Direct optimization of low-thrust orbit-raising maneuvers using adjoint sensitivities
Arustei, Adrian Dutta, Atri
Arustei, Adrian
Dutta, Atri
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2024
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Article
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Keywords
Adjoint sensitivity,Direct method,Low-thrust transfer,Sequential initial guess,Single shooting
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Citation
Arustei, A., Dutta, A. Direct optimization of low-thrust orbit-raising maneuvers using adjoint sensitivities. (2024). Acta Astronautica, 219, pp. 965-981. DOI: 10.1016/j.actaastro.2024.03.059
Abstract
This paper considers the problem of optimizing minimum-time and minimum-propellant many-revolution low-thrust geocentric orbit-raising maneuvers to an arbitrary target. The proposed direct single-shooting technique utilizes the regularized h,e element set as well as analytical models for ephemeris, shadow geometry, and thrust magnitude for ease of the optimization procedure. Third body and J$_2$ effects are included for higher fidelity of the computed solution. The gradient information supplied through adjoint sensitivities facilitates the convergence of the numerical optimization scheme. We also propose a new automated, fast and robust initial guess generation methodology by solving a sequence of unconstrained optimization orbit-raising sub-problems. The performance of the developed algorithm is demonstrated for orbit-raising to a variety of targets: the geosynchronous equatorial orbit, the Molniya orbit, and a near-rectilinear halo orbit. © 2024 IAA
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Elsevier Ltd
Journal
Acta Astronautica
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0094-5765