Artificial Ski Slope
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A dry ski slope or artificial ski slope is a
ski slope A ski is a narrow strip of semi-rigid material worn underfoot to glide over snow. Substantially longer than wide and characteristically employed in pairs, skis are attached to ski boots with ski bindings, with either a free, lockable, or partial ...
that mimics the attributes of
snow Snow comprises individual ice crystals that grow while suspended in the atmosphere—usually within clouds—and then fall, accumulating on the ground where they undergo further changes. It consists of frozen crystalline water throughout ...
using materials that are stable at room
temperature Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have relied o ...
, to enable people to
ski A ski is a narrow strip of semi-rigid material worn underfoot to glide over snow. Substantially longer than wide and characteristically employed in pairs, skis are attached to ski boots with ski bindings, with either a free, lockable, or partial ...
,
snowboard Snowboards are boards where the user places both feet, usually secured, to the same board. The board itself is wider than most skis, with the ability to glide on snow."snowboarding." Dictionary.com Unabridged (v 1.1). Random House, Inc. 17 Mar ...
or snow tube in places where natural, snow-covered slopes are inconvenient or unavailable. Although commonly known as "dry ski slopes", many slopes are lubricated using a mist or jet system to increase speed and prevent damage to equipment from friction heat build-up. As a general rule, they are found predominantly in the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...
and the
Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...
as other European countries tend to have ready access to real snow fields, as does North America in the winter.


Materials


Early materials

A variety of materials can be found on dry ski slopes. Early efforts to mimic snow involved laying extruded
plastic Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adaptab ...
tiles with upward spikes in an attempt to provide grip. These were unpopular as they provided little grip and turning capability and the experience was similar to skiing across
ice Ice is water frozen into a solid state, typically forming at or below temperatures of 0 degrees Celsius or Depending on the presence of impurities such as particles of soil or bubbles of air, it can appear transparent or a more or less opaq ...
. However, in present day, many ski slopes (both indoor and outdoor) continue to use plastic, injection moulded tiles. Quality has improved and many dry ski slopes in the Netherlands use these tiles for training and championships.


Brush materials

The next stage in dry ski slope development came with the brush industry. The most common material is Dendix which is a by-product of brush manufacturing and is similar to a short-
hair Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and f ...
ed
brush A brush is a common tool with bristles, wire or other filaments. It generally consists of a handle or block to which filaments are affixed in either a parallel or perpendicular orientation, depending on the way the brush is to be gripped durin ...
with the
bristle A bristle is a stiff hair or feather (natural or artificial), either on an animal, such as a pig, a plant, or on a tool such as a brush or broom. Synthetic types Synthetic materials such as nylon are also used to make bristles in items such as br ...
s sticking upwards. Dendix is manufactured in
Chepstow Chepstow ( cy, Cas-gwent) is a town and community in Monmouthshire, Wales, adjoining the border with Gloucestershire, England. It is located on the tidal River Wye, about above its confluence with the River Severn, and adjoining the western ...
, however it can be found on slopes throughout the world. It is arranged in a
hexagon In geometry, a hexagon (from Ancient Greek, Greek , , meaning "six", and , , meaning "corner, angle") is a six-sided polygon. The total of the internal angles of any simple polygon, simple (non-self-intersecting) hexagon is 720°. Regular hexa ...
al pattern of approximately strips of bristles in a hexagon. Although it was a significant advancement from previous surfaces, concern over damage to slope users (it provides little or no impact protection to a slope user when falling) and ski or
snowboard Snowboards are boards where the user places both feet, usually secured, to the same board. The board itself is wider than most skis, with the ability to glide on snow."snowboarding." Dictionary.com Unabridged (v 1.1). Random House, Inc. 17 Mar ...
damage due to friction meant litigation for slopes using it was a constant threat. Nowadays
water Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a ...
is often sprayed onto the surface of the dendix to
lubricate Lubrication is the process or technique of using a lubricant to reduce friction and wear and tear in a contact between two surfaces. The study of lubrication is a discipline in the field of tribology. Lubrication mechanisms such as fluid-lubrica ...
it and increase speed; however, higher
insurance Insurance is a means of protection from financial loss in which, in exchange for a fee, a party agrees to compensate another party in the event of a certain loss, damage, or injury. It is a form of risk management, primarily used to hedge ...
premiums cause many slope operators to look for safer alternatives. Despite more recent materials, Dendix remains the most popular plastic slope material in use.


Needle mushroom dry ski mat

In
Chengdu Chengdu (, ; Simplified Chinese characters, simplified Chinese: 成都; pinyin: ''Chéngdū''; Sichuanese dialects, Sichuanese pronunciation: , Standard Chinese pronunciation: ), Chinese postal romanization, alternatively Romanization of Chi ...
, China, a dry ski mat called a
needle mushroom dry ski mat
has been in use since 2010. It is made of a plastic and aluminum base with many soybean-like beads on the surface. There are more than 20 slopes of needle mushroom dry ski mat, and new dry ski slopes are created each year.


