中文摘要：

首先介绍了铰接式可展空间伸展臂设计构造、受力特点与展开折叠机理,然后根据弹性稳定理论与卡氏能量原理,分别推导出局部卷压屈曲和整体螺旋屈曲的临界压力表达式,并据此进行参数特性分析。该文分析理论对铰接式空间伸展臂的设计具有重要指导意义。

英文摘要：

The detail design philosophy, construction characteristic and structural mechanical performances are firstly introduced, and mechanism of expanding and folding procedure is described for one kind of continuous longeron extendible mast with hinges, named Hinged Mast. Based on the elastic stability theorem and Castigliano energy principle, the critical buckling forces to activate deployment are formulated respectively in detail for the local coil mode and helix mode, and series of numerical computations are performed for structural parametric analysis of hinged space mast. The analytical theory can make a significant contribution to the design of space mast.