固体火箭发动机总体设计集成系统的研究与开发

Performance and structure conceptual overall design of solid rocket motor is the first stage in the design work. It has a deep influence on the designing roadmap. However，the existing integrated systems face problems that function of software is hard to customize，algorithm modules lacks of collaboration and data structure remains non-hierarchical. To solve these problems，first of all，using the idea of the dynamic combination of algorithm modules，an open algorithm module interface specification system was designed. Secondly，following the principle of decoupled functions，independent modules and reusable algorithms，30 algorithm modules and 2 external interfaces were developed，including thermodynamic calculation，system parameter optimization，design target allocation and grain design，etc. based on the solid rocket motor design theories. Thirdly，the integration and collaboration of the algorithm modules were realized using the parallel round-robin calculation method. The decoupling of algorithm modules significantly accelerated the computation. Finally，based on a four-layer system architecture consisting of the algorithm layer，application layer，user interface layer and presentation layer，the integration design software system SRM-PASCOD applicable to the engineering field was constructed. The system was used to replicate the design process of the third stage FG-02 solid rocket motor of Long March 1，where a data dictionary containing over 400 pieces of data was extracted. Comparing the results with the actual ones，the performance and size deviation are less than 10% and meet the engineering needs. The flexible combination of algorithm modules enables the software to be applied to design a tactical missile dual-thrust long-tail nozzle motor which verifies the practicality，customizability and extensibility of the software. The design method，algorithms library and integration specifications developed can flexibly support the performance and structure conceptual overall design of solid rocket motors. The hierarchical data dictionary of the motor formed during the design process provides data support for engineering applications.