Missiles And Aerodynamic Parameter Identification Method Research

Aerodynamic is an important factor to affect the projectile flight movement.Therefore, it is an necessary research work to obtain accurate aerodynamicparameters during the process of Projectile research.In light of shooting experiment method, this paper analysis the advantages anddisadvantages of existing aerodynamic parameter identification method andoptimization method, and put forward a new method that uses ISIGHT optimizationsoftware to optimize Projectile aerodynamic parameters.The method adoptsProjectile movement data measured in the experiment and uses the outside ballisticequation to connect the objective function and the design variables. And throughusing the program set component of ISGIHT optimization software, the optimizationmodel is established. After optimal solution, we get the Projectile aerodynamicparameters that meet the requirements. This article is also combined with theexample to compare the simulation of three numerical optimization algorithms, suchas Hooke-Jeeves direct search method, downhill simplex method and sequentialquadratic programming method, and to identify the optimization algorithm that issuitable for Projectile aerodynamic parameters. Finally using the proposed method tocalculate the Projectile aerodynamic parameters and verify the feasibility andpracticability of method proposed in this paper.