Design And Research On Deployable Mechanism And Test System Of Folding Wing

As a significant component of missile, the deployable mechanism of folding-wing not onlyreduces launch volume, but also makes it convenient for the missile to transport and store.Futhermore, performance test of the folding-wing deployable mechanism is regarded as a majormeasurement for its structural design. Aiming at researching deployable mechanism ofline-styled folding-wing, its scheme design, aerodynamic loading method design, test systemdesign and mechanical experiments are achieveded. Specifically, this paper proceeds as follow.Based on working principle and structural composition analysis of folding-wing deployablemechanism, multi-objective optimization for its key dimension parameters is carried out, and theparameterized model is established by MATLAB. As a result, optimum parameters of thedeployable mechanism are obtained. Thus, three-dimensional model is built and the principleprototype is developed.In order to simulate the aerodynamic load on the folding wing during its deployment, anaerodynamic loading method is proposed. First of all, aerodynamic characteristics of folding-wingdeployable mechanism are analyzed by FLUENT. Afterwards, the distributed aerodynamic loadand equivalent aerodynamic load are respectively loaded on folding wing, with distribution of itsstress and strain acquired. The results prove that concentrated loading of equivalent aerodynamiclift is feasible.According to design principles of folding-wing deployable mechanism, its performanceparameters are analysed and the ground test method is put forward. What’s more, schematicdesign, structural design and data acquisition system design of the test system are accomplished,which provides an experimental basis for subsequent mechanical test.Deduced from Lagrange equations, dynamic model of folding-wing deployable mechanismis established.Meanwhile, simulation analysis is conducted by ADAMS package, withdeploying time, deploying angle and locking impact obtained. Eventually, mechanical groundtest for folding wing is conducted. By comparing the experimental datas with dynamicsimulation results, it verifies the correctness of the test system for folding-wing deployablemechanism.