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Hypersonic Retrograde Propulsion Experiments - A Basis for Validation of CFD within RETPRO

Kirchheck, Daniel and Marwege, Ansgar and Klevanski, Josef and Gülhan, Ali (2022) Hypersonic Retrograde Propulsion Experiments - A Basis for Validation of CFD within RETPRO. 9th European Conference for Aeronautics and Space Sciences (EUCASS), 27. Juni - 01. Juli 2022, Lille, Frankreich. doi: 10.13009/EUCASS2022-4435.

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Official URL: https://doi.org/10.13009/EUCASS2022-4435


The paper focuses on wind tunnel tests of the hypersonic re-entry part of the RETPRO descent trajectory. The re-usable rocket launcher configuration is investigated including active retro-propulsion at Mach 5.3 and 7.0 in the Hypersonic Wind Tunnel (H2K) of DLR, Cologne. Results from high-speed Schlieren imaging, force and unsteady wall pressure measurements are output for CFD accuracy assessment and validation. Variations of the number of active engines, thrust coefficient, jet temperature and angle of attack are performed to gather detailed information on sensitivities of characteristic mean and dynamic flow features. It is shown that the dynamic behavior of the retro-propulsion flow field is significantly altered by the engine configuration. A stable quasi-steady mode with overlaying shock oscillation is found for the one engine case, while three engine operation leads to a turbulent flow field with random flipping between a short and a long jet penetration mode. The oscillation frequency and temporal characteristics of the retro-propulsion flow field are found to be sensitive to the thrust coefficient and jet reservoir temperature.

Item URL in elib:https://elib.dlr.de/190741/
Document Type:Conference or Workshop Item (Speech)
Title:Hypersonic Retrograde Propulsion Experiments - A Basis for Validation of CFD within RETPRO
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Klevanski, JosefUNSPECIFIEDhttps://orcid.org/0009-0002-4336-1116UNSPECIFIED
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:RETPRO, retro-propulsion, wind tunnel testing
Event Title:9th European Conference for Aeronautics and Space Sciences (EUCASS)
Event Location:Lille, Frankreich
Event Type:international Conference
Event Dates:27. Juni - 01. Juli 2022
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: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Kirchheck, Daniel
Deposited On:12 Dec 2022 11:10
Last Modified:12 Dec 2022 11:10

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