Speaker: Kai Zhao

Affiliation: No. 38 Research Institute of CETC

Abstract:

Missile-borne Radar system is one of the core functional unit of the radar seeker,which working at the forefront of the missile platform and withstanding a large amount of randomness vibration load. To order to improve the mechanical environment adaptability of the missile-borne radar antenna system, Analysis of structural Characteristics , vibration damping design methods ,selection method of absorber , design method of damping parameters had been carried out in turn. The effect in random vibration environment of the damping deign methods had been studied by experiment. Tests on vibration reduction efficiency showed that the design scheme can control the high frequency vibration efficiently, especially the frequency after the resonance point, and the damping efficiency in X /Y/Z directions are 42.7%, 30.6%, and 40.1% matching design expectations. Tests on array displacement showed that there are significant variations among the displacement amplitude range in X/Y/Z directions, and the results are (-0.6, 2)mm, (-2, -1) mm, and (-0.1, 1) mm. Tests on array deflection showed that the variation range of deflection angle α/β/γ are （-0.1, 0.2）°,（-0.15, 0.15）°,and （-0.1, 0.02）°.

Biography:

Zhao Kai（Ph.D., Senior Engineer）, received the  B.Eng. and Ph.D. degrees in Mechanical and Electronic Engineering from Hefei University of Technology ，in 2010 and 2015，respectively.  Currently ，he is working at the 38th Research Institute of CETC and takes the charge of  the Chief Structural Engineer for a series of major projects. His main research directions include overall structural design, environmental adaptability design, modular design, and low-cost design of  radar.