A Study on the Vibration Characteristics of the Optical Structure in the Aerial Vehicle and Optimisation Using Robust Design

Abstract

In this paper, an optical structure for the aircraft was considered and its vibrational characteristics and weight were optimised using the robust design technology. To acquire the vibration characteristics and the stable line of sight, modal analyses were performed to the optical structure using the commercial multi-body dynamics programme ADAMS. Four design variables, were selected to investigate the vibrational characteristics as well as lightweight effect using the L9(34) type orthogonal array. To fulfill the natural frequency criterion (75Hz), the proper values of each design variable were suggested.