In the 1970s, the United States, along with several other countries, banned the use of CFCs as aerosol propellants. |
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By the mid-1970s, the United States government banned the use of CFCs as aerosol propellants but it resisted a total ban for all industries. |
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Smokeless propellants are expensive and not often used in making fireworks. |
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Liquid propellants clearly have the edge over gunpowder for military applications such as this. |
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And we'll be doing some testing, including small-scale weapons testing, just to see how these propellants react in a gun environment. |
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Most launch vehicles use liquid propellants, but some use motors with solid fuels. |
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The Titan uses Aerojet-General LR87 and LR91 engines burning liquid hypergolic propellants that ignite spontaneously on contact. |
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Of course, the scanner could only detect metals, energy sources and chemical compounds that could be combined into propellants and explosives. |
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When smokeless propellants were safely ensconced in society, what did they do with the.45 Colt? |
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Black powder loading, though simple, requires different techniques than those used with smokeless propellants. |
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Mr Edwards explained that deodorants and other aerosols contain propellants, like butane, to dry the particles. |
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The first rockets used solid propellants, such as black powder, but they were very inefficient. |
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To equal black powder ballistics and pressures in the.45 Colt requires tiny little charges of most smokeless propellants. |
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This hydrogen could be harvested and used for propellants or combined with oxygen to make water. |
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Nitromethane, a stabilizer added to many halogenated solvents and aerosol propellants. |
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The two ships would dock in orbit, and propellants would transfer into the lunar craft. |
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Chlorofluorocarbons were developed and used as refrigerants, blowing agents for polyurethane foam, and propellants in spray cans. |
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They have uses as propellants in aerosol spray cans, refrigerant gases, and foaming agents for blown plastics. |
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Slower burning powders tend to deliver better accuracy than faster burning propellants, even when velocities are identical. |
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Perchlorate is a waterborne contaminant left over from propellants and rocket fuels. |
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Three of the four stages exhausted their solid propellants through a single adjustable nozzle which guided the missile along its flight path. |
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Rocket propellants come in two parts, fuel and oxidizer, which work together to keep an engine burning. |
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A pedant or two might ask if you really mean rocket propellants when you say rocket fuel. |
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As single base powders, they also exhibit a lower caloric value as compared to spherical propellants. |
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Instead, the focus was to be on loads featuring some of the newer propellants. |
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Modern, smokeless propellants date from 1846 when both nitrocellulose and nitroglycerin first emerged from European laboratories. |
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One of its four strap-on motors, powered by liquid propellants, did not build up enough thrust. |
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Liquid helium from a tank in the lunar module was used to assure a steady flow of propellants to the descent engine. |
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Aerosol propellants contain flammable and nerve-damaging ingredients as well as tiny particles that can lodge in your lungs. |
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Gas propellants in aerosol products like hairsprays and air fresheners are also inhaled. |
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These substances, also known as freons, were once used extensively as coolant fluids in refrigerators and air conditioners, and as propellants in aerosol cans. |
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Many centuries ago the Chinese first employed crude rockets using solidified propellants to scare their enemies with the resulting loud noises and flashing overhead lights. |
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When the propellants combine within the engine, they produce thrust. |
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This very simple rocket engine, using storable propellants, has amply demonstrated its robustness and reliability. |
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Isobutane is also used in certain pest control products as propellants, however, these pest control products do not contain 1,3-butadiene. |
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Rockets that use solid propellants, such as the space shuttle's solid rocket boosters, arrive with the propellant already stored inside them in a puttylike form. |
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The column balances largely on the forelegs and is pushed from behind by the hindlegs, which are the main propellants. |
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Booster systems rerouted propellants to the seven other engines. |
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The parent companies are aiming to create a leading propellants and explosives company in Europe, drawing on advanced technologies and in-depth knowledge of this business. |
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The finding would be consistent with the plant's stated production capabilities in the field of basic raw materials for explosives and propellants. |
