Inflatable bags

Break up of drops accelerated by air blasts (including shock waves) can occur by an inverted bag mechanism similar to that described in Section A above, for = UApd /a between about 16 and 10 (HI, H2, H4, L6). Reichman and Temkin (R7) give a detailed description of four stages of bag-type breakup. Under some circumstances, deformation preceding breakup appears more like a parasol than an inflating bag (SI2). The distance x moved by the drop is given approximately by... 

Take the PTFE bag and squeeze the neck open. Use a fine stream of air to slightly inflate the bag (as described in step 9 of Part A) so that the walls sit apart. Stand the partially inflated bag upright in a small beaker. 

Dunnage bag An inflatable bag intended to fill empty spaces between articles of cargo or articles of cargo and the wall of the vehicle. 

Flexible plastic sample bags are generally limited to vapor phase samples that can be analyzed within a short time after sample collectioa This limitation is due to potential losses of analytes by sitrface adsorption and surface chemical reactions. Transportation of inflated bags over long distances to a remote laboratory is cumbersome, and can result in total losses of samples due to pimctures and other accidents. Plastic bags are used in some laboratory operations— for example, to collect automobile exhaust and vaporized fuel—and for samples that can be conveniently transported to a laboratory. 

A type of vehicle restraint system that consists of inflatable bags monnted in the interior of a vehicle that automatically inflate npon a collision to protect the occn-pants from injury. They are designed for frontal impact crashes. This type of crash accounts for more than half of all passenger vehicle occupant deaths. Air bags are designed to limit head and chest injnries. They are considered only supplemental to safety belts they do not replace them. 

The final wound structure is removed from the winding machine, and the mandrel/ workpiece is placed in an oven for curing. Various mandrels are used and can be made of hard chrome plated and polished ground steel, which may be of a segmented collapsible construction, but must have no concave curvature. If the part has complex geometry, then fusible low melting point alloys, a soluble plaster that can be removed with hot water after curing, or an inflatable bag can be used. In some instances, such as compressed natural gas (CNG) tanks, the mandrel is left in position as a liner. 

Air bag n. An automatically inflating bag in front of riders in an automobile to protect them from pitching forward in an accident. End use for manufactured textile fibers. 

Another recent scheme involved the transportation of water by sea from areas of plentiful supply in floating inflatable bags—called the Medusa bag—to areas where water is in short supply. This is considered feasible because freshwater is less dense than seawater and will float on the ocean surface. 

The air bag industry has become one of the principal users of pyrotechnic compositions in the world. Most of the current air bag systems are based on the thermal decomposition of sodium azide, NaN, to rapidly generate a large volume of nitrogen gas, N2. Air bag systems must function immediately (within 50 ms) upon impact, and must quickly deploy a pulse of reasonably cool, nontoxic, unreactive gas to inflate the protective cushion for the driver or passenger. These formulations incorporate an oxidizer such as iron oxide to convert the atomic sodium that initially forms into sodium oxide, Na20. Equation 1 represents the reaction. 

Another name for the inflatable diaphragm which takes the place of the curing bag in the automatic curing of pneumatic tyres in a diaphragm press. Blanc Fixe... 

When an automobile collision activates an air bag, sodium azide, NaN3(g), decomposes to form sodium, Na(s), and nitrogen gas, N2(g). (The gas inflates the bag.) This chemical reaction occurs almost instantaneously. It inflates the air bag quickly enough to cushion a driver s impact in a collision. 

On the other hand, the reaction of iron with oxygen to form rust proceeds quite slowly. Most Canadians know that the combination of road salt and wet snow somewhat increases the rate of the reaction. Even so, it takes several years for a significant amount of rust to form on the body of a car. This is a good thing for car owners—if rusting occurred as fast as the reaction in an inflating air bag, cars would flake to pieces in seconds. 

The airbag system includes an ignition device that quickly generates a large volume of gas that inflates the airbag itself The latter is a bag of synthetic textile possibly coated with silicone. Its properties are ... 

This completely automated spectrum analysis procedure represents the final element in our effort to reduce to routine practice the quantitative analysis of similarly constituted gaseous samples by FTIR. It has seen wide and successful application within our laboratory, having been the principle analytic method for two extensive hydrocarbon species-specific auto exhaust catalyst efficiency studies, a comprehensive study of the gases emitted by passive-restraint air bag inflators, several controlled furnace atmosphere analyses, several stationary source stack emission checks and several health-related ambient atmosphere checks. 

Figure 6. Analysis of effluents from an air bag inflator system...

Azides are explosive, releasing nitrogen gas. That s why they re used to inflate car air bags. 

The airbags in automobiles contain hematite which serves as a catalyst for the rapid release of N2 which inflates the bags (G. Buxbaum, pers. comm.). 

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