含RDX的硝胺丁羟推进剂能量特性研究

Energy Characteristic of Nitramine HTPB Propellant Containing RDX as Oxidizer

采用最小自由能平衡流法对RDX/AP/Al/HTPB推进剂能量特性进行了理论计算。通过BSF165mm和BSF315mm发动机点火试验,研究了RDX含量、燃烧室压强对RDX/AP/Al/HTPB推进剂能量特性的影响规律。根据理论计算和发动机试验结果,对配方进行了优化设计,与某型号760mm全尺寸发动机的实测结果对比,其实测比冲高达2428.1N·s·kg-1(pc=6.86MPa),验证了RDX的加入对RDX/AP/Al/HTPB推进剂比冲有较突出贡献。

In order to investigate the energy property of RDX/AP/Al/HTPB propellant, theoretical calculation is conducted. By the ignition experiment of BSF 165 mm and BSF 315 mm motor,We summarize the regularity of energy property with the change of RDX content in propellant and chamber pressure of motor. The optimum formulating is designed according to the results of theoretical calculation and experiment.The comparative tests by 760 mm motor have further confirmed the contribution of RDX in specific impulse, and the actual specific impulse is 2 428.1 N·s·kg-1(pc=6.86 MPa) of 760 mm motor.