Kinematics And Dynamics Analysis And Test Study For The Folded-wing Design Of Aircrafte

For the aircraft adopts tube-launching mode,wings are folded before launch and rapidly unfolded after firing. After the aircraft flew out of the tube,wings are automatically opened to the position and locked by the unfolding force. In this paper, folded wing aircraft as the research object, study its composition and functional principles of the various components proposed folding wing design, build aircraft wings folded three-dimensional model, motion simulation and strength analysis of characteristics, through the ground to expand testing and static test, verify the rationality of the structural design of folding wings.Based on the analysis of the present situation of the folding wing, to propose a torsion spring as a power source for driving the folding wing aircraft design of new programs, and folding the airfoil, the deployment mechanism and locking mechanism to study the structure of structural strength and spring locking mechanism of the screw are calculated and detailed design of the torsion spring structure has been designed to expand the time were calculated. The final completion of the folding wing aircraft PRO / E three-dimensional modeling, motion characteristics for subsequent simulation and strength analysis provided the conditions.Based on ADAMS virtual simulation software, virtual prototype folding wings and feature motion simulation analysis, the load curve of the angular velocity and folding wings unfold time and other major performance parameters and the shaft and locking pin. Using ABAQUS finite element analysis model to simulate the folding wing position maximum force structure, through the stress and displacement fields, we analyzed the structural strength of the folded wings, provide a theoretical basis for subsequent tests.Set up the demonstration test system for the unfolding of wings to conduct ground tests to get the unfolding time and acceleration. Set up the static test system to obtain the stress distribution under the application of working load and design load as well as displacement and max bearing capacity.