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Experimental and Numerical Study of Launcher Configurations with Retro-Propulsion in the Hypersonic Wind Tunnel Cologne H2K

Gutsche, Kevin (2020) Experimental and Numerical Study of Launcher Configurations with Retro-Propulsion in the Hypersonic Wind Tunnel Cologne H2K. Master's, Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR).

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Abstract

Retro-propulsion, a deceleration technique where the thrust is pointed towards the direction of flight, is the driving technology for vertically landing, reusable launchers. Experiments, which are indispensable for the full comprehension of this technology, are accompanied by serious challenges. The key factors to facilitate meaningful results of supersonic and hypersonic retropropulsion experiments are addressed in this study. Similarity parameters for sub-scale experiments are evaluated, the interaction of retro-propulsion flows with the test facility is investigated, and condensation within these flows is analyzed. For this purpose, Computational Fluid Dynamics simulations were performed; subsequently, cold gas experiments for a generic retro-propulsion launcher configuration with a single, central nozzle were carried out in the Hypersonic Wind Tunnel Cologne H2K at the German Aerospace Center. Based on this data, an improved similarity parameter related to the exit condition of the engine exhaust flow is proposed and a universally applicable scaling law for supersonic retro-propulsion wind tunnel models is derived. Various condensation mitigation techniques for the conducted experiments are presented and their varying effectiveness is highlighted. Ultimately, improvements for future wind tunnel models and experimental setups are suggested. Thus, this study sets the groundwork for prospective experiments of retro-propulsion configurations in the H2K.

Item URL in elib:https://elib.dlr.de/140499/
Document Type:Thesis (Master's)
Title:Experimental and Numerical Study of Launcher Configurations with Retro-Propulsion in the Hypersonic Wind Tunnel Cologne H2K
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Gutsche, KevinUNSPECIFIEDUNSPECIFIED
Date:25 May 2020
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:95
Status:Unpublished
Keywords:Supersonic Retro Propulsion, Wind Tunnel Experiments
Institution:Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
Department:Institute of Aerodynamics and Flow Technology, Supersonic and Hypersonic Technologies
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 - Wiederverwendbare Raumfahrtsysteme (old)
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonoc and Hypersonic Technology
Deposited By: Marwege, Ansgar
Deposited On:16 Feb 2021 14:05
Last Modified:16 Feb 2021 14:05

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