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Active slosh control and damping - Simulation and experiment

Konopka, Martin and De Rose, Francesco and Strauch, Hans and Jetzschmann, Christina and Darkow, Nicolas and Gerstmann, Jens (2018) Active slosh control and damping - Simulation and experiment. Acta Astronautica. Elsevier. doi: https://doi.org/10.1016/j.actaastro.2018.06.055. ISSN 0094-5765.

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Future reignitable cryogenic upper stages perform long ballistic coasting phases in earth orbit. During those coasting phases, the tanks are loaded with liquid propellants and propellant sloshing occurs due to external disturbances or attitude change maneuvers. The sloshing propellant motion induces reaction forces and torques acting on the space vehicle structure, e.g. rocket upper stages. To keep the upper stage at the desired target attitude, the guidance, navigation, and control (GNC) algorithm commands thruster firings to counter the fluid forces. At ArianeGroup (AG), the Final Phase Simulator FiPS aims at simulating the coupling between fluid mechanics, GNC, and rigid body dynamics. To validate the coupling of GNC with linear lateral water sloshing, on ground experiments at the German Aerospace Center's Hexapod sloshing facility were performed. It was demonstrated that the developed control algorithm is able to damp the linear lateral sloshing within 4 s. FiPS simulations of the open and closed loop sloshing experiments showed that the experimental forces are matched with an uncertainty of less then 5% for open loop phases. For closed-loop phases the simulations match the experimental damping intervals with an accuracy of better than 5% and the force amplitude with an accuracy of about 20%.

Item URL in elib:https://elib.dlr.de/121862/
Document Type:Article
Title:Active slosh control and damping - Simulation and experiment
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Konopka, MartinMartin.Konopka (at) ariane.groupUNSPECIFIED
De Rose, FrancescoAriane GroupUNSPECIFIED
Strauch, HansHans.Strauch (at) airbus.comUNSPECIFIED
Jetzschmann, ChristinaAirbus Defence & Space GmbHUNSPECIFIED
Darkow, NicolasNicolas.Darkow (at) dlr.deUNSPECIFIED
Gerstmann, JensJens.Gerstmann (at) dlr.deUNSPECIFIED
Journal or Publication Title:Acta Astronautica
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :https://doi.org/10.1016/j.actaastro.2018.06.055
Keywords:Sloshing Computational fluid mechanics Control GNC Coupled simulation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Leitprojekt - Forschungsverbund Oberstufe (old)
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Transport and Propulsion System
Deposited By: Behnke, Manuela
Deposited On:27 Sep 2018 11:40
Last Modified:27 Sep 2018 11:40

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