The analysis of orbital motion and equilibrium of large structures is one of the relevant problems of space flight mechanics. The article deals with the equilibrium of extended one-dimensional objects in a circular orbit. The following properties of the objects are shown in the paper: non-Keplerian motion of the center of mass, the relative position of the center of mass and center of gravity, the nature of acting forces. The expressions for determining the axial force in the cross-sections of the structure are proposed in the framework of exact and linearized approaches. The gravitational-centrifugal load acting on an extended object is considered as a self-balanced system of forces of apparent weight with apparent acceleration variable along the local vertical. The assumptions related to the physical linearization of the problem are given. The nature and value of the microgravity acceleration acting in the cross-sections of extended objects are shown. The difference between the orbital angular velocity of the point particle and the mass center of an extended object is approximated. It is found that the position of the gravitational center relative to the center of mass depends on the squared ratio of the radius of gyration to the orbital radius.
Space tether system in a circular orbit: Static analysis
XLIII ACADEMIC SPACE CONFERENCE: dedicated to the memory of academician S.P. Korolev and other outstanding Russian scientists – Pioneers of space exploration ; 2019 ; Moscow, Russia
AIP Conference Proceedings ; 2171 , 1
15.11.2019
7 pages
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
060010 Space tether system in a circular orbit: Static analysis
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