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Windsurfers
Windsurfing is a wind-propelled water sport that is a combination of sailing and surfing. It is also referred to as "sailboarding" and "boardsailing", and emerged in the late 1960s from the Californian aerospace and surf culture. Windsurfing gained a popular following across Europe and North America by the late 1970s and had achieved significant global popularity by the 1980s. Windsurfing became an Olympic sport in 1984. History Newman Darby of Pennsylvania created a rudderless "sailboard" in 1964 that incorporated a pivoting "square rigged" or "kite rigged" sail which allowed the rider to steer a rectangular board by tilting the sail forward and back. Darby's design however had notable performance limitations. Unlike the modern windsurfer design, Darby's sailboard was operated "back winded", with the sailor's back to the lee side of a kite-shaped sail. This much less efficient and less desirable sailing position is opposite of how a modern windsurfer is operated. Jim Drake, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jim Drake (engineer)
Jim Drake (1929 – 2012) was an American aeronautics, aeronautical engineer who is widely credited with the invention of the sport of Windsurfing. He patented his windsurfing concept in 1968. Drake conceptualized, designed and hand built the first board and articulating sail rig prototype in his garage. He started the sport's first company, Windsurfing International. He produced multiple championship winning windsurfing board designs throughout his career, as well as created a popular offshoot of windsurfing with the world's first un-masted Wing foiling, wing sail. Drake would go on to become an altruistic figure head for the sport he pioneered over the course of his lifetime. Aeronautics career Drake earned a bachelor's degree in mechanical engineering with an option in aeronautics from Stanford university in 1951. He began his aeronautical engineering career at North American Aviation in his hometown of Los Angeles, California. There he worked in the advanced design group as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formula Windsurfing
Formula Windsurfing is the high-performance, competitive course-racing format of the windsurfing world. This type of sailing boards enjoy a massive wind range that enables racing in winds from 7 to 35 knots, and are capable of reaching speeds of over 30 knots. History and beginnings This class of windsurfing was born in the late 1990s as an upgrade from funboard-type course-racing boards looking to lower wind limits, broaden wind strengths and reduce racing costs with a limited quiver. Historically, board designers used to increase the length and volume of the boards in order to allow for sailing in lighter winds, but during the late 1990s, some brands like AHD, Berky, Drops, ML, Pro-Tech, Roberts and Starboard started to work on alternative solutions. They came up with designs that widened and shortened the board length whilst retaining high volume, and used larger fins to get into planing earlier. They also moved the fins further back, which prompted newer concepts with diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hood River Windsurfers 20060701 0759
Hood may refer to: Covering Apparel * Hood (headgear), type of head covering ** Article of academic dress ** Bondage hood, sex toy * Hoodie, hooded sweatshirt Anatomy * Clitoral hood, a hood of skin surrounding the clitoris * Hood, a flap of skin behind the head of a cobra Other coverings * Fume hood, piece of laboratory safety equipment * Hood (car), covering over the engine compartment in a motor vehicle ('bonnet' in most Commonwealth countries) * Kitchen hood, exhaust system for a stove or cooktop * Lens hood, device used to block light from creating glare in photographs Rail transport uses * Hood (rail transport), a rigid cover to protect a load on a flat wagon or a coil car * Hood unit, a type of diesel or electric locomotive ** Long hood ** Short hood Art, entertainment and media Fictional entities * The Hood, fictional Marvel Comics character * Hood (Malazan), fictional god in the ''Malazan Book of the Fallen'' universe * Hood (''Thunderbirds''), fiction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass-reinforced Plastic
Fiberglass (American English) or fibreglass ( Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth. The plastic matrix may be a thermoset polymer matrix—most often based on thermosetting polymers such as epoxy, polyester resin, or vinyl ester resin—or a thermoplastic. Cheaper and more flexible than carbon fiber, it is stronger than many metals by weight, non- magnetic, non- conductive, transparent to electromagnetic radiation, can be molded into complex shapes, and is chemically inert under many circumstances. Applications include aircraft, boats, automobiles, bath tubs and enclosures, swimming pools, hot tubs, septic tanks, water tanks, roofing, pipes, cladding, orthopedic casts, surfboards, and external door skins. Other common names for fiberglass are glass-reinforced plastic (GRP), glass-fiber reinforced plas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mylar
BoPET (biaxially oriented polyethylene terephthalate) is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, chemical stability, dimensional stability, transparency reflectivity, and electrical insulation. When metallized, it has gas and moisture barrier properties. The film is "biaxially oriented", which means that the polymer chains are oriented parallel to the plane of the film, and therefore oriented over two axes. A variety of companies manufacture boPET and other polyester films under different brand names. In the UK and US, the best-known trade names are Mylar, Melinex, Lumirror and Hostaphan. It was the first biaxially oriented polymer to be manufactured on a mass commercial scale. History BoPET film was developed in the mid-1950s,Izard, Emmette Farr"Production of polyethylene terephthalate" U.S. patent no. 2,534,028 (filed: 1948 May 13; issued: 1950 December 12). originally by DuPont, Imperial Chemical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyester
