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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 variation of the technique is used to construct snow runways in Antarctica. 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 dies ... [...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 Wānaka, New Zealand. In Colorado there has been a recent trend for defunct resorts such as Squaw Pass (now Echo M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fatbike
A fatbike (also called fat bike, fat tire, fat-tire bike, or snow bike) is an off-road bicycle built to accommodate oversized tyres, typically or larger and rims or wider, designed for low ground pressure to allow riding on soft, unstable terrain, such as snow, sand, bogs and mud. Fatbikes are built around frames with wide forks and stays to accommodate the space required to fit these wide rims and tires. The wide tires can be used with inflation pressures as low as to allow for a smooth ride over rough obstacles. A rating of is suitable for most riders. Fatbikes were developed for use in snow or sand, but are capable of traversing diverse terrain types including snow, sand, desert, bogs, mud, pavement, or traditional mountain biking trails. History Early versions of fat-tired bikes were probably built as long ago as the early 1900s but modern versions were not developed until the 1980s. An early example is the custom three-wheeled in-line longtail-style bike with fat tires ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Side-by-side (vehicle)
A side-by-side vehicle (SxS or SSV), is a utility vehicle with a minimum of two seats positioned side by side and enclosed within a roll cage structure. They have a minimum of four wheels (or continuous tracks) and are operated by foot controls and a steering wheel. Depending on use and application they can also be called a utility task vehicle, utility terrain vehicle (UTV), recreational off-highway vehicle (ROV), or multipurpose off-highway utility vehicle (MOHUV). Side-by-sides may be included in the category of all-terrain vehicles (ATVs), but do not include vehicles with saddle-seats that are operated using handlebar-type controls that are the conventional meaning of that term. Definition and standards The American National Standards Institute (ANSI) publishes two standards for side-by-sides. ANSI/OPEI B71.9-2016 sets standards for ''multipurpose off-highway utility vehicles'' (MOHUV) specifically intended for utility use which are intended to transport persons and cargo, ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biogas
Biogas is a gaseous renewable energy source produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, Wastewater treatment, wastewater, and food waste. Biogas is produced by anaerobic digestion with anaerobic organisms or methanogens inside an Anaerobic digestion, anaerobic digester, biodigester or a bioreactor. The gas composition is primarily methane () and carbon dioxide () and may have small amounts of hydrogen sulfide (), moisture and siloxanes. The methane can be combusted or oxidized with oxygen. This energy release allows biogas to be used as a fuel; it can be used in fuel cells and for heating purpose, such as in cooking. It can also be used in a gas engine to convert the energy in the gas into electricity and heat. After removal of carbon dioxide and hydrogen sulfide it can be compressed natural gas, compressed in the same way as natural gas and used to power Alternative fuel vehicle, motor vehicles. In the Un ... [...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 bayhead 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. A bog usually is found at a freshwater ... [...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. Pressure is measured in the SI unit of pascals (Pa). Average ground pressure can be calculated using the standard formula for average pressure: ''P'' = ''F''/''A''. In an idealised 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 with 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 unit ground pressure. Ground pressure of 14 kPa (2 psi) or less is recommended for fragile ecosystems like marshes. Decreasing the ... [...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 areas. There are floodlights – with metal halide, LED or magnetic induction lamps – along the piste which allow for better visibility. The night skiing session typically begins around sunset, and ends between 8:00 PM and 10:30 PM. Night skiing offers reduced price access versus 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. Starting in 1997 Planai in Austria has held a World Cup slalom competition at night. A few ski resorts offer opportunities for night skiing wearing personal headlamps, or by the light of the full moon. History Processions of skiers holding torches, lanterns or flares while skiing down a slope at night has been a scheduled event of winter festivals such as the Nordic Games since at least 1903. The dram ... [...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 in both 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, Scandinavian Peninsula, Scandinavia, western and eastern List of ski areas and resorts in North America, North America, and List of ski areas and resorts in Japan, Japan. There are also ski res ... [...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 (physics), tension of a rope or wire rope (also called "cable" or "wire cable"). In its simplest form, it consists of a Bobbin, spool (or drum) attached to a hand crank (mechanism), 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 Capstan_(nautical), 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 b ... [...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 barycenter or balance point) is the unique point at any given time where the weighted relative position of the distributed mass sums to zero. For a rigid body containing its center of mass, 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 cas ... [...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 r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
