A new idea based on the field test data for guided aircraft aerodynamic model parameters modification

Abstract

The aerodynamic parameters model is one of important models of guided aircraft simulation system, the modification of the aerodynamic parameters model is an important aspect that the simulation test should analyze. Based on the analysis of the existing aerodynamic parameters modification methods, this paper proposes a new aerodynamic parameters modification method, which build on the field test data, and its implementation steps. This paper, firstly, introduces the aerodynamic parameters modification models, and gives the modification parameters identification models which came from six-degree-of-freedom equations; Secondly, by using the parameters estimation theory which is based on Least Square, it calculates the modification parameters identification model; Thirdly, it analyzes the modification effect for the original value of aerodynamic parameters quantitatively; Finally, to illustrate the reasonability and effectiveness of the aerodynamic parameters modification method, it designs the trajectory reconstruction test. The simulation test result validates the availability of this new aerodynamic parameters modification method.