Dynamic modelling of parafoil system based on aerodynamic coefficients identification

This study focuses on the identification of aerodynamic coefficients through airdrop data based a known six-degree-of-freedom (6-DOF) model. Since precise modelling parafoil system is prerequisite for design guidance, navigation and control systems, accurate calculation vital. paper first presents rigid 6-DOF nonlinear model simplifies it by linearizing equations around equilibrium point, which facilitates acquisition parameters next. Then, recursive weighted least square method applied to identify roll yaw from test data. At last, simulations in wind environment are implemented analyse dynamics gliding turning. The experiment also verifies effectiveness dynamic accuracy identification.