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

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.

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