Research of modeling method based on integrated design for airframe-propulsion-control of AHV

The design of Air-breathing Hypersonic Vehicle (AHV) flight control system is encountering some new problems derived from the strong coupling physical fields including aerodynamic, aerodynamic heating, flexibility, propulsion, trajectory and attitude. In this paper, a modeling method based on integrated design for airframe-propulsion-control of AHV is developed. Firstly, a 3D vehicle configuration is designed by using the parametric system to determine the vehicle's overall performance. Secondly, the vehicle's flow field is analyzed, and by including the control constraints the aerodynamics are calculated accurately and efficiently through a set of engineering estimation methods. And the scramjet engine is modeled based on integrated design. Finally, the motion equations of the flexible vehicle are derived using Lagrange's Equations. The modeling method is verified by simulation and is a feasible and reliable method for hypersonic air-breathing vehicle integrated design.