少烟丁羟推进剂高压性能的实验研究

AN EXPERIMENTAL INVESTIGATION ON PROPERTIES OF REDUCED-SMOKE HTPB PROPELLANT AT HIGH PRESSURE

关键词:  端羟基聚丁二烯推进剂  硝胺推进剂  推进剂燃速  能量性能  微波衰减

Key words:  Hydroxy terminated polybutadience propellant  Nitramine propellant  Propellant burning rate  Energetic property  Microwave attenuation

摘要:

对少烟丁羟复合推进剂在高压下的燃烧性能、能量特性和微波衰减特性进行了实验研究。研究得出：少烟丁羟复合推进剂在１７～１８ＭＰａ以上压强时存在燃速突变现象，但不会引起发动机工作任强失控，而且通过调整弹道改良剂可以降低推进剂高压压强指数；少烟丁羟复合推进剂高压海平面实际比冲可以突破２４５２Ｎ·ｓ／ｋｇ；该推进剂的微波衰减强度只相当于普通双基推进剂的水平，比（有烟）丁羟复合推进剂和改性双基推进剂低得多。

Abstract:

An experimental investigation on combustion properties, energy characteristics and microwave attenuation characteristics of reduced-smoke HTPB composite propellant at high pressure is carried out in motors. It is concluded that although the burning rate of reduced-smoke HTPB composite propellant abruptly changes at high pressure of 17～18MPa, but it will not cause operating pressure out of control, and the high pressure exponent can well reduced by adjusting ballistic modifier, the reduced-smoke HTPB composite propellant has good energy release at high pressure, to over 2452 N·s/kg of spacife impule at sea level, and its microwave attenuation intensity is only equal to that of common double base propellant, lower than of HTPB composite propellant (smoke) and modified double base propellant.