Abstract
The paper presents data obtained as a result of solving the power balance computation problem for the Science and Power Module (SPM) during the most difficult phase of its flight — up until the point in time when its solar arrays are deployed. The calculation took into account: prediction of the lighting and shadowing environment and the angle between the SPM orbital plane and direction towards the Sun; timeline of the SPM free flight, which takes into account changes in its attitude; timeline of SPM integration into the ISS Russian Segment, including the SPM docking and re-docking and the SPM solar array deployment. The feasibility of implementing the nominal flight plan of the module is demonstrated, a problem was identified with carrying out the SPM re-docking and pull-away maneuver in case of a miss. Measures are proposed for solving the above problem. Key words: Science and Power Module, power balance, ISS Russian Segment, free flight, docking, solar arrays, nickel-hydrogen storage battery
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