Design And Mechanical Properties Research On The Deployable Mechanism Of Folding Wing

The folding wing is an important part of the missile which is widely used inmodern missile for small missile launchers, simple-convenient transport and storage.The vast majority types of folding wings have only one deploying and lockingfunction, shorter deployable time, and larger deploying-locking impact. Thedeployable mechanism developing of folding wing for reducing deploying-lockingimpact of folding wings, extending the missile’s service life, improving mobility andtarget accuracy has an important significance.The multiple applicative programs on the deployable mechanism of folding wingbased on its functional and principles analysis, application background and designprinciples are found by comprehensively analyzing on its research situation anddevelopment trend at home and abroad. Space cam–helix combined deployablemechanism of the folding wing as the optimal design program is selected by usingmulti-level fuzzy comprehensive evaluation.The design parameters of space cam–helix combined deployable mechanism isdrown up, in which driving device, folding wing body, space moving cam mechanismand other key components are designed. At last, two-dimensional drawing andthree-dimensional modeling are achieved for providing the conditions of subsequentkinematics and dynamics analysis.According to its transmission order of space cam–helix combined deployablemechanism of the folding wing, its kinematics analysis model is established bysimplifying its structure relations. Based on MATLAB software, its angulardisplacement, angular velocity and angular acceleration are calculated, which is usedon verifying design its correctness on the grooves profile by Lagrange equations. Andthen, its dynamics theory model of space cam–helix combined deployablemechanism is established, which is used on verifying its rationality of the deployablemechanism design. Its value of angular displacement, angular velocity and angularacceleration based on non-friction and friction conditions are calculated and analysisby ADAMS simulation. By two-state model theory of impact dynamics, the mainfactors on the folding wing performance including friction, clearance and aerodynamic drag are determined,which provides the theoretical basis of futureresearch.