Simulation of the Trajectory of Launch Vehicle Based on Lateral Jet and Grid Fin Combined Control

Certain solid launch vehicle was controlled by lateral jet and grid fin.The performance of the fist stage of the flight trajectory was simulated and modeled.The control capability of the lateral jet and the grid fin was analyzed and the liquid fuel consumption of the lateral jet engine was calculated.The numeric result of the first stage was presented.The simulation indicates that the trajectory under the control of lateral jet and the grid fin can meet the requirement of launch vehicle system design.