Solid Rocket Motor Cad System And Software Development

In this paper, solid rocket motor design theory is combined with computer-aided design method and a solid rocket motor computer aided design (RECAD) system has been set up, which is composed of three child system which are calculation analysis, database management system and engineering drawing. The child system of calculation analysis includes the optimization design of total parameters of solid rocket motor, the calculation of internal trajectory, the calculation of thermodynamic parameters, the limited element analysis for stress of motor shell, the calculation of structure characteristic parameters, the calculation of particle external trajectory, the design and calculation of the ignition device. Database management system consists of some standard material database, standard parameter database and solid rocket motor product database. A complete management system is founded, which support to modify, look up, append and delete these database. Engineering drawing system can draw two dimension curve graphs, main detail drawing and assembly drawing. The curve of internal trajectory and dynamic simulation of particle external trajectory. The detail drawing includes the graph of chamber, grain design, connection body, nozzle, some standard part. This system software have good interface for the user. This system software can finish the user's design through user input some basic datum, and it support the user modify his design by modify the basic datum. An example of solid rocket motor design proved that the RECAD system software is effective and convenient in solid rocket motor design.