High performance fast burning solid propellant
AssigneeThiokol Corporation
InventorsJohnny R. Mackey, Earl T. Foster
Life of this patent
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Abstract
1. A solid composite propellant consisting of 7% to 15% of a carboxyl-terminated butadiene polymer binder, 66% to 82% of ammonium perchlorate, greater than 0% to 18% of aluminum and greater than 0% to 8% of n-butyl ferrocene as a burning rate catalyst, the ingredient amounts being in weight per cent, and wherein the particle size of the ammonium perchlorate is greater than 0 but less than 3 microns in size.
Claims4
A solid composite propellant consisting of 7% to 15% of a carboxyl-terminated butadiene polymer binder, 66% to 82% of ammonium perchlorate, greater than 0% to 18% of aluminum and greater than 0% to 8% of n-butyl ferrocene as a burning rate catalyst, the ingredient amounts being in weight percent, and wherein the particle size of the ammonium perchlorate is greater than 0 but less than 3 microns in size.
In a method for increasing the burning rate of a composite solid propellant comprising the mixture of a carboxy-terminated butadiene polymer binder, a fuel, n-butyl ferrocene as a burning rate catalyst and an oxidizer, the improvement comprising using an oxidizer that has been ground to a particle size greater than 0 but less than 3 microns.
A method for producing a high burning rate composite solid propellant, consisting of milling a mixture of carboxyl-terminated butadiene polymer and ammonium perchlorate through a 3-roll dispersion mill until the ammonium perchlorate in the mixture has achieved a particle size greater than 0 but less than 3 microns, adding aluminum and n-butyl ferrocene as a liquid burning rate catalyst, blending the mixture to yield a homogeneous propellant, and then curing said propellant.
Dependencies are inferred from the claim text.