Nonlinear aircraft rudder/wing aeroelastic problems resulted mainly from the nonlinear factors instructural parts,pneumatic and servo systems.In order to meet the requirements of saving space during storage and transportation,the folding rudder/wing segment structure are adopted in some missiles and carrier-based aircrafts.The existence of unavoidable clearance sin the folding rudder hinge joints can change the stiffness and aeroelastic properties of the system.Generally,aerodynamic flutter occurs with a fr...