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    • Stability and Control Response of Spinning Solar Sail-craft containing A Huge Membrane

    Paper number

    IAC-06-C1.1.07

    Author

    Mr. Shuhei Nishimaki, University of Tokyo, Japan

    Coauthor

    Dr. Junichiro Kawaguchi, Japan Aerospace Exploration Agency (JAXA)/ISAS, Japan

    Year

    2006

    Abstract
    Spinning Solar Sail-craft is one of the main projects in ISAS/JAXA. It doesn’t contain rigid members like mast, and can keep its shape by centrifugal force. Therefore, mass of the probe vehicle can be less, and buckling of rigid members need not considered, so the size of membrane can be huger. On the other hand, the motion of a huge membrane must be considered when Spinning Solar Sail-craft is adopted. This paper has two main subjects: Indicator of stability of the vehicle and conservation of the membrane shape. These indicators will be useful to design Spinning Solar Sail-craft. In this paper, they are obtained analytically, and examined by numerical calculation of multiparticle model. Furthermore, we try to look into the motion of membrane by experiment. The concrete methods are ice-link and flying balloon.

1.Indicator of stability

When rigid body with spinning membrane is considered, attitude stability cannot be decided by inertia moment ratio. The indicator is obtained analytically to discuss various configurations. Though only in-plane transformation was considered in last IAC, out-plane transformation is also considered in this paper. These transformation are treated independently.

2.Indicator of conservation of the membrane shape

The indicator to conserve membrane shape is obtained by focusing the motion of membrane. Three thrusts are considered: radial thrust ,axial thrust and attitude change thrust. The maximum thrusts without instability of the membrane shape are obtained in these studies.

3.Experiment

The motion of membrane is examined on ice-link and by flying balloon.
The membrane is 20m in diameter and deploys quasi-statically. In this paper, the result of the experiment is reported and the indicator of stability is evaluated as a practical matter.
    Abstract document

    IAC-06-C1.1.07.pdf

    Manuscript document

    IAC-06-C1.1.07.pdf (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.