Choice of the low-altitude disposal orbits and transfer of obsolete spacecrafts to them
| Authors: Golikov A.R., Baranov A.A., Budyansky A.A., Chernov N.V. | Published: 02.09.2015 |
| Published in issue: #4(103)/2015 | |
| Category: Aviation and Rocket-Space Engineering | Chapter: Aircraft Dynamics, Ballistics, Motion Control | |
| Keywords: maneuvering, disposal orbit, disposal orbit evolution, numerical and analytical prediction, THEONA | |
The paper discusses the problem of transferring an obsolete spacecraft to a preset long-term disposal orbit (25 years). Circular and elliptic disposal orbits evolution is studied. The findings allow choosing a required disposal orbit considering the conflicting criteria: the transfer to an elliptic orbit needs less fuel consumption, but the transfer to a circular orbit moves an obsolete spacecraft more rapidly out of the area of functioning spacecrafts. High-precision calculation algorithms for parameters of both the disposal orbits and maneuvers, which transfer a spacecraft to these orbits, are presented. The numerical and analytical THEONA integrator is used to predict movements within a long time span. It allows reducing twice or thrice the computation time while keeping the same accuracy of the numerical integration.
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