With development of MEMS pyrotechnics devices such as semiconductor bridge/metal bridges, the energy required to fuze ignition becomes smaller and smaller. The energy needed for traditional short-circuit is far greater than MEMS pyrotechnics devices explosive, and takes a large space of fuze, which does not accord with the smaller trend in fuse volume and ignition energy. This paper describes a MEMS short-circuit fuse based on electro-thermal theory, it has similar volume with MEMS pyrotechnics devices, and the energy required is less than the traditional shorts fuse. This short-circuit fuse has well safety features, short action time, small volume, low cost, and it is suitable to be used in fuse or other areas .

Operation of the gun/turret system in a military tank is limited by several constraints some of which are posed by obstacles existing on the vehicle's own platform. In this study we tried to eliminate some of these constraints by the design and adaptation of transmission system between the chassis of the vehicle and the upper structure. The proposed approach is to adapt a motion platform on the top of the chassis of the vehicle. The motion platform chosen is a 3RPS parallel robot will achieve persistent control by allowing the upper structure of the vehicle to always back to the horizontal position and stay in a level position, in spate of the displacements and vibrations on the vehicle. The design of the chassis of the vehicle and the parallel platform is made using SolidWorks Computer Aided Design software. After that according to structural characteristics of the 3-RPS parallel robot, the mathematical model of the posture inverse kinematics is established. Based on Matlab software, SimMechanics, the simulation model of this robot is established. The validity of the inverse kinematics is proved by comparing the two models. And during the simulation, the related kinetics data and motion animate are obtained. Finally the simulation comparison after setting the parameters of the PID controller is established too, the animation shows that the control effect is obvious where the moving platform follows the desired trajectory.

Laser light beam transmit efficiency and accuracy in atmosphere channel is important parts in space laser communication system. The atmosphere channel effects to laser light beam mainly have two aspects, atmospheric attenuation and atmospheric turbulence. After doing related experiments, we figure that the speed of wind has little effect to atmospheric turbulence and the altitude is portional to structure parameter. And bad weather has much influence with energy transmission efficiency. In practical situation, we should consider two ways working at the same time refer to our conclusions.

The optical properties is essential to the process of identification in Laser Identification Friend or Foe (Laser-IFF) system. The corner cube reflector (CCR), composed of three mutually orthogonal reflective micromirrors, is extensively used in Laser-IFF system for it can reflect incident light at any angle to its incoming direction. So the micromachined CCR array is set to be the most important component of the responder. And assuming the Laser-IFF system is used in missiles, we present an analysis of the optical properties about the responder sectional area, the signal power of the responder and the echo power from the responder to the inquirer, considering at different effect distances between the inquirer and responder, divergence half-angle, CCR arrays reflectivity and other factors. Further field testing about the system can reference obtained experimental results and conclusions.