Abstract: The invention proposes a method of calculating aerodynamic derivatives for flight vehicle including the following steps: step 1: simulation and calculation of static aerodynamic coefficients for flight vehicle; step 2: simulate forced harmonic oscillation, specifically: create the harmonic oscillation profile by channels and determine the combined derivative according to the pitch, roll and yaw channels for at least 3 different frequencies; step 3: calculate the aerodynamic derivatives for each channel, specifically: establish a mathematical model describing the forced harmonic oscillations according to the channels, developing an optimal program to minimize the cost function and estimate parameters.