|
Tracked Articulated Vehicle
A tracked articulated vehicle or articulated tracked vehicle (abbreviated as ATV. but not to be confused with all-terrain vehicle), is a variation of a continuous track vehicle that consists of two cars, each with their own track, most commonly with an actuated linkage in between. This configuration allows an articulated tracked vehicle to turn by articulating the swivel joint in between the two vehicles (also known as articulated steering), as opposed to using differential steering to move one track faster than the other. Tracked articulated vehicles differ from most other articulated vehicles in that in a tracked articulated vehicle both wagons are powered and that removing the coupling in between the units would render them inoperable. Operating principle Just like conventional dual-tracked vehicles, the purpose of an articulated tracked vehicle is to better navigate off-road terrain, in particular snow, mud and other weak soil, by using long articulated tracks instead of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hagglunds BV-206 Bandvagn Zijaanzicht
BAE Systems AB is a Swedish defence company and a subsidiary of BAE Systems Land & Armaments, whose ultimate parent is the British defence contractor BAE Systems. The company is a holding company for Land Systems Hägglunds AB and BAE Systems Bofors AB, and has no products of its own. Subsidiaries BAE Systems Hägglunds ''AB Hägglund & Söner'' was founded in 1899 by Johan Hägglund in Gullänget, Örnsköldsvik, Sweden. The company was divided in 1988, one part being ''Hägglunds Vehicle AB'', the military vehicles business. In October 1997 the British company Alvis plc acquired Hägglunds Vehicle AB to form Alvis Hägglunds AB. Alvis expanded its military vehicle business in 1998 with the purchase of GKN's armoured vehicle division in 1998 and Vickers Defence in 2002 to form Alvis Vickers. In September 2004 BAE Systems acquired Alvis Vickers and merged it with its RO Defence ordnance division to form BAE Systems Land Systems. Hägglunds was renamed Land Systems Hägglunds. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mortar Carrier
A mortar carrier, or self-propelled mortar, is a self-propelled artillery piece in which a mortar is the primary weapon. Simpler vehicles carry a standard infantry mortar while in more complex vehicles the mortar is fully integrated into the vehicle and cannot be dismounted from the vehicle. Mortar carriers cannot be fired while on the move and some must be dismounted to fire. Evolution The mortar carrier has its genesis in the general mechanisation and motorisation of infantry in the years leading up to World War II. To move an infantry mortar and its crew various methods were developed, for example mounting the mortar on a wheeled carriage for towing behind a light vehicle, attaching the mortar and its permanently fixed baseplate to the rear of a vehicle — the entire assembly hinging from the horizontal for travel and to the vertical to fire, simply transporting the disassembled mortar (tube, baseplate and bipod) its crew and mortar bombs by truck or half-track. Provisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tractor Expedición Polar Argentina 1965, Flag Day 2006, Rosario, Argentina
A tractor is an engineering vehicle specifically designed to deliver a high tractive effort (or torque) at slow speeds, for the purposes of hauling a Trailer (vehicle), trailer or machinery such as that used in agriculture, mining or construction. Most commonly, the term is used to describe a farm vehicle that provides the power and traction to mechanization, mechanize agricultural tasks, especially (and originally) tillage, and now many more. List of agricultural machinery, Agricultural implements may be towed behind or mounted on the tractor, and the tractor may also provide a source of power if the implement is mechanised. Etymology The word ''tractor'' was taken from Latin, being the Agent (grammar), agent noun of ''trahere'' "to pull". The first recorded use of the word meaning "an engine or vehicle for pulling wagons or plows" occurred in 1896, from the earlier term "traction engine, traction motor" (1859). National variations In the United Kingdom, UK, Republic of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil Erosion
Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, and animals (including humans). In accordance with these agents, erosion is sometimes divided into water erosion, glacial erosion, snow erosion, wind (aeolean) erosion, zoogenic erosion and anthropogenic erosion such as tillage erosion. Soil erosion may be a slow process that continues relatively unnoticed, or it may occur at an alarming rate causing a serious loss of topsoil. The loss of soil from farmland may be reflected in reduced crop production potential, lower surface water quality and damaged drainage networks. Soil erosion could also cause sinkholes. Human activities have increased by 10–50 times the rate at which erosion is occurring world-wide. Excessive (or accelerated) erosion causes both "on-site" and "off-site" problems. On- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. The exploitation of these deposits for raw material is based on the economic viability of investing in the equipment, labor, and energy required to extract, refine and transport the materials found at the mine to manufacturers who can use the material. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water. Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petroleum Industry
The petroleum industry, also known as the oil industry or the oil patch, includes the global processes of exploration, extraction, refining, transportation (often by oil tankers and pipelines), and marketing of petroleum products. The largest volume products of the industry are fuel oil and gasoline (petrol). Petroleum is also the raw material for many chemical products, including pharmaceuticals, solvents, fertilizers, pesticides, synthetic fragrances, and plastics. The industry is usually divided into three major components: upstream, midstream, and downstream. Upstream regards exploration and extraction of crude oil, midstream encompasses transportation and storage of crude, and downstream concerns refining crude oil into various end products. Petroleum is vital to many industries, and is necessary for the maintenance of industrial civilization in its current configuration, making it a critical concern for many nations. Oil accounts for a large percentage of the wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logging
