Trajectory prediction method for wind tunnel multi-body separation test model

The invention discloses a trajectory prediction method for a wind tunnel multi-body separation test model. According to the prediction method, a Kriging mathematical model of six-component aerodynamic coefficients under different relative positions and postures of a multi-body separation test model is established by using multi-body separation wind tunnel grid force measurement test data, and a motion track is calculated by using a rigid body six-degree-of-freedom motion equation. The separation track is divided into a plurality of moments according to time, the aerodynamic force at the initial moment is predicted according to the mathematical model, the model posture at the next moment is calculated according to the model posture at the initial moment in combination with the motion equation, and the aerodynamic force under the model posture at the next moment continues to be predicted according to the model posture. The process is cyclically executed to obtain a separation track of the multi-body separation