Enhancement of Regression Rate in Hybrid Rockets

Abstract

This study has identified a potential HTPB based propellant that gives a very good density specific impulse but yet does not burn like a solid propellant. Due to low solid loading in this propellant, pre-curing of the HTPB and IPDI mixture is a necessity to get uniform density across the length of the grain. Nea rly 7 hours of pre-curing gave the best results in terms of uniformity of the propellant co mposition. The paper also discusses the enhancement of regression rate of this propellant w ith known burn rate modifiers like iron oxide and copper chromite.