Magnetorheological In Fuze Extension Lifting Of Applied Research In Insurance Institutions

Magnetorheological fluid delay arming device is a new kind of fuze delay arming device. Using of the MR effect, with high safety and high arming reliability, its delay arming time can be adjusted, it's structure is simple. It provide a new means for the fuze safety and arming system.The followings were investigated by the theoretical analysis, numerical simulation and test verification.1. Based on previous studies, a new kind of fuze delay arming device was designed;2. The delay arming time model of fuze safety and arming device was set up according to MRF fluid dynamics theory, then the formula of delay arming time was given. In addition, the flow field numerical simulation was conducted to confirm the formula;3. By analyzing the composition of MRF to the impact on sedimentation, according to the requirements to MRF and the characteristics of this device, some measures were put forward to improve the stability of MRF. According to these measures, a new fluid was designed by improving the commercial MRF; experimental results showed that the new MRF was applicable for the fuze delay arming device.4. The static test were designed to study the safety and arming performance of MRF delay arming device; testing system was designed to study the relation between the projectile rotating speed, the discharge aperture, the parameters of MRF,the temperature and delay arming time; In addition, dynamic test program were designed and the dynamic test were conducted. The results showed that:the safety, reliability and delay arming distance of the design met the design requirements; the magnetorheological technology being used for fuze delay arming device was feasible.Finally, the work of this dissertation was concluded. The innovations and contributions of this work were introduced. In addition, the potential issues of this research were pointed out.