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Daisy Cutter (fuse)
A daisy cutter is a type of Fuse (explosives), fuse designed to Detonator, detonate an aerial bomb at or above ground level. The fuse itself is a long probe affixed to the weapon's nose, which detonates the bomb if it touches the ground or any solid object. Purpose The purpose for a daisy-cutter fuse is primarily to maximize blast damage on the surface of a target. A bomb with a conventional fuse will often be driven deeply into the ground by the force of its impact, limiting the range of its blast. A bomb with a daisy-cutter fuse will detonate before it has a chance to penetrate the ground, allowing its energy to spread over a larger area. For this reason daisy-cutter fuses are often used to clear foliage and vegetation, such as for the purpose of creating landing zones for helicopters. First mention The first reference to a "daisy-cutter type of bomb" is found in the memoir of Lieutenant Jack Wilkinson in describing the 1918 attack on the Royal Air Force airfield at Bertangles. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air America (airline)
Air America was an American passenger and cargo airline established in 1946 and covertly owned and operated by the Central Intelligence Agency (CIA) from 1950 to 1976. It supplied and supported covert operations in Southeast Asia during the Vietnam War, including providing support for drug smuggling in Laos.'' The Politics of Heroin: CIA Complicity in the Global Drug Trade'', by McCoy, with Cathleen B. Read and Leonard P. Adams II, 2003, p. 385 Early history: Civil Air Transport (CAT) CAT was created by Claire Chennault and Whiting Willauer in 1946 as Chinese National Relief and Rehabilitation Administration (CNRRA) Air Transport to airlift supplies and food into war-ravaged China. It was soon pressed into service to support Chiang Kai-shek and his Kuomintang forces in the civil war between them and the communists under Mao Zedong. Many of its first pilots were veterans of Chennault's World War II combat groups, popularly known as Flying Tigers. By 1950, following the defeat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iraq War
{{Infobox military conflict , conflict = Iraq War {{Nobold, {{lang, ar, حرب العراق (Arabic) {{Nobold, {{lang, ku, شەڕی عێراق (Kurdish languages, Kurdish) , partof = the Iraq conflict (2003–present), Iraq conflict and the War on terror , image = Iraq War montage.png , image_size = 300px , caption = Clockwise from top: US troops at Uday Hussein, Uday and Qusay Hussein's hideout; insurgents in northern Iraq; the Firdos Square statue destruction, toppling of the Saddam Hussein statue in Firdos Square , date = {{ubl, {{Start and end dates, 2003, 3, 20, 2011, 12, 18, df=yes({{Age in years, months and days, 2003, 03, 19, 2011, 12, 18) , place = Iraq , result = * 2003 invasion of Iraq, Invasion and History of Iraq (2003–11), occupation of Iraq * Overthrow of Arab Socialist Ba'ath Party – Iraq Region, Ba'ath Party government * Execution of Saddam Hussein in 2006 * Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shock And Awe
Shock and awe (technically known as rapid dominance) is a military strategy based on the use of overwhelming power and spectacular displays of force to paralyze the enemy's perception of the battlefield and destroy their will to fight. Though the concept has a variety of historical precedents, the doctrine was explained by Harlan K. Ullman and James P. Wade in 1996 and was developed specifically for application by the US military by the National Defense University of the United States. Doctrine of rapid dominance Rapid dominance is defined by its authors, Harlan K. Ullman and James P. Wade, as attempting Further, rapid dominance will, according to Ullman and Wade, Introducing the doctrine in a report to the United States' National Defense University in 1996, Ullman and Wade describe it as an attempt to develop a post-Cold War military doctrine for the United States. Rapid dominance and shock and awe, they write, may become a "revolutionary change" as the United States mil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel
Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons, and rockets. Iron is the base metal of steel. Depending on the temperature, it can take two crystalline forms (allotropic forms): body-centred cubic and face-centred cubic. The interaction of the allotropes of iron with the alloying elements, primarily carbon, gives steel and cast iron their range of unique properties. In pure iron, the crystal structure has relatively little resistance to the iron atoms slipping past one another, and so pure iron is quite ductile, or soft and easily formed. In steel, small amounts of carbon, other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drag (physics)
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers (or surfaces) or between a fluid and a solid surface. Unlike other resistive forces, such as dry friction, which are nearly independent of velocity, the drag force depends on velocity. Drag force is proportional to the velocity for low-speed flow and the squared velocity for high speed flow, where the distinction between low and high speed is measured by the Reynolds number. Even though the ultimate cause of drag is viscous friction, turbulent drag is independent of viscosity. Drag forces always tend to decrease fluid velocity relative to the solid object in the fluid's path. Examples Examples of drag include the component of the net aerodynamic or hydrodynamic force acting opposite to the di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Pipes
