A PROCESSING METHOD FOR INCREASING PROPELLANT BURNING RATE

Abstract

The effectiveness of the burning rate accelerator, iron oxide (Fe2O3), is enhanced, and a markedly improvement in the mechanical properties of a propellant composition are simultaneously achieved as a result of grinding a composite propellant paste in a roller mill instead of in a conventional sigma blade propellant mixer. The propellant paste is composed of a hydroxyl-terminated polybutadiene prepolymer, fluid-energy mill-ground ammonium perchlorate, dioctyl adipate, aluminum oxide, isophthaloyl bis-1-(2-methylaziridine), and iron oxide. The final product has a higher stress capability, higher strain capability, higher modulus, and higher gel fraction, and a burning rate that is about 80% higher as compared with sigma blade propellant ground and mixed propellant.

Source: Google Patents

35 USC §181 Secrecy Order

Inventor

• 1DAVID C. SAYLES

Sensitive facility: Huntsville AL (NASA/Army)