Penetration Of Hypersonic Gliding Aircraft:Trajectory Planning And Guidance Method

The hypersonic glide vehicle combines the technical advantages of ballistic missiles and cruise missiles.With the high lift-to-drag ratio aerodynamic shape the gliding flight phase takes the advantage of wide range of maneuverability and provides advantage conditions for penetration.Under the threat of defensive weapons,the research on maneuvering penetration of hypersonic gliders is needed.The reentry gliding section is the main stage facing the threat of defensive weapons,and it is also the main stage that is different from the penetration of ballistic weapons.To deal with the threat of the developing missile defense system,this paper mainly researches the trajectory planning method,guidance method and penetration method of the hypersonic glide vehicle in the reentry gliding phase based on the research progress of related technologies.The main research contents of this paper are as following1.The reentry trajectory planning method for hypersonic glide vehicle is studied.To solve the fast trajectory planning problem,a fast trajectory planning method based on decoupled transform and sliding mode control method is proposed,which provides a reference for online fast trajectory planning based on complete reentry motion model.To solve the trajectory optimization problem,the LGL segmentation pseudospectral method combining the diversity initial value is proposed based on the traditional pseudospectral method.This method increases the probability of obtaining feasible solutions and selects multiple feasible solutions as optimization result.Considering the existence of uncertainty in the feasible solution of pseudospectral method,a method of trajectory optimization to the target position is proposed by combining the control vector parameterization method,parameter optimization method and fast trajectory planning method,which reduces the calculate consumption than direct application of control vector parameterization method.To solve the trajectory planning problem that needs to consider the changing rate of attack angle and bank angle,a trajectory planning method combining the Li derivative operation and the sequence quadratic programming method is proposed.2.The tracking guidance method based on reentry standard trajectory of aircraft is studied.To solve the guidance problem of the complete reentry motion model,using control vairables decoupling,waypoints and sliding mode control method,a standard trajectory tracking guidance method based on the complete reentry motion model is proposed.To solve the problem of full-state tracking guidance of standard trajectories,a full-state variable tracking guidance method is proposed using standard trajectory and pseudo-linearization method and sequential quadratic programming method,which can be used as a guidance method for ideal conditions.To solve the problem of timeconsuming adjustment of the flight,the time-consuming adjustment method using Li derivative operation and sequential quadratic programming method is proposed,which provides a method basis for the multi-aircraft coordinated arrival.3.The method of maneuvering penetration of hypersonic glide vehicle is studied.To solve the problem whether the defense zone can be avoided,the method of judging method using the pseudospectral method and the sequence quadratic programming method is studied.The corresponding penetration strategy can be selected according to whether the defense zone can be avoided.To solve the maneuvering penetration problem of the defensive zone that cannot be avoided,considering the general PPN guidance interception model,applying the Li derivative calculation and optimization method,the maneuver penetration method under general model is studied,and applied to the hypersonic glide vehicle maneuver penetration.4.Three-dimensional visualization simulation of the hypersonic glide vehicle maneuvering penetration.Based on the three-dimensional visualization simulation platform,the avoiding of defense zone,the maneuvering penetration of the unavoidable defense zone and the multi-aircraft cooperative penetration are simulated.Considering unavoidable defense zone,the maneuvering penetration of hypersonic gliding aircraft with pulse propulsion engine is analyzed and three-dimensional visualization simulated.