大型可展构架式星载抛物面天线结构设计

A large deployable hexapod paraboloid antenna

提出了一个利用伸缩杆驱动的六棱柱展开单元 ,和国内外已有的设计相比 ,该单元可动机构数较少 ,展开可靠度高 ,结构刚度好 ,且具有很广泛的几何适应性 ,能容易地构造复杂二维可展结构 ,具有广泛的应用前景 .利用伸缩杆六棱柱单元 ,设计了一大型构架式切割抛物面天线 ,并简要介绍了天线的可展节点细部设计杆件分类统计 .该天线的形面精度较高 ,质量轻 ,造价低 .最后 ,对天线模型进行了结构分析 。

The space deployable hexapod parabdoid truss antenna presented in this paper is based on the hexahedron module can stow and deploy with the stretching and shortening of the diagonal members. The deployable power is provided by the tension spring in the diagonal rod, and there is no need for extra force. Various deployable structures can be formed by connecting more than one hexahedral module together. A most important feature is that there is no mechanism to be locked when the structure is deployed. Its packaging efficiency and stiffness have been shown to be good too. This antenna is designed by using a deployable hexapod truss has light mass and high precision. Structure analysis revealed the high of rigidity the antenna.