The system designer amongst other design considerations must worry about the hazard technical areas such as sympathetic detonation, cook-off, bullet and fragment impact, response to shaped charge jets, and response to electrostatic discharge as derived from the safety requirements. The scientist/technologist tends to think along lines of mechanistic understanding of shock-to-detonation transition (SDT), deflagrationto-detonation transition (DDT), terminal ballistics, penetration mechanics, ignition and combustion, breakdown voltages, etc. Obviously all of these people have a piece of the puzzle, with linkages between these pieces. This has been illustrated in Fig. 1 as a three-dimensional matrix. Shown are some of the items mentioned above. The various boxes within the matrix involve the concerns of the munitions user/buyer, the munitions designer, and the scientist/technologist. For example, the munitions user wants a missile having a motor, warhead, etc., and he wants it to be insensitive to sympathetic detonation, fragment/bullet impact, etc. The designer, because he will be queried by the buyer/user, is concerned how his components and subcomponents will respond. For example he may be concerned with how the motor case, liner, and propellant will react to various fragments and bullets, and may turn to the scientist/technologist for help.
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