CBR方法在液体火箭发动机推力室设计中的应用  

Application of case-based reasoning method in design of thrust chamber of liquid rocket engine

作　　者：史锻 胡小平[1] 于萌[1] 王正凯[1] 

机构地区：[1]国防科学技术大学航天科学与工程学院,湖南长沙410073

出　　处：《火箭推进》2015年第3期39-45,共7页Journal of Rocket Propulsion

摘　　要：液体火箭发动机推力室的设计和制造是一项极其复杂的系统工程,其性能参数、结构形式、组织方式、材料等的选择尤其依赖于设计人员丰富的经验和成功研制型号积累的设计知识。为实现对以往设计经验和知识的继承,在推力室的设计中引入了基于案例推理(CBR,case-based reasoning)的方法。基于案例推理的方法作为人工智能领域的一个重要分支,是指将过去对典型问题的求解事例,按一定的组织方式存储起来,积累成案例库,当用户求解某一新问题时,利用该案例库来指导进行求解的一种策略。根据液体火箭发动机推力室的设计内容、设计流程以及设计特点,得出推力室性能参数关系图,并基于案例推理的方法提出了推力室的案例表示方法和案例调整方案,并应用该调整技术实现了具体的案例调整。The design and manufacture of liquid rocket engine thrust chamber is a very complicated system engineering. The performance parameters, structure form, organization mode and selection of materials, in particular, rely on the designer＇s experience and design knowledge of successful development model. To improve the reusability of existing experience in the design of thrust chamber of liquid rocket engine, the case-based reasoning method was utilized in the design. Case-based reasoning method is an important branch in the field of artificial intelligence, with which the examples to solve typical problems in the past are stored according to a certain way. When a user wants to solve a new problem, the case library is used to solve the problem. The relation schema for thrust chamber performance parameters was obtained according to the design content, design process and design characteristics of a liquid rocket engine thrust chamber. The case representation method and case adjustment scheme of the thrust chamber are proposed on the basis of the case-based reasoning method. The case adjustment was realized by this technology.

关 键 词：液体火箭发动机推力室 基于案例的推理 设计 

分 类 号：V434-34[航空宇航科学与技术—航空宇航推进理论与工程]