A Research On Design And Structure Strength Of Missile Composite Nose Fairing

The conceptual design of the nose fairing is the key issue in the developmentprocess of a certain missile. It is demanded not only to meet the needs of extremelyaerodynamic heating and aerodynamic loads, but also to serve a particular requirementof batch production. The purpose of this paper is to introduce some recent advances in acertain missile design and studies of structure strength, particularly the composite nosefairing.Firstly, the reasonable tactical and technical index of the nose fairing is studied outin light of all sorts of factors and practical situation and requirements, and theconceptual scheme design of the nose fairing is performed in terms of the tactical andtechnical index and the design parameters of other similar nose fairings. Secondly, thethermodynamics characteristic of the nose fairing is calculated in light of itsaerodynamic loads parameters, it shows that the fiber reinforced polymer（FRP）nosefairing can satisfy the temperature of the missile. Next, the composite material of thenose fairing is designed and calculated, and the results are given. The results show thatthe design parameters of conceptual scheme of the nose fairing can meet therequirement of the tactical and technical index. After that, a finite element method（FEM）model of the nose fairing is established to calculate its stress and strain.Finally, the ground static load test and the combined thermal static load test areperformed. The nose fairing is tested in a missile flight test, and the telemetrytemperature data is acquired. It is shown that the numerical analysis simulating data iscoincident with the testing one, which offers technical support to optimize the nosefairing.The validity of this composite material nose fairing involved in the paper not onlyresolve the difficult problem of the missile design, but also save time for the wholeweapon system, which meet the requirements of the engineering practice. Research ofnumerical analysis and the test method adopted by this thesis has proved to be feasible,which will provide valuable experience and data for the overall process of subsequentsimilar structure parts, such as structure design、material selection and test schemedesign.