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Advanced GNC-oriented modeling and simulation of Vertical Landing vehicles with fuel slosh dynamics

Fari, Stefano and Seelbinder, David and Theil, Stephan (2023) Advanced GNC-oriented modeling and simulation of Vertical Landing vehicles with fuel slosh dynamics. Acta Astronautica. Elsevier. doi: 10.1016/j.actaastro.2022.12.035. ISSN 0094-5765.

[img] PDF - Only accessible within DLR bis April 2025 - Postprint version (accepted manuscript)

Official URL: https://www.sciencedirect.com/science/article/pii/S009457652200707X


This paper introduces a flexible framework to enable high-fidelity simulations of the fuel slosh dynamics for verification of the Guidance, Navigation and Control (GNC) algorithms. The sloshing phenomenon must be tackled during the control system design phase and the GNC software run and validated within appropriate simulation frameworks. Equivalent mechanical models can well approximate sloshing under specific assumptions, allowing the derivation of the multibody vehicle’s equations of motion; however, while suitable for analysis and control synthesis purposes, this approach presents several limitations for implementation as a simulation model. In this work the multibody plant embedding slosh dynamics is modeled by means of the DLR’s Vertical Landing Vehicles Library (VLVLib) written using the object-oriented Modelica modeling language. The advantages of using Modelica are explored throughout the paper. Given that control synthesis, analyses and simulation campaigns are usually performed in the Matlab/Simulink environment, a core point of the proposed solution is to achieve a good synergy within the latter and the Modelica plant model with the least readaptation burden for the developer. The strategies to achieve a full integration and verification tool chain are illustrated. The potential of this approach is demonstrated via two different test cases: a lunar landing scenario of the ALINA spacecraft developed by PTS, and CALLISTO reusable rocket demonstrator.

Item URL in elib:https://elib.dlr.de/193063/
Document Type:Article
Title:Advanced GNC-oriented modeling and simulation of Vertical Landing vehicles with fuel slosh dynamics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Fari, StefanoUNSPECIFIEDhttps://orcid.org/0000-0001-5595-6905UNSPECIFIED
Seelbinder, DavidUNSPECIFIEDhttps://orcid.org/0000-0003-4080-3169UNSPECIFIED
Theil, StephanUNSPECIFIEDhttps://orcid.org/0000-0002-5346-8091UNSPECIFIED
Date:April 2023
Journal or Publication Title:Acta Astronautica
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:Slosh dynamics, Modelica, Object-oriented modeling, Simulation, GNC, Vertical landing vehicle, Lunar lander, Reusable launch vehicle
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Navigation and Control Systems
Deposited By: Fari, Stefano
Deposited On:16 Jan 2023 09:28
Last Modified:24 Jan 2023 09:27

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