. It is applied dry and cured by heat, which allows for high-quality laminates that are free from internal voids and warping. Tego film plywoods were used in aircraft manufacture in Germany during World War II, and the loss of the plant during a 1943 bombing raid was a serious blow to several aircraft projects. Tego film was an invention of the Essen Germany firm of Th. Goldschmidt AGlater Evonik Industrie) Development and use for plywood Tego film was developed as a glue for waterproof plywood. It comprised a paper sheet pre-impregnated with a resole phenolic resin. heated, assembled between s and then compressed, a strong and water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adhesive
Adhesive, also known as glue, cement, mucilage, or paste, is any non-metallic substance applied to one or both surfaces of two separate items that binds them together and resists their separation. The use of adhesives offers certain advantages over other binding techniques such as sewing, mechanical fastenings, or welding. These include the ability to bind different materials together, the more efficient distribution of stress across a joint, the cost-effectiveness of an easily mechanized process, and greater flexibility in design. Disadvantages of adhesive use include decreased stability at high temperatures, relative weakness in bonding large objects with a small bonding surface area, and greater difficulty in separating objects during testing. Adhesives are typically organized by the method of adhesion followed by ''reactive'' or ''non-reactive'', a term which refers to whether the adhesive chemically reacts in order to harden. Alternatively, they can be organized eithe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strategic Material
Strategic material is any sort of raw material that is important to an individual's or organization's strategic plan and supply chain management. Lack of supply of strategic materials may leave an organization or government vulnerable to disruption of the manufacturing of products which require those materials. It can also refer to a group or department that manages these materials. In government terms, they are materials, usually raw materials that have a particular strategic significance to a government or nation, often in time of war. Their strategic need is because of their crucial importance for either economic or military purposes. Some materials are relatively simple, but are required in great quantities during wartime. Others are obscure and technically complex. Although not required in large quantities, their irreplaceability and critical need makes them especially valuable. Foodstuffs are not generally classed as strategic materials: although vital, they are treated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerospace Materials
Aerospace materials are materials, frequently metal alloys, that have either been developed for, or have come to prominence through their use for aerospace purposes. These uses often require exceptional performance, strength or heat resistance, even at the cost of considerable expense in their production or machining. Others are chosen for their long-term reliability in this safety-conscious field, particularly for their resistance to fatigue. The field of materials engineering is an important one within aerospace engineering. Its practice is defined by the international standards bodies who maintain standards for the materials and processes involved. Engineers in this field may often have studied for degrees or post-graduate qualifications in it as a speciality. History Edwardian period The first aerospace materials were those long-established and often naturally occurring materials used to construct the first aircraft. These included such mundane materials as timber for w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodworking Adhesives
Woodworking is the skill of making items from wood, and includes cabinet making (cabinetry and furniture), wood carving, joinery, carpentry, and woodturning. History Along with stone, clay and animal parts, wood was one of the first materials worked by early humans. Microwear analysis of the Mousterian stone tools used by the Neanderthals show that many were used to work wood. The development of civilization was closely tied to the development of increasingly greater degrees of skill in working these materials. Among early finds of wooden tools are the worked sticks from Kalambo Falls, Clacton-on-Sea and Lehringen. The spears from Schöningen (Germany) provide some of the first examples of wooden hunting gear. Flint tools were used for carving. Since Neolithic times, carved wooden vessels are known, for example, from the Linear Pottery culture wells at Kückhofen and Eythra. Examples of Bronze Age wood-carving include tree trunks worked into coffins from northern Ger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duramold
Duramold is a composite material process developed by Virginius E. Clark. Birch or Populus, poplar plies are impregnated with phenolic resin and laminated together in a mold under heat (280 °F, 138 °C) and pressure for use as a lightweight structural material. Similar to plywood, Duramold and other lightweight composite materials like the similar Haskelite were considered critical during periods of material shortage in World War II, replacing scarce materials like aluminum alloys and steel.Dana T. Parker, ''Building Victory: Aircraft Manufacturing in the Los Angeles Area in World War II'', Cypress, CA, 2013, , pp. 51-52, 56. . The material has some advantages over metal in strength, construction technique, and weight. A cylinder made of Duramold is 80% stronger than a cylinder made of aluminum. Over 17 varieties of Duramold were developed, using various combinations of types of wood in thin plies. The Duramold process has also been used to make radomes for aircraft as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redux (adhesive)
