Modifying the atlas of low lunar orbits using inert tethers

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• 作者：Martin Lara^a ; ^{mlara0@gmail.com} ; ^mlara@roa.es ; Jesú ; s Pelá ; ez^b ; ^{j.pelaez@upm.es} ; Hodei Urrutxua^b ; ^{hodei.urrutxua@upm.es}
• 关键词：Frozen orbits ; Tethers ; Dumbbell model ; Lunar gravity field ; Averaging
• 刊名：Acta Astronautica
• 出版年：2012
• 出版时间：October-November, 2012
• 年：2012
• 卷：79
• 期：Complete
• 页码：52-60
• 全文大小：599 K

文摘

For long enough tethers, the coupling of the attitude and orbital dynamics may show non-negligible effects in the orbital motion of a tethered satellite about a central body. In the case of fast rotating tethers the attitude remains constant, on average, up to second order effects. Besides, for a tether rotating in a plane parallel to the equatorial plane of the central body, the attitude-orbit coupling effect is formally equal to the perturbation of the Keplerian motion produced by the oblateness of the central body and, therefore, may have a stabilizing effect in the orbital dynamics. In the case of a tethered satellite in a low lunar orbit, it is demonstrated that feasible tether lengths can help in modifying the actual map of lunar frozen orbits.