Towards New Controller Design Oriented Models of Propellant Sloshing in Observation Spacecraft

Anthony Bourdelle (1) , Laurent Burlion (1) , Jean-Marc Biannic (1) , Hélène Evain (2) , Sabine Moreno (2) , Christelle Pittet (3) , Alexis Dalmon (4) , Sébastien Tanguy (4) , Tarek Ahmed-Ali (5)

1 DTIS, ONERA, Université de Toulouse [Toulouse]
2 CNES - Centre National d'Études Spatiales [Toulouse]
3 CNES - Centre National d’Études Spatiales [Paris]
4 IMFT - Institut de mécanique des fluides de Toulouse
5 LAC - Laboratoire d'automatique de Caen

The design of challenging and ambitious space missions entails a tightening of spacecraft pointing constraints. Among the many perturbations that have to be addressed, the sloshing of the on-board propellant is a complex issue. Recent developments in Computational Fluid Dynamics, supported by in-situ experiments like Fluidics or Sloshsat-FLEVO, open up ways for the characterization of liquids behavior inside tanks in microgravity. This knowledge can be applied in the context of spacecraft modeling and control. For this purpose, we present here a new approach to model the disruptive sloshing dynamics affecting spacecraft during attitude maneuvers. With the aim of mitigating slosh effects, this model will be used to design robust attitude controllers.

Mots clés: Control Oriented Modelling; Slosh dynamics; Propellant Slosh; Spacecraft Models; Computational Fluid Dynamics; Microgravity; Space Missions; Linear Time Invariant System; Attitude Control System; Velocity Profiles; Sattelite Bus

Mots clés: Ballottement; Modélisation

Domaines: Sciences de l'ingénieur [physics]; Physique [physics]; Mathématiques [math]; Informatique [cs]

Anthony Bourdelle, Laurent Burlion, Jean-Marc Biannic, Hélène Evain, Sabine Moreno, et al.. Towards New Controller Design Oriented Models of Propellant Sloshing in Observation Spacecraft. AIAA Scitech 2019 Forum, Nov 2019, San Diego, United States. ⟨10.2514/6.2019-0115⟩. ⟨hal-02502690⟩