Design And Research On Side Wall Installation Muti-DOF Passive Airborne Radar Vibration Isolation Platform

With the development of the airborne radar technology, the traditional installation method of airborne radar can not satisfy the function of modern radar since the vibration produced by aerial circumstances is transmitted to the radar directly and reduce the signal accuracy of radar. The research on reducing the vibration from the aircraft is becoming an important topic in the field of airborne radar. a multi-dimensional passive vibration isolation platform is proposed in this paper. The isolation platform is designed based on parallel mechanism and the theory of passive vibration isolation for a certain type airborne phased array radar installed in UAV The isolation platform can not only meet the vibration isolate requirement for the airborne radar but can also protect the airborne radar from the impact excitation and large-displacement excitation. Simulation of the vibration isolation platform has shown that it can protect the working condition of radar in aerospace environment.The conceptual design of the vibration isolation platform is presented by method of HyperWorks/Optistruct topology optimization.The integral structure is designed based on the passive vibration isolation theory with parallel mechanism; The study of the platform based on screw theory and modified Griibler-Kutzbach formula showed it has six degrees of freedom so the platform can be used for six dimensional vibration isolation and the kinematics model of vibration isolation platform is built. the vibration isolation properties and shock-resistance performan of the vibration isolation platform are simulated The long-distance protection performance and redundancy protection performance of the platform is verified by simulation; The simulation of the radar deformation under resonance and long-distance excitation show that the destructive deformation would not occur for radar under such working condition.