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By definition, explosive ordnance is any munitions, weapon delivery system, or ordnance item that contains explosives, propellants, and chemical agents. |
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Today, almost all aerosol cans contain alternative propellants, such as liquefied petroleum gas, which do not pose as serious a threat to the environment. |
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New case compositions ensure good combustibility and no residues even under extreme conditions while limiting migration of nitric ester from gun propellants. |
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Currently, launch operators can prevent nanosats carrying hazardous propellants that might be used to power them to another orbit. |
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I quit using products with any combination of a petroleum base, aerosol propellants, or heavy scents. |
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This course discusses the characteristics and design considerations of solid rocket fuels and gun propellants. |
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They have been used as refrigerants, aerosol propellants, cleaning solvents, as well as in the manufacture of plastic foam. |
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This is a rocket that uses ionised propellants accelerated by magnetic fields. |
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The spacecraft's mass at launch was some 13 tonnes, most of which was the propellants unsymmetrical dimethylhydrazine and dinitrogen tetroxide. |
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The product contains: organic solvents, abrasive and propellants. |
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Passivation requires the removal of all forms of stored energy, including residual propellants and compressed fluids and the discharge of electrical storage devices. |
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Uses include refrigerants, blowing agents, propellants in medicinal applications and degreasing solvents. |
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However, the loss of pressure of aerosol dispensers using compressed gas propellants at the end of their life-time typically leads to a less efficient yield of contents. |
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The second phase allowed for the construction and test of prototype flight pumps for liquid oxygen and kerosene propellants. |
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Its two nitration facilities were built in 1948 and 1954, enabling production of propellants for missiles and rockets. |
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These regulations, made under the Environmental Contaminants Act, prohibited the import, manufacture, processing, offering for sale or use of chlorofluorocarbons as propellants in hair sprays, deodorants, and antiperspirant. |
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As a nonreactive gas, nitrogen is employed to make foamed or expanded rubber, plastics, and elastomers, to serve as a propellant gas for aerosol cans, and to pressurize liquid propellants for reaction jets. |
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The pumps raise the pressure above the operating pressure of the engine, and the propellants are then injected into the engine in a manner that assures atomization and rapid mixing. |
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The X-15 add-on aircraft has been designed to simulate rocket propulsion and its related fuel systems including, in the case of the X-15, the use of three different propellants and their pressurization methods. |
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It had already been demonstrated in the mid-1970s that CFCs posed a threat to the global ozonosphere, and in 1978 the use of CFCs as propellants in aerosol cans was banned in the United States. |
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Subsequent studies added gas analysers to the sensor complement to detect materials for chemically powered lasers and the type of rocket propellants used by the satellite under investigation. |
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They are used in various sectors and applications such as refrigerants in refrigeration, air conditioning and heat pump equipment, as blowing agents for foams, as fire extinguishants, aerosol propellants and solvents. |
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Older types such as China's widely exported Silkworm missiles require lengthy mixing and loading of volatile liquid propellants, a process which can be spotted from planes or satellites. |
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Finally, three other additives are proposed as propellants. |
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Consequently, the use of compressed gases as propellants should be encouraged by increasing the maximum internal pressure of aerosol dispensers, to the extent that it is safe for the consumer. |
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Air bag inflaters contain propellants, which are explosives that emit gas and to lea inti fill up the bags. |
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The Federal Council also turned down a request by the Swiss Federal Propellant Plant at Wimmis on 5 November 1963 to grant South Africa licensing rights to produce propellants for 30-mm and 35-mm antiaircraft ammunition. |
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Energetics are energy-releasing chemical materials, like explosives, propellants and pyrotechnics. |
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It is also used with nitrocellulose in some propellants, especially for rockets and missiles, and it is employed as a vasodilator in the easing of cardiac pain. |
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The RL10C-1 engine delivers 22,890 pounds of thrust to power the upper stage, using cryogenic liquid hydrogen and liquid oxygen propellants during its operation. |
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Cryogenic denotes a rocket stage that is much more efficient, providing more thrust for every kg of propellant compared to stages that run on solid and liquid propellants. |
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She wrote her master's thesis on solid rocket propellants during a 10-month research stay at the Mendeleev University of Chemical Technologies in Moscow, Russia. |
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