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Numerical Investigation of Two Interacting Parallel Thruster-Plumes and Comparison to Experiment

Grabe, Martin and Holz, André and Ziegenhagen, Stefan and Hannemann, Klaus (2014) Numerical Investigation of Two Interacting Parallel Thruster-Plumes and Comparison to Experiment. AIP Conference Proceedings, 1628 (581). Americen Institut of Physics (AIP). doi: 10.1063/1.4902645. ISBN 978-0-7354-1265-1. ISSN 0094-243X.

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Official URL: http://scitation.aip.org/content/aip/proceeding/aipcp/1628?ver=pdfcov


Clusters of orbital thrusters are an attractive option to achieve graduated thrust levels and increased redundancy with available hardware, but the heavily under-expanded plumes of chemical attitude control thrusters placed in close proximity will interact, leading to a local amplification of downstream fluxes and of back-flow onto the spacecraft. The interaction of two similar, parallel, axi-symmetric cold-gas model thrusters has recently been studied in the DLR High-Vacuum Plume Test Facility STG under space-like vacuum conditions, employing a Patterson-type impact pressure probe with slot orifice. We reproduce a selection of these experiments numerically, and emphasise that a comparison of numerical results to the measured data is not straight-forward. The signal of the probe used in the experiments must be interpreted according to the degree of rarefaction and local flow Mach number, and both vary dramatically thoughout the flow-field. We present a procedure to reconstruct the probe signal by post-processing the numerically obtained flow-field data and show that agreement to the experimental results is then improved. Features of the investigated cold-gas thruster plume interaction are discussed on the basis of the numerical results.

Item URL in elib:https://elib.dlr.de/90626/
Document Type:Editorship of Proceedings
Additional Information:Published: 02 Dezember 2014
Title:Numerical Investigation of Two Interacting Parallel Thruster-Plumes and Comparison to Experiment
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Grabe, Martinmartin.grabe (at) dlr.deUNSPECIFIED
Holz, Andréandre.holz (at) dlr.deUNSPECIFIED
Ziegenhagen, StefanStefan.Ziegenhagen (at) astrium.eads.netUNSPECIFIED
Hannemann, Klausklaus.hannemann (at) dlr.deUNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1063/1.4902645
Page Range:pp. 581-588
Publisher:Americen Institut of Physics (AIP)
Series Name:AIP Conference Proceedings
Keywords:Plume interaction, DSMC, Patterson probe
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 - Raumfahrzeugsysteme - Anlagen u. Messtechnik (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Micknaus, Ilka
Deposited On:08 Dec 2014 12:36
Last Modified:08 Dec 2014 12:36

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