Analysis of main damage accumulative surfaces of the Hypersonic Flight Vehicle

Abstract

Aiming at the problem of performance degradation of Hypersonic Flight Vehicle during damage-mitigating control, this paper analyzes the main damage accumulative surfaces under different flight dynamics. Firstly, the force model of the flight vehicle is established; secondly, establish the longitudinal elastic model and the damage model of the flight vehicle; finally, select four actual flight dynamics and fully consider the influence of elastic factors, and analyze the main damage accumulation surfaces under each flight dynamic. The simulation results show that the main damage accumulative surfaces of the flight vehicle under different flight dynamics are different, and the main damage accumulative surfaces are mostly the upper surface of the flight vehicle and the lower surface of the precursor. The strategy that defers the damage of the main damage accumulative surfaces should be adopted, which can not only effectively decrease the damage accumulative of the flight vehicle, but also protect the original performance of the flight vehicle.