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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] |
Fairchild F-46
The Fairchild F-46, also known as the Duramold Aircraft Corporation F-46 A, is a light aircraft that was built using the Duramold process, later used on the Spruce Goose. Development The process was developed jointly by the Haskelite Manufacturing Corporation as Plymold and the Fairchild Engine and Aircraft Corporation as Duramold. The plywood employed heat, pressure, plastics and wood to make complex structures in less time than could be done with aluminum construction. The Haskelite Corporation used this plywood for railway cars, buses, automobiles, and boats. Fairchild created its own use of the technology for making airplane structures. Design The Model 46 is a low-wing, cabin aircraft, with conventional landing gear and structures made using Duramold processes. The fuselage is constructed of two halves bonded together. The wings use wooden spars with plywood covering. The control surfaces use aluminum frames with aircraft fabric covering Aircraft fabric covering is a term ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haskelite
Haskelite is the brand name of a plywood, once made by the Michigan-based Haskelite Manufacturing Corporation. It was made from waterproof glue developed by Henry L. Haskell. The moldable plywood was originally called Ser-O-Ply. It was used in the construction of various vehicles including military tanks, boats, airplanes, buses, trucks, and automobiles. The plywood was manufactured with different characteristics depending on particular needs and then given a brand name. Background Haskell invented a process for making a waterproof glue called "black albumin glue" from blood-albumin which was used to bond wood including a lightweight waterproof plywood which was initially known as Ser-O-Ply. The plywood was used for boats, airplanes, tanks, trucks, automobiles and rail cars. The plywood panels had various layers of crossed-grain ply veneers to create the thickness and strength. Typical moldable plywood panels were about wide by long and thick. The sheets made this way w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timm Aircraft Company
The O.W. Timm Aircraft Company was an American aircraft manufacturer founded by Otto William Timm, based in Los Angeles, California. History Between 1911 and 1922 O.W. Timm built several aircraft with varying success before he founded, in 1922, the O.W. Timm Aircraft Company. Timm manufactured six models of a parasol design, the Collegiate. In 1934 Otto and his brother Wally Timm joined to form a new company named the Timm Airplane Company to produce the Timm T-S140, a high wing twin engine aircraft using new features developed at NACA such as flaps and tricycle landing gear. Wally Timm formed his own Glendale based aviation company later on, the Wally Timm Inc. The company developed a "plastic" material made of resin and wood similar to the Duramold process. The Duramold and Haskelite process was first developed in 1937. Followed by Gene Vidal's Weldwood and later the Aeromold process. The Aeromold process differs in that it is baked at a low at cutting and forming, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howard Hughes
Howard Robard Hughes Jr. (December 24, 1905 – April 5, 1976) was an American business magnate, record-setting pilot, engineer, film producer, and philanthropist, known during his lifetime as one of the most influential and richest people in the world. He first became prominent as a film producer, and then as an important figure in the aviation industry. Later in life, he became known for his eccentric behavior and reclusive lifestyle—oddities that were caused in part by his worsening obsessive-compulsive disorder (OCD), chronic pain from a near-fatal plane crash, and increasing deafness. As a film tycoon, Hughes gained fame in Cinema of the United States, Hollywood beginning in the late 1920s, when he produced big-budget and often controversial films such as ''The Racket (1928 film), The Racket'' (1928), ''Hell's Angels (film), Hell's Angels'' (1930), and ''Scarface (1932 film), Scarface'' (1932). He later acquired the RKO Pictures film studio in 1948, recognized then as one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hughes H-4 Hercules
The Hughes H-4 Hercules (commonly known as the ''Spruce Goose''; registration NX37602) is a prototype strategic airlift flying boat designed and built by the Hughes Aircraft Company. Intended as a transatlantic flight transport for use during World War II, it was not completed in time to be used in the war. The aircraft made only one brief flight, on November 2, 1947, and the project never advanced beyond the single example produced. Built from wood (Duramold process) because of wartime restrictions on the use of aluminum and concerns about weight, the aircraft was nicknamed the ''Spruce Goose'' by critics, although it was made almost entirely of birch.Parker, Dana T. ''Building Victory: Aircraft Manufacturing in the Los Angeles Area in World War II,'' pp. 49–58, Cypress, CA, 2013. . The Hercules is the largest flying boat ever built, and it had the largest wingspan of any aircraft that had ever flown until the Scaled Composites Stratolaunch first flew on April 13, 2019. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugene Luther Vidal