Polyester is a category of polymers that contain one or two ester linkages in every repeat unit of their main chain. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). Polyesters include some naturally occurring chemicals, such as those found in plants and insects. Natural polyesters and a few synthetic ones are biodegradable, but most synthetic polyesters are not. Synthetic polyesters are used extensively in clothing. Polyester fibers are sometimes spun together with natural fibers to produce a cloth with blended properties. Cotton-polyester blends can be strong, wrinkle- and tear-resistant, and reduce shrinking. Synthetic fibers using polyester have high water, wind, and environmental resistance compared to plant-derived fibers. They are less Fireproofing, fire-resistant and can melt when ignited. Liquid crystalline polyesters are among the first industrially used liquid crystal polymers. They are used for their mechanical propert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formula Class
In science, a formula is a concise way of expressing information symbolically, as in a mathematical formula or a ''chemical formula''. The informal use of the term ''formula'' in science refers to the general construct of a relationship between given quantities. The plural of ''formula'' can be either ''formulas'' (from the most common English plural noun form) or, under the influence of scientific Latin, ''formulae'' (from the original Latin). In mathematics In mathematics, a formula generally refers to an equation or inequality relating one mathematical expression to another, with the most important ones being mathematical theorems. For example, determining the volume of a sphere requires a significant amount of integral calculus or its geometrical analogue, the method of exhaustion. However, having done this once in terms of some parameter (the radius for example), mathematicians have produced a formula to describe the volume of a sphere in terms of its radius: : V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IQFoil
iQFoil is a windsurfing class selected by World Sailing to replace the RS:X for the 2024 Summer Olympics. The discipline has similarities to Formula Windsurfing, however a notable difference is that sailors only use one sail. The sail size was originally 9 m2 for the men and 8 m2 for the women. The rider has a choice between using a Sailing hydrofoil, hydrofoil or a conventional 68 cm fin. Equipment Evolution Starting in January 2025 there are equipment changes: * Men will switch from the 9 m2 sail to an 8 m2 (previous Female and Youth design) sail. * Female and Female Youth change from the 8 m2 sail to a new design 7.3 m2 sail. * Both categories adopt the existing 4.90 m mast to align with the revised sail sizes. Events World Championships * iQFoil World Championships * iQFoil Youth World Championships * Youth Sailing World Championships Olympics * Sailing at the 2024 Summer Olympics – Men's iQFoil * Sailing at the 2024 Summe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermoplastic
A thermoplastic, or thermosoftening plastic, is any plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling. Most thermoplastics have a high molecular weight. The polymer chains associate by intermolecular forces, which weaken rapidly with increased temperature, yielding a viscous liquid. In this state, thermoplastics may be reshaped, and are typically used to produce parts by various polymer processing techniques such as injection molding, compression molding, calendering, and extrusion. Thermoplastics differ from thermosetting polymers (or "thermosets"), which form irreversible chemical bonds during the curing process. Thermosets do not melt when heated, but typically decompose and do not reform upon cooling. Above its glass transition temperature and below its melting point, the physical properties of a thermoplastic change drastically without an associated phase change. Some thermoplastics do not fully ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plywood
Plywood is a composite material manufactured from thin layers, or "plies", of wood veneer that have been stacked and glued together. It is an engineered wood from the family of manufactured boards, which include plywood, medium-density fibreboard (MDF), oriented strand board (OSB), and particle board (or chipboard). All plywoods bind resin and wood fibre sheets (cellulose cells are long, strong and thin) to form a composite material. The sheets of wood are stacked such that each layer has its grain set typically (see below) perpendicular to its adjacent layers. 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 thickness swelling 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, that is, the surface layers ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epoxy
Epoxy is the family of basic components or Curing (chemistry), cured end products of epoxy Resin, resins. Epoxy resins, also known as polyepoxides, are a class of reactive prepolymers and polymers which contain epoxide groups. The epoxide functional group is also collectively called ''epoxy''. The IUPAC name for an epoxide group is an oxirane. Epoxy resins may be reacted (cross-linked) either with themselves through catalytic homopolymerisation, or with a wide range of co-reactants including polyfunctional amines, acids (and acid anhydrides), phenols, alcohols and thiols (sometimes called mercaptans). These co-reactants are often referred to as hardeners or curatives, and the cross-linking reaction is commonly referred to as Curing (chemistry), curing. Reaction of polyepoxides with themselves or with polyfunctional hardeners forms a thermosetting polymer, often with favorable mechanical properties and high thermal and chemical resistance. Epoxy has a wide range of application ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
