Large Caliber Artillery Fuze Mrf Research For Insurance Institutions

Magneto Rheological Fluid delay arming device is a kind of fuze safety device, which the main working principle is Magneto Rheological effect. The special properties of magnetic rheological liquid, including solid state shear strength and fluidity of liquid phase, were used in weapon system, providing precise and controllable storage time, high safety, reliable and flexible effect.Based on the existing research and problems, the work include the following aspects:Based on the summary and the analysis of existing study, a series of test was carried out, such as high and low temperature performance test, rotation test, arming delay time test, reliability test and shooting test. By analyzing the result, we can comprehend the consistency of mechanism and design theory, reliability and affect of the lower chamber pressure and complex stress conditions on the mechanism.To better meet the agency delayed release under the conditions of the insurance reliability and storage stability requirements,a new type of magnetorheological fluid was prepared by adjusting the base carrier liquid, suspended particles and additives. By reducing the possibility of the magnetic rheological fluid due to settlement of gravitational field and centrifugal field, the magnetorheological fluid in the solid-liquid two-phase close to ideal uniformly dispersed state.The piston, centrifugal sub and centrifugal spring were optimized, which affect the discharge time sensitively, experimental results showed that the improvement of components was feasible.According to the test data, the bleeder time formula is further improved. the magneto-rheological fluid in the hydraulic cylinder leakage flow velocity distribution was analyzed, and friction before quantization formula derivation was ignored. Compared theoretical calculation results with test data, a solution was proposed to determine the new formula according to causes of errors.Finally, the work of this dissertation was concluded. In addition, the potential issues of this research were pointed out.