Multidisciplinary Design Optimization Of Hypersonic Aeroassisted Orbital Transfer Vehicle

Aeroassisted orbit transfer vehicle(AOTV),a kind of orbit transfer vehicle,relying on the atmospheric maneuver of entering or escaping the atmosphere,and taking advantage of aerodynamic forces to produce an orbit transfer with an expenditure of energy significantly smaller and bigger payload,will open up broad possibilities of orbit transfer in the future.This paper focuses on a comprehensive analysis of the conceptual design of AOTV by proposing a wing body configuration and establishing a platform of multidisciplinary design.According to the actual background,the multidisciplinary design optimization of the AOTV is carried out.An aero-thermal integrated simulation platform for the AOTV is developed based on the optimized configuration.A survey is presented on the significant influence factors of aeroassisted orbit transfer and the design guidelines of AOTV.A conceptual configuration of AOTV is designed and geometrically parameterized.Based on it,this paper develops the physics models for aerodynamics,stability,aerothermodynamics,thermal protection system,weight and trajectory.According to these models,a multidisciplinary design platform is constructed and the sensitivity analysis of geometric parameters is achieved so that there're significant influence parameters obtained for each objective.Taking advantage of the significant influence parameters as the design parameters,the multidisciplinary optimization of AOTV is carried out and the optimal configuration which fulfills the requirements of the aeroassisted orbit transfer is obtained.At last,this paper develops an aero-thermal integrated simulation platform for AOTV to realize simulation and result visualization of aerodynamics,aerothermodynamics and external heat flux during the orbital mission of the AOTV.