Coupled trajectory and attitude stability of displaced orbits |
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Authors: | Hexi Baoyin Junfeng Li |
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Institution: | School of Aerospace, Tsinghua University, 100084 Beijing, China |
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Abstract: | Coupled trajectory and attitude stability of displaced solar orbits is studied by using sailcraft with a kind of two-folding
construction with two unequal rectangular plates forming a right angle. Three-dimensional coupled trajectory and attitude
equations are developed for the coupled dynamical system, and the results show that all three types of displaced solar orbits
widely referenced can be achieved through selecting an appropriate size of the two-folding sail. An analysis of the corresponding
linear stability of the trajectory and attitude coupled system is carried out, and both trajectory and attitude linearly stable
orbits are found to exist in a small range of parameters, whose non-linear stability is then examined via numerical simulations.
Finally, passively stable orbits are found to have weak stability, and such passive means of station-keeping are attractive
and useful in practice because of its simplicity. |
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Keywords: | Solar sail Displaced solar orbit Coupled trajectory and attitude stability Passive station-keeping |
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