Abstract:
The coefficiency of aerodynamic force for a Fix-wing UAV based on CFD method is aquired in this paper, which also creates a geometry for the UAV,meshes the geometry and specifies boundary types. And the coefficeny through uncoupled implicit solver in K-E turbulence model is solved. The paper also presents a landing control method of keeping the UAV in large angel of attack and low velocity by sliding, which computes the right state of pre-landing by the computed coefficiency.A state feedback controller is applied to the landing control. The simulation programme constructed on the basis of Arosim toolbox in Simulink environment verifies the validity of the method applied in this paper..