Eugene Luther "Gene" Vidal (; April 13, 1895 – February 20, 1969) was an American commercial aviation pioneer, New Deal official, inventor, and athlete. He was the father of author Gore Vidal. For eight years, from 1929 to 1937, he worked closely with Amelia Earhart in a number of aviation-related enterprises, and was President Franklin Roosevelt's top civil aviation director from 1933 to 1937. In his obituary, ''Time'' noted: "Eugene Vidal, 73, pioneer promoter of civil aviation and father of author Gore Vidal; in Los Angeles, Calif. Vidal starred in football at West Point and competed in the decathlon in the Antwerp Olympic Games of 1920. He later taught aviation and coached football at the academy, resigned his commission in 1926 to become assistant general manager of Transcontinental Air Transport (later TWA)." From September 1933 to March 1937 he was Director of the Bureau of Air Commerce (a predecessor of the Federal Aviation Administration) in Washington, where h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stitch And Glue
Stitch and glue is a simple boat building method which uses plywood panels temporarily stitched together, typically with wire or zip-ties, and glued together permanently with epoxy resin. This type of construction can eliminate much of the need for frames or ribs. Plywood panels are cut to shape and stitched together to form an accurate hull shape without the need for forms or special tools. This technique is also called "tack and tape", or "stitch and tape". Seams are reinforced with fiberglass tape and thickened epoxy. History The stitch and glue method was developed by woodwork teacher Ken Littledyke for the manufacture of canoes, later sold as the 'Kayel' in plan and kit form, using plywood panels joined by fiberglass tape and resin. The technique was then popularised by the first TV DIY expert, Barry Bucknell, in about 1964. The method was adopted, substituting copper wire ties rather than fishing line as in the early Littledyke examples, for the construction of the Mirro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenolic Resin
Phenol formaldehyde resins (PF) or phenolic resins (also infrequently called phenoplasts) are synthetic polymers obtained by the reaction of phenol or substituted phenol with formaldehyde. Used as the basis for Bakelite, PFs were the first commercial synthetic resins (plastics). They have been widely used for the production of molded products including billiards, billiard balls, laboratory countertops, and as coatings and adhesives. They were at one time the primary material used for the production of circuit boards but have been largely replaced with Epoxy#Electrical systems and electronics, epoxy resins and fiberglass cloth, as with fire-resistant FR-4 circuit board materials. There are two main production methods. One reacts phenol and formaldehyde directly to produce a thermosetting polymer, thermosetting network polymer, while the other restricts the formaldehyde to produce a prepolymer known as novolac which can be moulded and then cured with the addition of more formaldehyde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plywood
Plywood is a material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured boards which include medium-density fibreboard (MDF), oriented strand board (OSB) and particle board (chipboard). All plywoods bind resin and wood fibre sheets (cellulose cells are long, strong and thin) to form a composite material. This alternation of the grain is called ''cross-graining'' and has several important benefits: it reduces the tendency of wood to split when nailed at the edges; it reduces expansion and shrinkage, providing improved dimensional stability; and it makes the strength of the panel consistent across all directions. There is usually an odd number of plies, so that the sheet is balanced—this reduces warping. Because plywood is bonded with grains running against one another and with an odd number of composite part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Spruce Goose, 1987
A spruce is a tree of the genus ''Picea'' (), a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal (taiga) regions of the Earth. ''Picea'' is the sole genus in the subfamily Piceoideae. Spruces are large trees, from about 20 to 60 m (about 60–200 ft) tall when mature, and have whorled branches and conical form. They can be distinguished from other members of the pine family by their needles (leaves), which are four-sided and attached singly to small persistent peg-like structures (pulvini or sterigmata) on the branches, and by their cones (without any protruding bracts), which hang downwards after they are pollinated. The needles are shed when 4–10 years old, leaving the branches rough with the retained pegs. In other similar genera, the branches are fairly smooth. Spruce are used as food plants by the larvae of some Lepidoptera (moth and butterfly) species, such as the eastern spruce b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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