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Experimental study of plume flow emanating from rectangular orifices

Werner, Ellen and Dettleff, Georg and Grabe, Martin and Hannemann, Klaus (2014) Experimental study of plume flow emanating from rectangular orifices. Space Propulsion 2014, 19. - 22. May 2014, Cologne, Germany.

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Official URL: http://www.propulsion2014.com/

Abstract

In recent years several microthrusters based on MEMS technology were developed. They differ from conventional axisymmetric thrusters with regard to two aspects concerning plume flow and impingement, as they typically feature a rectangular cross-section, and a nozzle exit flush mounted into the surrounding spacecraft structure. Both features lead to expect plume expansions which also differ from those of axisymmetric thrusters. Plume characterisation is necessary to assess and, when indicated, to minimize plume impingement effects. The latter arise out of the interaction between flow and spacecraft surfaces and comprise forces and moments, heat load and contamination, all of them in general undesired. As a precursor activity to studying plumes from micronozzles, we investigate plumes from rectangular orifices. We report on ongoing research, aiming at analysing the flow structure and revealing impingement potential. Initial results from measurements in the DLR Göttingen High-Vacuum Plume Test Facility for Chemical Thrusters, STG-CT, are presented.

Item URL in elib:https://elib.dlr.de/92867/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Paper-Number: 2980895
Title:Experimental study of plume flow emanating from rectangular orifices
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Werner, Ellenellen.werner (at) dlr.deUNSPECIFIED
Dettleff, Georggeorg.dettleff (at) dlr.deUNSPECIFIED
Grabe, Martinmartin.grabe (at) dlr.deUNSPECIFIED
Hannemann, Klausklaus.hannemann (at) dlr.deUNSPECIFIED
Date:2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-7
Series Name:Conference Proceedings on CD-ROM
Status:Published
Keywords:raefied. orifice, plume flow
Event Title:Space Propulsion 2014
Event Location:Cologne, Germany
Event Type:international Conference
Event Dates:19. - 22. May 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Numerische Verfahren und Simulation
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Micknaus, Ilka
Deposited On:05 Dec 2014 15:17
Last Modified:20 Mar 2015 16:12

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