The Research Of Fuze Environment Analysis And Measurement And Safety System Design For Mortar Fuze

Fuze safety is always one of the key characters of fuzes during its design, manufacture and use phases. For the fuze safety system status and its development requirements, this dissertation gives the analyses of the fuze environments, the characters of the fuze environments information, the selection methods of environments for fuzes design. The representative exterior trajectory environments and out-bore environment are presented and investigated, the correlative tests have been done. The frame of electro-mechanical safety and arming device (S&A) is established, and the electro-mechanical S&A for the mortar shell fuze is designed at the end of the paper.The analysis of the fuze environments is according to its affecting on the situations of fuze. Three kinds of situations of fuze are given and the relationship between the environments and the conversion of fuze S&A situations are put forward, and two kinds of environments are defined: S environment and Q environment. These environments and their characters during the fuze be dealed with, be loaded and in used are analyzed.The concept of maturity safety system is bring forward for high safety of fuzes, and fuze environment is expended to the inner and outer factors which affecting fuze safety situation. The characters of fuze environments information and the relationships between them are the main factors which affect the safety performance of fuzes. In this dissertation several characters of environments are discussed: measurability/ represent ability, time/ space character, energy intensity/ energy density character, frequency/ period character and differentia between them. Following the discussion the methods of environments selection for fuze safety system design are given. The principles of fault-safety and its design for fuze safety system are presented and discussed.The test of the environments is the precondition of using them. The sense and measurement theory and methods for the exterior trajectory environment parameters of fuze are researched. The research is emphasis on the pressure, temperature and rotation parameters during the fuze flight. The sense...