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国内近年来开展的战术固体火箭单室双推力发动机的研制工作,已经取得了较好的成果。单室双推力发动机具有两种燃速不同推进剂呈前后串联排列、两段装药在助推段工作期间同时燃烧后,续航段继续工作。因此,可以获得两级推力。发动机的两级推力是采用燃速不同推进剂与改变燃面相结合的方法来实现的(即调节Ⅰ、Ⅱ级装药量)为确保发动机装药结构完整性和发动机工作可靠性,从装药工艺上提出如下要求:
The development of tactical solid rocket single-chamber double-thrust engines developed in China in recent years has achieved good results. Single-chamber double-thrust engine with two kinds of burning rate of different propellant was arranged in series before and after the two charge in the boost section of the work at the same time burning, the continued life section. Therefore, two levels of thrust can be obtained. The two-stage thrust of the engine is achieved by combining different burning rate propellant and burning face (ie, adjusting the charge level I and II). In order to ensure the integrity of engine charge structure and the reliability of engine operation, The process proposed the following requirements: