Models for liquid impact onboard Sloshsat FLEVO

Vreeburg, J.P.B.; Chato, David J.

doi:10.2514/6.2000-5152

Cited by 16 publications

(8 citation statements)

References 4 publications

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“…In order to design controllers, simplified mechanical-inspired models were developed. In these models, the fluid behavior is described by a mechanical system such as spring-mass, pendulum [13], free-mass or mass constrained on a surface [14,15]. Equivalent Mechanical Models can be used to describe a complete satellite system including solar panels [16].…”

Section: Fig 2 System Block-diagram With An Open-loop Cfd Modelmentioning

confidence: 99%

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

Bourdelle¹,

Burlion²,

Biannic³

et al. 2019

AIAA Scitech 2019 Forum

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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.

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Section: Fig 2 System Block-diagram With An Open-loop Cfd Modelmentioning

confidence: 99%

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

Bourdelle¹,

Burlion²,

Biannic³

et al. 2019

AIAA Scitech 2019 Forum

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“…Cette interférence va exciter de plus en plus le ballottement, jusqu'à la non-controlabilité et la destruction de l'appareil. Les références [1] et [27] peuvent etre consultées pour une liste des avions qui ont eu des problèmesà cause du ballottement ou [31] pour des détailles sur la mission spatiale NEAR qui a dûêtre retardéeà cause des mêmes raisons.…”

Section: Introductionunclassified

Contrôle actif des vibrations dans un système fluide/structure

Robu

Baudouin

Prieur³

2011

ournal Européen des Systèmes Automatisés

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…losh is a pressing problem for spacecraft stability and control. Propellant remaining inside a tank may be excited by the motion of the vehicle, and reaction forces and moments caused by slosh can degrade the pointing accuracy of the system, [21,22]. For example, in preparation for orbital insertion of the payload, the upper-stage of a rocket undergoes a series of maneuvers which may lead to large amplitude sloshing motion of the propellants.…”

Section: Introductionmentioning

confidence: 99%

“…Numerical solution to slosh has been emerging in recent times, owing to the major advances in computational capabilities. CFD models to make slosh predictions during the high acceleration ascent phases of a rocket have been used, although very little work has been done in cases of very-low accelerations when the vehicle is in space, [20,22]. When available, predictions can be used to validate the performance of simpler models, and a direct comparison with CFD-predicted damping is of significant interest, however, these models dynamic mesh simulations, which allow the container to move in 6-DOF with feedback from the liquid acting on the tank walls.…”

Section: Introductionmentioning

confidence: 99%

“…Other studies have focused on analyzing available flight data to identify conditions leading to mission failure. The FLEVO project, under the direction of the National Aerospace Laboratory (The Netherlands) has been the most substantial effort devoted to fill the gap between numerical simulations, [13,20], and the development of an experimental framework to measure and characterize slosh under microgravity, [22].…”

Section: Introductionmentioning

confidence: 99%

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Parametric Study of a Propellant Tank Slosh Baffle

Chintalapati

Kirk²

2008

44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference &Amp;amp; Exhibit

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A current problem that severely affects the performance of spacecraft is related to slosh dynamics in liquid propellant tanks under microgravity conditions. Accurate prediction of the slosh dynamics is critical for successful mission planning and may impact vehicle control and positioning during rendezvous, docking, and reorientation maneuvers. The purpose of this work is to assess the performance of various sloshmitigating baffle designs and configurations using computational fluid dynamics. This work develops metrics, including wall wetting, peak slosh amplitude, and bulk fluid motion, to assess the relevance of a particular baffle geometry and placement within the tank for a prescribed bulk fluid motion over a range of acceleration levels. The two-and three-dimensional studies are used to assess the slosh model's sensitivity to grid resolution, laminar versus turbulent flow models, and Bond number scaling. The results are used to develop a foundation on which to build a full six-degree-of-freedom dynamic mesh model, allowing for fluidforce interaction with a propellant tank, which will be benchmarked against low-gravity slosh flight data.

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Models for liquid impact onboard Sloshsat FLEVO

Cited by 16 publications

References 4 publications

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

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

Contrôle actif des vibrations dans un système fluide/structure

Parametric Study of a Propellant Tank Slosh Baffle

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