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Reconstruction of Wind Tunnel Tests using CFD for a Reusable First Stage during Rocket Retro-Propulsion

Bykerk, Tamas and Kirchheck, Daniel and Karl, Sebastian (2022) Reconstruction of Wind Tunnel Tests using CFD for a Reusable First Stage during Rocket Retro-Propulsion. In: 9th European Conference for Aeronautics and Space Sciences (EUCASS) 2022, pp. 1-14. 9th European Conference for Aeronautics and Space Sciences (EUCASS) 2022, 2022-06-27 - 2022-07-01, Lille, France.

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Official URL: https://eucass-3af-2022.eu/

Abstract

The RETPRO project (Validation of Wind Tunnel Test and CFD Techniques for Retropropulsion), as part of ESA's Future Launcher Preparatory Programme, aims at preparing the tools, necessary for a reliable design and simulation of future rocket launchers or spacecraft. A particular focus is assigned to vertical take-off and landing configurations using retro propulsion as part of their control concept for entry, descent, and landing manoeuvres. Wind tunnel tests and computational fluid dynamics are used to generate a comprehensive aerodynamic database, which is required for flight dynamics simulations, enabling mission and performance analyses of possible future launcher designs. This paper focuses on the presentation and discussion of steady-state numerical simulation results which reconstruct selected wind tunnel tests during both powered and unpowered descent phases. The CFD simulations cover a Mach number range from 2 up to 7, with dry air used to model the exhaust plume. Typical flow topologies and features are discussed, with quantitative results coming from a comparison of force balance and surface pressure measurements between experimental results and CFD simulations. Schlieren images from the experiments are used to evaluate the plume structure and shock stand-off distances. For the unpowered descent cases the agreement between schlieren images, force and pressure measurements is extremely strong. During powered descent the basic plume structure is captured well despite the highly unsteady and fluctuating flow field. Pressure and force measurements gave mixed results, but overall the studies show that RANS simulations perform well compared to experimental data.

Item URL in elib:https://elib.dlr.de/187242/
Document Type:Conference or Workshop Item (Speech)
Title:Reconstruction of Wind Tunnel Tests using CFD for a Reusable First Stage during Rocket Retro-Propulsion
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Bykerk, TamasUNSPECIFIEDhttps://orcid.org/0000-0001-8662-3484UNSPECIFIED
Kirchheck, DanielUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Karl, SebastianUNSPECIFIEDhttps://orcid.org/0000-0002-5558-6673UNSPECIFIED
Date:1 July 2022
Journal or Publication Title:9th European Conference for Aeronautics and Space Sciences (EUCASS) 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-14
Editors:
EditorsEmailEditor's ORCID iDORCID Put Code
UNSPECIFIEDEUCASSUNSPECIFIEDUNSPECIFIED
Status:Published
Keywords:Hypersonic, Re-usable, Retro-Propulsion, CFD, Wind Tunnel Test
Event Title:9th European Conference for Aeronautics and Space Sciences (EUCASS) 2022
Event Location:Lille, France
Event Type:international Conference
Event Start Date:27 June 2022
Event End Date:1 July 2022
Organizer:EUCASS
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 - Reusable Space Systems and Propulsion Technology
Location: Göttingen , Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Bykerk, Tamas
Deposited On:18 Aug 2022 17:59
Last Modified:24 Apr 2024 20:48

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