Redux is the generic name of a family of phenol–formaldehyde/ polyvinyl–formal adhesives developed by Aero Research Limited (ARL) at Duxford, UK, in the 1940s, subsequently produced by Ciba (ARL). The brand name is now also used for a range of epoxy and bismaleimide adhesives manufactured by Hexcel. The name is a contraction of ''REsearch at DUXford''. History Devised at ARL by Dr. Norman de Bruyne and George Newell in 1941 for use in the aircraft industry, the adhesive is used for the bonding of metal-to-metal and metal-to-wood structures. The adhesive system comprises a liquid phenolic resin and a PVF (PolyVinylFormal) thermoplastic powder. The first formulation available was Redux Liquid E/Formvar, comprising a phenolic liquid (Redux Liquid E) and a PVF powder ( Formvar), and after its initial non-aviation related application of bonding clutch plates on Churchill and Cromwell tanks, it was used by de Havilland from 1943 to the early 1960s, on, among other aircraft, the H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guinea. Indonesia is the world's largest archipelagic state and the 14th-largest country by area, at . With over 275 million people, Indonesia is the world's fourth-most populous country and the most populous Muslim-majority country. Java, the world's most populous island, is home to more than half of the country's population. Indonesia is a presidential republic with an elected legislature. It has 38 provinces, of which nine have special status. The country's capital, Jakarta, is the world's second-most populous urban area. Indonesia shares land borders with Papua New Guinea, East Timor, and the eastern part of Malaysia, as well as maritime borders with Singapore, Vietnam, Thailand, the Philippines, Australia, Palau, and India ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emergency Fighter Program
The Emergency Fighter Program () was the program that resulted from a decision taken on July 3, 1944 by the Luftwaffe regarding the German aircraft manufacturing companies during the last year of the Third Reich. This project was one of the products of the latter part of 1944, when the Luftwaffe High Command saw that there was a dire need for a strong defense against Allied bombing raids. Although opposed by important figures such as Luftwaffe fighter force leader Adolf Galland, the project went ahead owing to the backing of Reichsmarschall Hermann Göring. Most of the designs of the Emergency Fighter Program never proceeded past the project stage. History 1944 opened with massive bombing raids by the US Army Air Force and RAF Bomber Command on a scale not seen before. With a shift of emphasis from targeting strategic targets to the destruction of the ''Luftwaffe'', during the Big Week in late February 1944 the ''Luftwaffe'' fighter force was broken. Attempts to address this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinkel He 162
The Heinkel He 162 ''Volksjäger'' (German, "People's Fighter") was a German single-engine, jet-powered fighter aircraft fielded by the Luftwaffe in World War II. Developed under the Emergency Fighter Program, it was designed and built quickly and made primarily of wood as metals were in very short supply and prioritised for other aircraft. ''Volksjäger'' was the Reich Air Ministry's official name for the government design program competition won by the He 162 design. Other names given to the plane include ''Salamander'', which was the codename of its wing-construction program, and ''Spatz'' ("Sparrow"), which was the name given to the plane by the Heinkel aviation firm. The aircraft was notable for its small size; although almost the same length as a Messerschmitt Bf 109, Bf 109, its wing was much shorter at vs. for the 109. Most distinctive was its top-mounted engine, which combined with the aircraft's ground-hugging landing gear allowed the engine to be easily accesse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leverkusen
Leverkusen () is a city in North Rhine-Westphalia, Germany, on the eastern bank of the Rhine. To the south, Leverkusen borders the city of Cologne, and to the north the state capital, Düsseldorf. With about 161,000 inhabitants, Leverkusen is one of the state's smaller cities. The city is known for the pharmaceutical company Bayer and its sports club Bayer 04 Leverkusen. History The heart of what is now Leverkusen was Wiesdorf, a village on the Rhine, which dates back to the 12th century. With the surrounding villages which have now been incorporated, the area also includes the rivers Wupper and Dhünn, and has suffered a lot from flooding, notably in 1571 and 1657, the latter resulting in Wiesdorf being moved East from the river to its present location. During the Cologne War, from 1583 to 1588 Leverkusen was ravaged by war. The entire area was rural until the late 19th century, when industry prompted the development that led to the city of Leverkusen, and to its becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ersatz
An ersatz good () is a substitute good, especially one that is considered inferior to the good it replaces. It has particular connotations of wartime usage. Etymology ''Ersatz'' is a German word literally meaning ''substitute'' or ''replacement''. Although it is used as an adjective in English, it is a noun in German. In German orthography noun phrases formed are usually represented as a single word, forming compound nouns such as ''Ersatzteile'' ("spare parts") or ''Ersatzspieler'' ("substitute player"). While ''ersatz'' in English generally means that the substitution is of unsatisfactory or inferior quality compared with the "real thing", in German, there is no such implication: e.g., ''Ersatzteile'' 'spare parts' is a technical expression without any implication about quality, whereas ''Kaffeeersatz'' 'coffee substitute' is not made from coffee beans, and is thus inferior. The term for inferior substitute in German would be ''Surrogat'', which is cognate to English word "surr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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