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Comportement thermodynamique de réservoirs d’ergols cryogéniques : étude expérimentale et théorique d’un système de contrôle pour des missions spatiales de longue durée

Abstract : This PHD thesis deals with the study of a pressure control system inside a cryogenic propellant tank for long duration space missions. This system must be able to reduce propellant losses induced by direct venting, which is the simplest pressure control system. The alternative system which has been studied, called Thermodynamic Vent System (TVS), is based on reinjecting subcooled spray to make the pressure and temperature decrease in a heated tank. The system performance has been analysed developing simultaneously an experimental setup, adapted to laboratory environment, and a theoretical 0D-modelling of subcooled spray impact on tank's thermodynamic characteristics. Facing experimental and theoretical results has permitted to validate the 0D-modelling tool. Inputing the real system characteristics in theoretical modelling has enabled to assess the effective gains of thermodynamic vent system. Finally, optimal solutions to control pressure inside a cryogenic propellant tank for long duration space missions have been proposed.
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  • HAL Id : tel-01201917, version 1

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Lauriane Demeure. Comportement thermodynamique de réservoirs d’ergols cryogéniques : étude expérimentale et théorique d’un système de contrôle pour des missions spatiales de longue durée. Mécanique des fluides [physics.class-ph]. Université de Grenoble, 2013. Français. ⟨NNT : 2013GRENI068⟩. ⟨tel-01201917⟩

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