Method and device for automatically changing sideslip angle of wind tunnel test model

The embodiment of the invention provides a wind tunnel test model sideslip angle automatic changing method and device.The method comprises the steps that a double-rotating-shaft supporting system is moved to an initial position, wind tunnel test initial data are collected at the initial position, and the double-rotating-shaft supporting system specifically comprises three shafts composed of an attack angle mechanism and a double-rotating-shaft mechanism; after a wind tunnel valve is opened and a flow field is stable, moving the three axes to three-axis angles corresponding to a plurality of given sideslip angles in sequence, carrying out attack angle mechanism movement, and collecting wind tunnel test data in a given attack angle range until all given sideslip angle tests are completed; and moving the double-rotating-shaft supporting system to a wind tunnel test ending position, closing the wind tunnel valve, moving the double-rotating-shaft supporting system to the initial position again, collecting wind tun