Elastic disturbance modeling and analysis for hypersonic vehicle

Abstract

To achieve precise control of hypersonic vehicle, the paper analyzed the effects of flexible vibration on the hypersonic vehicle flight control system, a non-linear physics-based dynamic model including the impacts of structure, aerodynamic, thrust system coupling and elastic impact for an air-breathing hypersonic vehicle was developed. One of the main disturbance-coupling between elastic mode and rigid state was modeled and analyzed. A disturbance observer was designed and simulated. Simulations results are provided to validate the proposed approach.