Equivalent Of The Fuze Rain Target Simulation And Its Storage Test Methods

This paper analyzes the characteristics of rainfield and raindrops, gives -formulae to calculate falling velocity of raindrops, studies the frequency of raindrops hitting detonating area of fuzes head on ballistic trajectory based on the theory of exterior ballistics and uses statistical theory to study methods of rainfield simulation. Considering actual demands by rain insensitive device designing and rain insensitive performance appraising, this paper also studies equivalent methods among the process of fuzes impacting raindrops and that of fuzes impacting target. According to momentum equivalent method, corresponding equivalent principles have been worked out and derive formulae to calculate the thickness of equivalent targets of different materials, then in term of these formulae the thickness of equivalent targets in different status are figured out and listed in the tables. Finally demanded by testing the process of raindrops impacting the rain insensitive device and. the projectile impacting target, this paper designes one set of memorized measuring system, which is used inside projectile. Tried by simulative impacting experiment, the feasibility of memorized measurement technology is validated. At the same .time, the acceleration-time curves are tested when projectile impacts the aluminum board.