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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (12): 3853-3860.doi: 10.7527/S1000-6893.2015.0162

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles     Next Articles

Optimization for structure efficiency of a deployable spaceborne truss with flat panel antennas

LI Bo1, YANG Yi2   

  1. 1. Shanghai Key Laboratory of Spacecraft Mechanism, Aerospace System Engineering Shanghai, Shanghai 201109, China;
    2. School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
  • Received:2015-01-30 Revised:2015-05-29 Online:2015-12-15 Published:2015-06-28
  • Supported by:

    National Natural Science Foundation of China (51305271); The Science and Technology Commission of Shanghai Municipality, China (06dz22105)

Abstract:

In view of the multiple indexes and their interactive influences evaluating the structure performances of deployable and foldable panel antennas, the structure efficiency is introduced to the deployable structure optimization, and optimization on structure design is studied by the orthogonal experiment for a space deployable truss. The geometric design parameters are analyzed, and an optimal mathematic model is also built with goals of minimum mass and maximal structural stiffness. Aimed at the structure efficiency maximization, the structure optimization for the space deployable truss is calculated, and the design parameters of truss structure are obtained. It is found that the factors that influence structure efficiency such as mass and stiffness are considered synthetically, and the mass of optimized structure is reduced and the deployment stiffness is improved simultaneously. The most important influencing factor on the structure performance is l/w, and the minor influencing factor varies with different optimization goals. When p=90% the study indicates that area has an insignificant effect on the structure efficiency of a space deployable truss.The structure efficiency of the space deployable truss with variable cross-section is better than that of the one with unique cross-section. However, the space deployable truss with unique cross-section shows more economy under unique linkage dimensions.The proposed method can be helpful for the designer in evaluating the structure performances at the conceptual stage of design from the point of system design.

Key words: space deployable truss, design parameter, structure efficiency, sensitivity analysis, significance analysis

CLC Number: