System and method for processing dynamic force measurement wind tunnel test data of rotary aircraft

The invention provides a method and a system for processing dynamic force measurement wind tunnel test data of a rotary aircraft. The method comprises: outputting an induction signal through a sensorgroup; outputting a dynamic signal through a data collector; calculating a model attack angle and a roll angle and segmenting a dynamic signal; obtaining a low-pass filtering cut-off frequency throughspectrum law analysis, and designing a low-pass filter; obtaining an elastic deformation amount to correct elastic deformation of the strut; calculating aerodynamic coefficients of the no-load stateand the test attack angle; obtaining a dynamic aerodynamic coefficient of each test attack angle corresponding to each roll angle; correcting the dynamic aerodynamic coefficient under each test attackangle and obtaining an available dynamic aerodynamic coefficient; and calculating the average value of the dynamic aerodynamic coefficients as the time-average aerodynamic characteristics of the aircraft. The method for process