Longitudinal high incidence unsteady aerodynamic modeling for advanced combat aircraft configuration from wind tunnel data

The extension of flight envelope to high angles of attack has been a key requirement for modern aircrafts.Advanced combat aircrafts should be provided with super maneuver performance to improve operational effectiveness.In this case,the incidence of aircraft could be very large,even reaching post stall angles.The aerodynamics show strong nonlinear and unsteady characteristics in the flight of high incidence,which are caused by complex flow structures such as attached flow separation and vortex burst[1].The unsteady aerodynamic modeling at high incidences is helpful to control law design and flight simulation which has great practical significance.With its progress over two decades,unsteady aerodynamic models can