Repeated Shadow Track Orbits for Space-SunSetter Missions
This paper introduces a new set of orbits, the “Repeated Shadow Track Orbits.” In these orbits, the shadow of a spacecraft on the Earth visits the same locations periodically every desired number of days. The 𝐽2 perturbation is utilized to synchronize the spacecraft shadow motion with both the Earth...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2009-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2009/561495 |
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| _version_ | 1850176267683364864 |
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| author | Ahmed Gad Ossama Abdelkhalik |
| author_facet | Ahmed Gad Ossama Abdelkhalik |
| author_sort | Ahmed Gad |
| collection | DOAJ |
| description | This paper introduces a new set of orbits, the “Repeated Shadow Track Orbits.” In these orbits, the shadow of a spacecraft on the Earth visits the same locations periodically every desired number of days. The 𝐽2 perturbation is utilized to synchronize the spacecraft shadow motion with both the Earth rotational motion and the Earth-Sun vector rotation. Motivation for the design of new shadow track orbits comes from the need to save energy. The general mathematical model to design a Repeated Shadow Track Orbit (RSTO) is presented within this paper. RSTOs' conditions are formulated and numerically solved. Results show the feasibility of RSTOs. An optimization process is also developed to maximize the shadow duration over a given site. A Genetic Algorithm (GA) technique is utilized for optimization. |
| format | Article |
| id | doaj-art-b7d4d96d89ff4a10af54eb4eade12de2 |
| institution | OA Journals |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-b7d4d96d89ff4a10af54eb4eade12de22025-08-20T02:19:18ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742009-01-01200910.1155/2009/561495561495Repeated Shadow Track Orbits for Space-SunSetter MissionsAhmed Gad0Ossama Abdelkhalik1Department of Mechanical Engineering-Engineering Mechanics, Michigan Tech University, 815 R.L. Smith Bldg, Department of Mechanical Engineering-Engineering Mechanics, Michigan Tech University, 815 R.L. Smith Bldg, This paper introduces a new set of orbits, the “Repeated Shadow Track Orbits.” In these orbits, the shadow of a spacecraft on the Earth visits the same locations periodically every desired number of days. The 𝐽2 perturbation is utilized to synchronize the spacecraft shadow motion with both the Earth rotational motion and the Earth-Sun vector rotation. Motivation for the design of new shadow track orbits comes from the need to save energy. The general mathematical model to design a Repeated Shadow Track Orbit (RSTO) is presented within this paper. RSTOs' conditions are formulated and numerically solved. Results show the feasibility of RSTOs. An optimization process is also developed to maximize the shadow duration over a given site. A Genetic Algorithm (GA) technique is utilized for optimization.http://dx.doi.org/10.1155/2009/561495 |
| spellingShingle | Ahmed Gad Ossama Abdelkhalik Repeated Shadow Track Orbits for Space-SunSetter Missions International Journal of Aerospace Engineering |
| title | Repeated Shadow Track Orbits for Space-SunSetter Missions |
| title_full | Repeated Shadow Track Orbits for Space-SunSetter Missions |
| title_fullStr | Repeated Shadow Track Orbits for Space-SunSetter Missions |
| title_full_unstemmed | Repeated Shadow Track Orbits for Space-SunSetter Missions |
| title_short | Repeated Shadow Track Orbits for Space-SunSetter Missions |
| title_sort | repeated shadow track orbits for space sunsetter missions |
| url | http://dx.doi.org/10.1155/2009/561495 |
| work_keys_str_mv | AT ahmedgad repeatedshadowtrackorbitsforspacesunsettermissions AT ossamaabdelkhalik repeatedshadowtrackorbitsforspacesunsettermissions |