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Snow Grooming
Snow grooming is the process of manipulating snow for recreational uses with a tractor, snowmobile, piste caterpillar, truck or snowcat towing specialized equipment. The process is used to maintain ski hills, cross-country ski trails and snowmobile trails by grooming (moving, flattening, rototilling, or compacting) the snow on them. A snow groomer is usually employed to pack snow and improve skiing and snowboarding and snowmobile trail conditions. The resulting pattern on the snow is known as corduroy, and is widely regarded as a good surface on which to ski or ride. Snow groomers can also move accumulated snow made by snow machines as part of a process, called "snow farming". Snow groomer A snow groomer (informally called a "piste basher" in the United Kingdom) is a tracked vehicle equipped in front with a shovel (or dozer blade) and behind with a cutter (or roller). It is usually driven by diesel engines. When the machine drives over a snowfield, it pushes snow ahead of it a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oberstdorf Germany Nebelhornbahn-Snow-groomer-01
Oberstdorf ( Low Alemannic: ''Oberschdorf'') is a municipality and skiing and hiking town in Germany, located in the Allgäu region of the Bavarian Alps. It is the southernmost settlement in Germany and one of its highest towns. At the center of Oberstdorf is a church whose tall spire serves as a landmark for navigating around town. The summits of the Nebelhorn and Fellhorn provide dramatic panoramic views of the alps. The Nebelhorn can be reached with a big cable car. Visitors can ride a unique diagonal elevator to the top of the Heini-Klopfer-Skiflugschanze. Geography Administrative divisions Oberstdorf consists of the village of Oberstdorf (813 metres above sea level, survey point by the Roman Catholic church) and five other villages: * ''Kornau'' , 915 m. In the vicinity is the Söllereckbahn and the Chapel of St. Fabian and St. Sebastian which is rich in art treasures. * In ''Reichenbach'' (population: 226) is the 450-year-old Chapel of St. James and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terrain Park
A terrain park or snow park is an outdoor recreation area containing terrain that allows skiers, snowboarders and snowbikers to perform tricks. Terrain parks have their roots in skateparks and many of the features are common to both. From their inception to as recently as the 1980s, ski areas generally banned jumping and any kind of aerial maneuvers, usually under penalty of revoking the offender's lift ticket. By the 1990s, most areas provided snow features specifically catering to aerial snowsports. One of the first in-bounds terrain parks was the snowboard park built in 1990 at Vail's (Colorado) resort. The park was copied soon in other resorts. Today most resorts have terrain parks, with many having multiple parks of various difficulty. Some resorts are almost exclusively terrain parks such as Echo Mountain Park in Evergreen, Colorado and Snow Park in Wanaka, New Zealand. In Colorado there has been a recent trend for defunct resorts such as Squaw Pass (now Echo Mountain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peat Bog
A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and muskeg; alkaline mires are called fens. A baygall is another type of bog found in the forest of the Gulf Coast states in the United States.Watson, Geraldine Ellis (2000) ''Big Thicket Plant Ecology: An Introduction'', Third Edition (Temple Big Thicket Series #5). University of North Texas Press. Denton, Texas. 152 pp. Texas Parks and Wildlife. Ecological Mapping systems of Texas: West Gulf Coastal Plain Seepage Swamp and Baygall'. Retrieved 7 July 2020 They are often covered in heath or heather shrubs rooted in the sphagnum moss and peat. The gradual accumulation of decayed plant material in a bog functions as a carbon sink. Bogs occur where the water at the ground surface is acidic and low in nutrients. In contrast to fens, they derive most of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Pressure
Ground pressure is the pressure exerted on the ground by the tires or tracks of a motorized vehicle, and is one measure of its potential mobility, especially over soft ground. It also applies to the feet of a walking person or machine. Ground pressure is measured in pascals (Pa) which corresponds to the United States customary units unit of pounds per square inch (psi). Average ground pressure can be calculated using the standard formula for average pressure: ''P'' = ''F''/''A''. In an idealized case, i.e. a static, uniform net force normal to level ground, this is simply the object's weight divided by contact area. The ground pressure of motorized vehicles is often compared to the ground pressure of a human foot, which can be 60 – 80 kPa while walking or as much as 13 MPa for a person in spike heels. Increasing the size of the contact area on the ground (the ''footprint'') in relation to the weight decreases the ground pressure. Ground pressure of 14 kPa (2 psi) or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Night Skiing
Night skiing is the sport of skiing or snowboarding after sundown, offered at many ski resorts and mountains. There are usually floodlights – including LED lamps – along the piste which allow for better visibility. It typically begins after a resort's skiing-day ends (sunset), and ends between 8:00 PM and 10:30 PM. Night skiing offers a few last runs for busy skiers who don't have time to ski during daylight hours. Trails at night are normally not as busy as during the day, but there are usually fewer runs available. The trails also tend to be icier than during the day, due to melting and refreezing. While the invention of night skiing is often credited to Webb Moffet in 1945 who used to own Snoqualmie Summit Ski Area near Seattle, Washington, night skiing actually originated with Clare Bousquet at Bousquet Ski Area in Pittsfield, Massachusetts in 1936 thanks to a local partnership with General Electric. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ski Resort
A ski resort is a resort developed for skiing, snowboarding, and other winter sports. In Europe, most ski resorts are towns or villages in or adjacent to a ski area – a mountainous area with pistes (ski trails) and a ski lift system. In North America, it is more common for ski areas to exist well away from towns, so ski resorts usually are destination resorts, often purpose-built and self-contained, where skiing is the main activity. Ski resort Ski resorts are located on both Northern and Southern Hemispheres on all continents except Antarctica. They typically are located on mountains, as they require a large slope. They also need to receive sufficient snow (at least in combination with artificial snowmaking, unless the resort uses dry ski slopes). High concentrations of ski resorts are located in the Alps, Scandinavia, western and eastern North America, and Japan. There are also ski resorts in the Andes, scattered across central Asia, and in Australia and New Zealand. Ext ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winch