Plumbing is any system that conveys fluids for a wide range of applications. Plumbing uses pipes, valves, plumbing fixtures, tanks, and other apparatuses to convey fluids. Heating and cooling (HVAC), waste removal, and potable water delivery are among the most common uses for plumbing, but it is not limited to these applications. The word derives from the Latin for lead, ''plumbum'', as the first effective pipes used in the Roman era were lead pipes. In the developed world, plumbing infrastructure is critical to public health and sanitation. Boilermakers and pipefitters are not plumbers although they work with piping as part of their trade and their work can include some plumbing. History Plumbing originated during ancient civilizations, as they developed public baths and needed to provide potable water and wastewater removal for larger numbers of people. The Mesopotamians introduced the world to clay sewer pipes around 4000 BCE, with the earliest examples found in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BLU-82
The BLU-82B/C-130 weapon system, known under program "Commando Vault" and nicknamed " Daisy Cutter" in Vietnam for its ability to flatten a section of forest into a helicopter landing zone, is an American conventional bomb, delivered from either a C-130 or MC-130 transport aircraft or a CH-54 heavy-lift "Skycrane" helicopter from the 1st Air Cavalry. A total of 225 were constructed. It was successfully used during military operations in Vietnam, the Gulf War and Afghanistan. The BLU-82 was retired in 2008 and replaced with the more powerful GBU-43/B MOAB. Overview The designation "BLU" stands for Bomb Live Unit, as opposed to "BDU" (Bomb Dummy Units) used for practice. Originally designed to create an instant clearing in the jungles of Vietnam, the BLU-82B/C-130 was test-dropped there from a CH-54 Tarhe "Flying crane" helicopter. Later it was used in Afghanistan as an anti-personnel weapon and as an intimidation weapon because of its very large blast radius (variously reporte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gun Barrel
A gun barrel is a crucial part of gun-type weapons such as small firearms, artillery pieces, and air guns. It is the straight shooting tube, usually made of rigid high-strength metal, through which a contained rapid expansion of high-pressure gas(es) is used to propel a projectile out of the front end ( muzzle) at a high velocity. The hollow interior of the barrel is called the bore, and the diameter of the bore is called its caliber, usually measured in inches or millimetres. The first firearms were made at a time when metallurgy was not advanced enough to cast tubes capable of withstanding the explosive forces of early cannons, so the pipe (often built from staves of metal) needed to be braced periodically along its length for structural reinforcement, producing an appearance somewhat reminiscent of storage barrels being stacked together, hence the English name.''A History of Warfare'' - Keegan, John, Vintage 1993. History Gun barrels are usually metal. However, the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Welding
Welding is a fabrication (metal), fabrication process that joins materials, usually metals or thermoplastics, by using high heat to melt the parts together and allowing them to cool, causing Fusion welding, fusion. Welding is distinct from lower temperature techniques such as brazing and soldering, which do not melting, melt the base metal (parent metal). In addition to melting the base metal, a filler material is typically added to the joint to form a pool of molten material (the weld pool) that cools to form a joint that, based on weld configuration (butt, full penetration, fillet, etc.), can be stronger than the base material. Pressure may also be used in conjunction with heat or by itself to produce a weld. Welding also requires a form of shield to protect the filler metals or melted metals from being contaminated or Oxidation, oxidized. Many different energy sources can be used for welding, including a gas flame (chemical), an electric arc (electrical), a laser, an electron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louang Phrabang
Luang Phabang, ( Lao: ຫລວງພະບາງ/ ຫຼວງພະບາງ) or ''Louangphabang'' (pronounced ), commonly transliterated into Western languages from the pre-1975 Lao spelling ຫຼວງພຣະບາງ (ຣ = silent r) as Luang Prabang, literally meaning " Royal Buddha Image", is a city in north central Laos, consisting of 58 adjacent villages, of which 33 comprise the UNESCO ''Town Of Luang Prabang'' World Heritage Site.Application of Information and Communication Technology to Promote Sustainable Development A Case Study: Town of Luang Prabang, Lao PDR (pdf) Tokyo Institute of Technology, Retrieved June 15, 2016 It was listed in 1995 for unique and "remarkably" well preserved architectur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Lao Air Force
The Royal Lao Air Force (french: Aviation Royale Laotiènne – AVRL), best known to the Americans by its English acronym RLAF, was the air force component of the Royal Lao Armed Forces (FAR), the official military of the Royal Lao Government and the Kingdom of Laos during the Laotian Civil War between 1960 and 1975. The original Lao military aviation establishment was the 'Laotian Aviation' (), established by the French on 28 January 1955 as a small aerial observation and transport arm of the then National Lao Army (ANL). As the French withdrew from Indochina, the Lao Aviation was supported by American aid. With the addition of offensive capabilities, it morphed into the Royal Lao Air Force (RLAF). The RLAF struggled into existence in the face of its enemies, while dealing with its own internal divisions as well as bucking a tide of pilot and aircraft losses. As it expanded from its 1960 foundation, and as the fighting power of the Royal Lao Army was diminished and broken durin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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