Recent materials

The most recent development has seen a crop of materials providing both impact protection and slope lubrication as well as the ability to perform turns, erect jumps, rails and quarterpipes and provide a ride that is closer to the feel of real snow
Neveplast
is one of these, a newer material whose use is becoming even more common. This new type of mat, which uses a concentric arrangement of conical stems, is marketed for downhill, snowboarding and cross country skiing. Neveplast claims to be certified as having the same coefficient of friction between the surface and the ski as snow, allowing the skier a good side grip, with the same skis used on the snow, and without the need for water. The Neveplast cooling hole has a comparable diameter to the F.I.S. slalom pole standards used for training and competition in both slalom and giant slalom. Neveplast is also used for school camps. This surface is modular and flexible, used frequently also for Urban freestyle parks. A German provider that guarantees year round skiing i
Mr. Snow
The company does not only produce dry slopes for downhill skiing, snowboarding and cross country skiing but also provides tubing tracks and rental opportunities for events. The material of Mr. Snow is claimed to have very good sliding capacities, is predictable in all climates and does not harm the ski or sliding surface. Mr. Snow works without the use of
silicone A silicone or polysiloxane is a polymer made up of siloxane (−R2Si−O−SiR2−, where R = organic group). They are typically colorless oils or rubber-like substances. Silicones are used in sealants, adhesives, lubricants, medicine, cooking ...
which is not necessary to achieve good sliding characteristics. The snow carpet evidently has no negative environmental impact. So the mats can remain on the surface 365 days a year. But it is also possible to remove them very quickly if it is required. Temporary using can be realized with the 20 sqm modules. Another very common mat is Snowflex, manufactured near
Huddersfield Huddersfield is a market town in the Kirklees district in West Yorkshire, England. It is the administrative centre and largest settlement in the Kirklees district. The town is in the foothills of the Pennines. The River Holme's confluence into ...
,
West Yorkshire West Yorkshire is a metropolitan and ceremonial county in the Yorkshire and Humber Region of England. It is an inland and upland county having eastward-draining valleys while taking in the moors of the Pennines. West Yorkshire came into exi ...
in England by Briton Engineering Developments Limited. Others include Perma-snow by
John Nike Leonard John Nike OBE DL (5 July 1935 – 25 December 2016) was an English businessman, and a Bracknell-based leisure and hotel entrepreneur. He was best known for being the owner of the eponymous John Nike Leisuresport chain of dry ski slope ...
Leisure/ Techmat 2000, also in the UK and Astroride by NorCal Extreme Sports in the United States. Snowflex and Perma-snow are both white in colour, although the former has been produced in a darker green (such as in Kendal Ski Club in
Cumbria Cumbria ( ) is a ceremonial and non-metropolitan county in North West England, bordering Scotland. The county and Cumbria County Council, its local government, came into existence in 1974 after the passage of the Local Government Act 1972. Cumb ...
, England) to comply with planning requirements. There is no indication from NorCal Extreme Sports that AstroRide has been commercially tested to any great extent. The latest arrival is from UK company Proslope who produce a matting with variable filament lengths to emulate the gradual edge grip and release of snow. As with some other surfaces, the system is coloured white, is modular, and works both with and without a misting system.


Ski and board preparation

Dry slope users often improve the performance of their equipment by using the hardest grade of
ski wax Ski wax is a material applied to the bottom of snow runners, including skis, snowboards, and toboggans, to improve their coefficient of friction performance under varying snow conditions. The two main types of wax used on skis are glide waxes and ...
. The wax wears off quickly, however, and must be renewed after one or two sessions. At least one company makes a hard wax that is intended for use on dry slopes. Some users apply aerosol furniture polish or other can-based products to the bases of their skis or boards as the silicone oil it contains is reputed to reduce friction. Other substances, such as
dishwashing liquid Dishwashing liquid (or washing-up liquid in British English), also known as dishwashing soap, dish detergent, and dish soap is a detergent used to assist in dishwashing. It is usually a highly-foaming mixture of surfactants with low skin irr ...
, are sometimes used.


See also

*
Skiing Skiing is the use of skis to glide on snow. Variations of purpose include basic transport, a recreational activity, or a competitive winter sport. Many types of competitive skiing events are recognized by the International Olympic Committee (IO ...
*
Snowboarding Snowboarding is a recreational and competitive activity that involves descending a snow-covered surface while standing on a snowboard that is almost always attached to a rider's feet. It features in the Winter Olympic Games and Winter Paralympi ...
* Indoor ski slopes * Ski simulators * Snowmaking


References


External links

* {{DEFAULTSORT:Dry Ski Slope Artificial ski resorts Ski areas and resorts Snowboarding