Digital Twin of Solid Rocket Motor, Problem and Challenge

The technology level of solid rocket motor as the heart of missile directly affects the development level of missile weapon equipment in China. For a long time, the design of solid rocket motor is mainly based on experience and semi-experience, there are problems such as simulation and test separation, and design data can not be fully applied, which seriously restricts the improvement of design level of solid rocket motor. Therefore, in recent years, domestic and foreign researchers have been committed to introducing advanced information technology into the field of solid rocket motor design, thus breaking through the design bottleneck of solid rocket motor. Through the close combination and mutual mapping of physical space and virtual space, Digital Twins can solve the above problems. Based on the conceptual connotation of digital twins, this paper studies the application of digital twins in the life cycle of solid engine design, and focuses on the analysis of the top-level architecture of digital twins and the method of data transfer in digital twins. The key problems and possible solutions are discussed. The conclusion is helpful to promote the transformation of solid rocket engine design mode and improve the intelligence and informatization of solid rocket engine design.