Analytical method for the attitude stability of partially liquid filled spacecraft with flexible appendage

In this paper, the attitude stability of liquidfilled spacecraft with flexible appendage is investigated. The motion of liquid sloshing is modeled as the spherical pendulum,and the flexible appendage is approached by a linear shearing beam. Nonlinear dynamic equations of the coupled system are deriv...

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Bibliographic Details
Published in:Acta mechanica Sinica 2017-02, Vol.33 (1), p.208-218
Main Authors: Yan, Yulong, Yue, Baozeng
Format: Article
Language:English
Subjects:
analysis
attachment
Stability
Classical and Continuum Physics
Computational Intelligence
Engineering
Engineering Fluid Dynamics
Liquid-filled
method
Flexible
Nonlinear dynamics
Research Paper
spacecraft
Energy-Casimir
Stability analysis
Theoretical and Applied Mechanics
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Summary:In this paper, the attitude stability of liquidfilled spacecraft with flexible appendage is investigated. The motion of liquid sloshing is modeled as the spherical pendulum,and the flexible appendage is approached by a linear shearing beam. Nonlinear dynamic equations of the coupled system are derived from the Hamiltonian. The stability of the coupled system was analyzed by using the energy-Casimir method, and the nonlinear stability theorem of the coupled spacecraft system was also obtained. Through numerical computation, the correctness of the proposed theorem is verified and the boundary curves of the stable region are presented. The increase of the angular velocity and flexible attachment length will weaken the attitude stability, and the change of the filled ratio of liquid fuel tank has a different influence on the stability of the coupled spacecraft, depending on the different conditions. The attitude stability analysis of the coupled spacecraft system in this context is useful for selecting appropriate parameters in the complex spacecraft design.
ISSN:0567-7718
1614-3116
DOI:10.1007/s10409-016-0616-9