Non nitroglycerin-containing composite-modified double-base propellant

Claim 1

A crosslinked composite-modified double-base propellant composition comprising a casting powder portion and a casting solvent portion, said casting powder portion comprising about 72.0 weight percent of said propellant composition and said casting solvent portion comprising about 28.0 weight percent of said propellant composition, said casting powder portion comprised in part by weight of ingredients as follows: ______________________________________ nitrocellulose (12.5% nitrogen) 16.6 carboranylmethyl propionate 4.7 triacetin 17.5 2-nitrodiphenylamine 1.1 resorcinol 0.7 ammonium perchlorate (1 μm) 32.8 aluminum (20 μm) 7.2 aluminum staple (whiskers) 2.7 glycidyl azide polymer formed from hydrolysis 16.0 of glycidyl chloride followed by reaction with sodium azide ______________________________________ , and said casting solvent portion comprised in parts by weight of ingredients as follows: ______________________________________ glycidyl azide 45.8 triacetin 52.7 hexane diisocyanate 0.50 triphenylbismuthine 0.07 ______________________________________ , said crosslinked composite-modified double-base propellant composition characterized by having greater safety in handling, reduced sensitivity to detonation, higher burning rate, higher specific impulse, and improved mechanical properties as compared with a like composition containing nitroglycerin in said casting powder portion and in said casting solvent portion in equivalent molar weight amounts to said glycidyl azide polymer.