Laser Detonation Mems Fuze Safety System Design Research

It is a serious threat to electric initiation fuze that the battlefield electromagnetic environment becoming deteriorating. Discovering a new initiation technology for fuze is an important innovation aspect for fuze development. Reducing fuze volume has been one of the fuze development directions. In this paper, a fuze S&A device is presented in which the laser initiation technology and MEMS processing technology is used. The principles and structural of the fuze MEMS S&A device is illustrated.Firstly, the development status of laser initiation and the main advantages and disadvantages of the laser initiation fuze is expounded. The laser initiation fuze MEMS S&A device scheme is presented based on feasibility analysis of laser initiation technology application in fuze.Secondly, the laser initiation fuze MEMS S&A device is presented based on rockets fuze environment. In this S&A device, the ignition information of the rocket engine and the launch recoil environment is used as two independent environmental. An actuator is used to open or close the laser energy transmission path between the laser and the pyrotechnics as an arming device.Finally, the main component of the fuze MEMS S&A device is designed, which includes the setback arming device, MEMS electrothermal actuator and the locking mechanism. The setback arming device can discriminate between the dropping (peak acceleration:10000g, pulse width:350μs) and at firing (peak acceleration:100g, pulse width:60ms) accurately. The output force and displacement of the electrothermal actuator under20V-25V can meet the design requirements. The locking mechanism can keep the setback arming device and electrothermal actuator stable at the armed position.