Design and Analysis of Space Deployable Mast Based on Double-layer Deployable Unit
Space deployable mast has been widely used in aerospace.There have been few configuration designs of the deployable unit of the space deployable mast.In this paper,the space deployable mast based on the double-layer deployable unit(DDU)is proposed.The prototype of the space deployable mast is designed and manufactured.The fundamental frequency surrogate modal of the DDU is established based on the polynomial response surface method.The relations between the fundamental frequency,folding rate and the basic structural parameters of the DDU are analyzed.The fundamental frequency atlas and folding rate atlas are obtained.The deployment simulation of the space deployable mast is performed by Simscape,and the kinematic properties and driving properties are obtained,which are verified by the ground deployment test.The modal simulation and static simulation of the deployable mast under tensile,bending and torsional loads are performed by ANSYS.It is found that the cables can effectively improve the fundamental frequency and static stiffness of the space deployable mast.
space deployable mastdouble-layer deployable unit(DDU)fundamental frequencydynamic simulationground deployment test
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