Rocket Penetration Fuze Safety And Arming And Control Circuit Design

The penetration fuze of a rocket projectile is the research object, the S&A system and control circuit of the fuze are studied in this paper. The S&A system of the fuze includes a mechanical safe device and electrical safe part, auto-adapted runaway escapement is the main part of the mechanical safty, it guarantees the fuze security in usual and works reliable after the projectile launched. The electrical safty realized by an electrical-drived pin controlled by the arming circuit, delayed by the monolithic integrated circuit, the monolithic integrated circuit sends out arming signal when the timer arrives at the set time, then the electrical-drived pin arming immediately. The slide flame-proof device is adoptd in this fuze, the flame-proof device campaigns in place and aligns the detonation sequence under the function of its spring after both mechanical safty and electrical safty are relieved. Electric firing is used in this fuze, when the projectile triggers to the predetermined burst, the control circuit sends out the ignition signal to the ignition circuit, the ignition circuit immediately fire the primer.Numerical simulation analysis of the projectile penetrating different concrete targets in a certain speed is studied with ANSYS/LS-DYNA software, the corresponding penetration overload characteristic and data are obtained, which provides rationale for the fuze's design. According to the launching characteristic of the rocket projectile, the arming device and flame-proof device are designed. Prototype's kinematics data is obtained from the dynamics simulation with the ADAMS dynamics simulation software, which provides a theory basis for the fuze's revision and optimization. Finally, the control circuit of this fuze is designed.The results and analysis methods of this paper can be applyed in other similar designs and analysis.