| abstract |
A gas generant charge comprises a heterogeneous mixture of between about 80 and about 95 wt % of a first gas generant composition 1) and between about 5 and about 20 wt % of a second gas generant composition 2), based on the total weight of 1) plus 2). The first gas generant composition 1) comprises between about 20 and about 40 wt % fuel A) and between about 20 and about 60 wt % oxidizer B). Between about 50 and about 85 wt % of the fuel A) is a triazole or tetrazole compound A1), and between about 15 and about 50 wt % of the fuel is, a water-soluble fuel A2). At least about 20 wt % of the oxidizer B), up to 100%, a transition metal oxide B1); balance of the oxidizer is selected from the group B2) consisting of alkali and/or alkaline earth metal nitrates, chlorates or perchlorates. The second gas generant composition 2) comprises between about 30 and about 65 wt % of a fuel C) which is an organic compound containing only the elements carbon, hydrogen, and oxygen, the oxygen content being between about 35 and about 65 wt % of the organic compound, and an between about 35 and about 70 wt % of an oxidizer D) which is selected from the group consisting of alkali metal chlorates, alkali metal perchlorates, and mixtures thereof. The mixed generant charge produces less undesirable gases than the first gas generant composition alone and less particulate matter than the second gas generant composition alone. |