Design of a Deployable Antenna Actuated by Shape Memory Alloy Hinge


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This paper is concerned about a design of a new deployable antenna actuated by 6 shape memory alloy (SMA) hinges. The antenna consists of 6 radial, tensioned, parabolic, deployable ribs connecting to a central hub. The hinge, located at each rib, is used of the Nitinol SMA material due to the ability to generate large strains and electrical resistive actuation. The elongated SMA wire is heated by an electrical current, caused to contract in response to a converse thermally-induced phase transformation. The resulting tension creates a moment, imparting rotary motion between two adjacent beams. The concept and operation of deployable antenna system are discussed in detail, and a dynamic simulation is presented. A series of experiments are performed on the SMA actuator to investigate the system behavior in the process of deployment. Results indicated that the hinge with low speed rotation and easy fabrication achieves reliable actuation for the deployment of the antenna, and the antenna demonstrates a high deployment-to-stowage volume ratio.



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




X. Lan et al., "Design of a Deployable Antenna Actuated by Shape Memory Alloy Hinge", Materials Science Forum, Vols. 546-549, pp. 1567-1570, 2007

Online since:

May 2007




[1] O. de Week, D. Miller1, J. Hansm, Multifunctionality in parabolic RF antenna design based on SMA actuated radiation pattern shaping. AIAA-98-4813, pp.849-855.

DOI: 10.2514/6.1998-4813

[2] Mikulas, M. M., and Thomson, M. State of the art and technology needs for large space structures, vol. 1: New and Projected Aeronautical and Space Systems, Design Concepts, and Loads of Flight-Vehicle Materials, Structures, and Dynamics-Assessment and Future Directions. ASME, New York, 1994, ch. 3, p.173.

[3] Gunnar Tibert, Deployable Tensegrity Structures for Space Applications, Royal Institute of Technology (Doctoral Thesis), 2002, pp.16-26.

[4] Jin Mitsugi, Kazuhide Ando, Yumi Senbokuya And Akira Meguro, Deployment analysis of large space antenna using flexible multibody dynamics simulation. Acta Astronautica Vol. 47(2000), No. 1, pp.19-26.

DOI: 10.1016/s0094-5765(00)00014-x

[5] Baier, H., Datashvili, L., Gogava, Z., Medzmariashvili, E., and Montuori, V. Building blocks of large deployable precision membrane re-flectors. In 42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference and Exhibit (Seattle, WA, USA, 16� 19 April 2001). AIAA 2001-1478.

DOI: 10.2514/6.2001-1478

[6] Weimin Huang, Shape Memory Alloys and their Application to Actuators for Deployable Structures, University of Cambridge Department of Engineering (Doctoral Thesis), 1998, pp.6-10.

[7] Jayasimha Atulasimha, Inderjit Chopra. Behavior of torsional shape memory alloy actuators, 44th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Confere 7-10 April 2003, AIAA 2003-1558.

DOI: 10.2514/6.2003-1558

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