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Research Article

Controlled deployment of a long tether to operate as a partial space elevator

Department of Mechanical Engineering, McGill University, Montreal, QC, H3A 0C3, Canada
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Abstract

The deployment of a long tether to operate as a partial space elevator, starting from a nucleus in geostationary orbit, is studied. Uncontrolled deployment is an inherently unstable process because the center of orbit gradually decreases from the geostationary altitude when deployment progresses. It is also observed that the elasticity of the tether has an important effect on deployment stability. It is shown that the application of a transverse force on the main spacecraft, determined by using linear state feedback and appropriate gains, can stabilize the deployment. An LQR controller is developed. Simulations of the dynamics of the system are carried out using this controller for various parametric values of tether elasticity, deployment rates, etc., to evaluate the efficacy of the controller.

Keywords

stabilitycontroltetherdeploymentspace elevator

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Astrodynamics
Volume 8 Issue 2,
June 2024
Pages 311-321
DOI: 10.1007/s42064-024-0225-5
Cite this article:
Huang J, Misra AK. Controlled deployment of a long tether to operate as a partial space elevator. Astrodynamics, 2024, 8(2): 311-321. https://doi.org/10.1007/s42064-024-0225-5

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Received: 15 February 2024
Accepted: 28 May 2024
Published: 10 June 2024
© Tsinghua University Press 2024
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