Fuze Safe State To Restore The Functional Analysis And Its Implementation

Safety is an important performance for fuzes. For the needs of higher safety and less misdamage, the state alterable function which makes fuzes change from armed state into safety state is researched. The function of fuze safety state restoration and its principles are discussed, the key technologies are analyzed, and the implementations of fuze safety state restoration are proposed.Based on high-speed flight environment, the S&A device and control circuit for fuzes are designed. The Safety redundancy contains inertial safety device and electromagnetic safety device. The slider interrupter mechanism is used in the design. After the ammunition is launched, fuzes change from safety state into armed state. When special circumstances appear and the offensive tasks are repealed, the command platform sends the Safety state restoration command, which controls the slider to keep moving forward to control the fuzes change from armed state into safety state.According to the inertia overload characteristics of munitions during the launching process, the setback inertial safety device and interrupter mechanism are designed. The electromagnetic safety device is designed according to the handling and quickly moveing requirements. Then ANSYS software is used to simulate the electromagnetic force of the electromagnetic safety device, the electromagnetic force data is obtained. ADAMS software is used to simulate the interrupter mechanism and safety device, the function characteristics of the mechanism is obtained. The simulation results show that the design can meet the requirements.In order to send state restoration command to the fuze, the cross-linking of information between command platform and fuzes is needed. Consequently, the wireless communication module based on C8051F310 MCU and nRF24L01 RF transceiver chip is designed. The hardware and software of the communication system is debugged. Experiments show that the transceiver module has a rapid processing function and it can achieve the correct communication.