A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable"). In its simplest form, it consists of a spool (or drum) attached to a hand crank. Traditionally, winches on ships accumulated wire or rope on the drum; those that do not accumulate, and instead pass on the wire/rope (see yacht photo above), are called capstans. Despite this, sailboat capstans are most often referred to as winches. Winches are the basis of such machines as tow trucks, steam shovels and elevators. More complex designs have gear assemblies and can be powered by electric, hydraulic, pneumatic or internal combustion drives. It might include a solenoid brake and/or a Mechanical brake stretch wrapper, mechanical brake or ratchet (device), ratchet and pawl which prevents it unwinding unless the pawl is retracted. The rope may be stored on the winch. When trimming a line on a sailboat, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centre Of Gravity
In physics, the center of mass of a distribution of mass in space (sometimes referred to as the balance point) is the unique point where the weighted relative position of the distributed mass sums to zero. This is the point to which a force may be applied to cause a linear acceleration without an angular acceleration. Calculations in mechanics are often simplified when formulated with respect to the center of mass. It is a hypothetical point where the entire mass of an object may be assumed to be concentrated to visualise its motion. In other words, the center of mass is the particle equivalent of a given object for application of Newton's laws of motion. In the case of a single rigid body, the center of mass is fixed in relation to the body, and if the body has uniform density, it will be located at the centroid. The center of mass may be located outside the physical body, as is sometimes the case for hollow or open-shaped objects, such as a horseshoe. In the case of a distri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thiokol
Thiokol (variously Thiokol Chemical Corporation(/Company), Morton Thiokol Inc., Cordant Technologies Inc., Thiokol Propulsion, AIC Group, ATK Thiokol, ATK Launch Systems Group; finally Orbital ATK before becoming part of Northrop Grumman) was an American corporation concerned initially with rubber and related chemicals, and later with rocket and missile propulsion systems. Its name is a portmanteau of the Greek words for sulfur (θεῖον ''"theion"'') and glue (κόλλα ''"kolla"''), an allusion to the company's initial product, Thiokol polymer. The Thiokol Chemical Company was founded in 1929. Its initial business was a range of synthetic rubber and polymer sealants. Thiokol was a major supplier of liquid polymer sealants during World War II. When scientists at the Jet Propulsion Laboratory discovered that Thiokol's polymers made ideal binders for solid rocket fuels, Thiokol moved into the new field, opening laboratories at Elkton, Maryland, and later production facilitie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snow Trac
The Snow Trac is a small personal Snowcat that is roughly the size of a modern compact car. Origins and description In 1954, Lars Larsson, the chief design engineer for a Swedish farm equipment company, AB Westeråsmaskiner, decided to develop a tracked vehicle to take him and his brother on fishing trips in the winter. The company put his snow vehicle into production in 1957. It uses a unique steering mechanism called a variator that allows the steering of a tracked vehicle to use a traditional automotive steering wheel instead of levers. The Aktiv Fischer Snow Trac is a tracked vehicle, which was manufactured from 1957 to 1981 in Sweden. It runs on two rubber tracks powered by a Volkswagen flat 4 industrial boxer style engine and is suitable for both deep snow and soft surface use. The engine developed about 40 horsepower, but that varied from year to year as the earlier models developed 36 hp, and later models developed 54 hp. With a length of approximately 12' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tucker Sno-Cat
The Tucker Sno-Cat is a family of tracked vehicles for snow conditions, manufactured in Medford, Oregon by the company of the same name. Different models have been used for expeditions in the Arctic and the Antarctic during the second half of the 20th century. It differs from other truck-sized snow vehicles, commonly known as snowcats, by its use of four independently mounted sets of tracks. Early models While the majority of Tucker Sno-Cats utilized four sets of tracks, a few experimental models and early production models used two sets of tracks. Initially Tucker Sno-Cats employed two front-mounted steering skis and two sets of tracks mounted to the rear. However, there are at least three production models that only employed dual tracks—the small 222 Tucker Kitten, the 322, and the 323 models were all two-track Tucker Sno-Cats with a conventional front engine design. There are at least two variants of the Tucker Kitten, some have square corner doors while others have ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logan Machine Company
Logan Manufacturing Company was a US manufacturer of snowcats that ceased operation in 2000. LMC is both the tradename (brand name) and an acronym. The company's earliest history started with a prototype tracked snow vehicle built in 1948 by engineers Roy France and Emmett Devine, of the Utah Scientific Foundation at Utah State University in Logan, Utah. After building a few more prototypes, series production began in 1950 under the Frandee Sno-Shu brand. In 1961, Utah Scientific Foundation sold the snow vehicle business to the Thiokol Corporation, with the Frandee Sno-Shu name being retired in favor of the Thiokol brand on the company's products. Manufacturing moved out of a workshop on the Utah State University campus to a new facility in Logan. During the mid 1970s, Thiokol adopted a new strategy of divesting ancillary businesses in order to focus on its core rocket and missile operations, and the snow cat business division was earmarked for sale. In 1978, John DeLorean ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
