Experimental Study of Ablative Materials by Oxyacetylene Flame Flow System

Abstract

A missile motor has precision design and complicated components, responsible to propel the missile forward to reach an expected range. The motor must be protected by the inhibitor, which limits the high temperature from the burning of propellant to the generator to ensure safety of shell. The solid rocket propellant grain burns in the parallel layer according to a certain rule. Recently, NBR (Nitrile Butadiene Rubber) 、 EPDM(Ethylene-Propylene-Diene Monomer), Silicon Rubber and Polyisoprene are usually applied to the inhibitor matrix in solid propellant. The inhibitor can protect the external steel shell, and remains at a temperature of 300-400K under severe conditions of high temperatures of 2300-3700 K inside, free from any damage arising from internal high temperature. The oxyacetylene ablation performance test system is simple, economic and useful to estimate the thermal process of ablative materials. Based on this method, the relative thermal insulation effectiveness during the early stage of material research is determined.

The Study of Different Area Weight of Fibers as Ablative Polymer-Based Composite for Solid Rocket Motor

“…6 shows a schematic of the oxyacetylene ablation tester and specimen under the test. This kind of test is widely used for the characterization of the ablation resistance of materials [11][12][13]. An Instron 8801 universal testing machine was used to perform the tensile tests in accordance with ASTM D638 standard.…”

Studies on Ablative Performance of Silicone Low-Density Ablative Material

“…OFT gives the insight of ablation rate and ablative effectiveness. The oxyacetylene flame test is simple, cost-effective, and useful to estimate the thermal processes of ablative materials [10][11]. Whereas TGA of materials allow us to calculate hypothetically the time required for degradation of materials at desired temperature which leads to calculate kinetic parameters.…”