Logging is the process of cutting, processing, and moving trees to a location for transport. It may include skidding, on-site processing, and loading of trees or logs onto trucks or skeleton cars. Logging is the beginning of a supply chain that provides raw material for many products societies worldwide use for housing, construction, energy, and consumer paper products. Logging systems are also used to manage forests, reduce the risk of wildfires, and restore ecosystem functions, though their efficiency for these purposes has been challenged. In forestry, the term logging is sometimes used narrowly to describe the logistics of moving wood from the stump to somewhere outside the forest, usually a sawmill or a lumber yard. In common usage, however, the term may cover a range of forestry or silviculture activities. Illegal logging refers to the harvesting, transportation, purchase, or sale of timber in violation of laws. The harvesting procedure itself may be illegal, includin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Warfare Training Center
The Mountain Warfare Training Center (MWTC) is a United States Marine Corps installation located in Pickel Meadows on California State Route 108 at above sea level in the Toiyabe National Forest, northwest of Bridgeport, California. The training center exists to train units in complex compartmented terrain. Mission The Marine Corps' Mountain Warfare Training Center, as a major subordinate element of Marine Air Ground Task Force Training Command, and with support from Marine Corps Installations West, conducts unit and individual training courses to prepare USMC, Joint, and Allied Forces for operations in mountainous, high altitude, and cold weather environments in support of the Regional Combatant Commanders. Additionally, MWTC provides support to Marine Corps Combat Development Command (MCCDC); Training and Education Command; Marine Corps Systems Command; and other USMC and Department of Defense (DOD) agencies engaged in the development of war-fighting doctrine and specialize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Implementation Force
The Implementation Force (IFOR) was a NATO-led multinational peace enforcement force in Bosnia and Herzegovina under a one-year mandate from 20 December 1995 to 20 December 1996 under the codename ''Operation Joint Endeavour''. Background NATO was responsible to the United Nations (UN) for carrying out the Dayton Peace Accords. The Dayton Peace Accords were started on 22 November 1995 by the presidents of Bosnia, Croatia, and Serbia, on behalf of Serbia and the Bosnian Serb Republic. The actual signing happened in Paris on 14 December 1995. The peace accords contained a General Framework Agreement and eleven supporting annexes with maps. The accords had three major goals: ending of hostilities, authorization of military and civilian program going into effect, and the establishment of a central Bosnian government while excluding individuals that serve sentences or under indictment by the International War Crimes Tribunals from taking part in the running of the government. IF ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Marine Corps
The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through combined arms, implementing its own infantry, artillery, aerial, and special operations forces. The U.S. Marine Corps is one of the eight uniformed services of the United States. The Marine Corps has been part of the U.S. Department of the Navy since 30 June 1834 with its sister service, the United States Navy. The USMC operates installations on land and aboard sea-going amphibious warfare ships around the world. Additionally, several of the Marines' tactical aviation squadrons, primarily Marine Fighter Attack squadrons, are also embedded in Navy carrier air wings and operate from the aircraft carriers. The history of the Marine Corps began when two battalions of Continental Marines were formed on 10 November 1775 in Philadelphia as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
War In Afghanistan (2001–present)
War in Afghanistan, Afghan war, or Afghan civil war may refer to: *Conquest of Afghanistan by Alexander the Great (330 BC – 327 BC) *Muslim conquests of Afghanistan (637–709) *Conquest of Afghanistan by the Mongol Empire (13th century), see also Mongol invasion of Central Asia (1216–1222) *Mughal conquests in Afghanistan (1526) *Afghan Civil War (1863–1869), a civil war between Sher Ali Khan and Mohammad Afzal Khan's faction after the death of Dost Mohammad Khan * Anglo−Afghan Wars (first involvement of the British Empire in Afghanistan via the British Raj) ** First Anglo−Afghan War (1839–1842) ** Second Anglo−Afghan War (1878–1880) ** Third Anglo−Afghan War (1919) *Panjdeh incident (1885), first major incursion into Afghanistan by the Russian Empire during the Great Game (1830–1907) with the United Kingdom of Britain and Ireland * First Afghan Civil War (1928–1929), revolts by the Shinwari and the Saqqawists, the latter of whom managed to take over Kabul for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marines
Marines, or naval infantry, are typically a military force trained to operate in littoral zones in support of naval operations. Historically, tasks undertaken by marines have included helping maintain discipline and order aboard the ship (reflecting the pressed nature of the ship's company and the risk of mutiny), the boarding of vessels during combat or capture of prize ships, and providing manpower for raiding ashore in support of the naval objectives. In most countries, the marines are an integral part of that state's navy. The exact term "marine" does not exist in many languages other than English. In French-speaking countries, two terms exist which could be translated as "marine", but do not translate exactly: and ; similar pseudo-translations exist elsewhere, e.g. in Portuguese (). The word ''marine'' means "navy" in many European languages such as Dutch, French, German, Italian and Norwegian. History In the earliest day of naval warfare, there was little distin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
