Aircraft evacuation slide inflator using a catalytically decomposed gas
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United States of America Patent
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Issued Date -
Jan 15, 2004
app pub date -
Jul 12, 2002
filing date -
Jul 12, 2002
priority date (Note) -
Abandoned
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Abstract
An inflation device for an aircraft emergency evacuation slide or other inflatable device produces a greater number of moles of gas than the number of moles of gas stored. This is accomplished by selecting the stored inflation gas to be one of a family of gases capable of undergoing a thermal decomposition, such as nitrous oxide, such that two moles of nitrous oxide are decomposed to form two moles of diatomic nitrogen and a mole of diatomic oxygen. Because the universal gas constant is the same for all gases, the three moles of nitrogen and oxygen produced by the decomposition of two moles of nitrous oxide occupy 50% more volume than the two moles of nitrous oxide would have occupied at the same temperature and pressure. By decomposing the stored nitrous oxide, the inflator is capable of inflating a device that is 50% larger than would be possible using un-decomposed gas.
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