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Experimental Investigation on the Influence of Sidewall Compression on the Flowfield of a Scramjet Inlet at Mach 7

Hohn, Oliver and Gülhan, Ali (2011) Experimental Investigation on the Influence of Sidewall Compression on the Flowfield of a Scramjet Inlet at Mach 7. AIAA. 17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 11.-14. Apr. 2011, San Francisco, USA.

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Abstract

In this paper, we present the results of an extensive measurement campaign to investigate the effect of external and internal sidewall compression as well as different contraction ratios on the performance of the flowfield of a scramjet inlet. Experiments were conducted in the H2K windtunnel of the DLR Cologne. The results show that external sidewall compression induces strong separation and vortex structures in the external part which impair the starting behaviour and inhibit any gains of the compression ratio. With internal sidewall compression, strong increases of the pressure ratio could be achieved and the inlet still started at internal contraction ratios well above the Kantrowitz-Limit.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Experimental Investigation on the Influence of Sidewall Compression on the Flowfield of a Scramjet Inlet at Mach 7
Authors:
AuthorsInstitution or Email of Authors
Hohn, Oliveroliver.hohn@dlr.de
Gülhan, Aliali.guelhan@dlr.de
Date:14 April 2011
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Publisher:AIAA
Status:Published
Keywords:airbreathing propulsion, scramjet, inlet, hypersonic, sidewall compression, starting behaviour
Event Title:17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference
Event Location:San Francisco, USA
Event Type:international Conference
Event Dates:11.-14. Apr. 2011
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignement
DLR - Research area:Space
DLR - Program:W - no assignement
DLR - Research theme (Project):W -- no assignement (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Oliver Hohn
Deposited On:24 May 2011 14:41
Last Modified:25 May 2011 07:55

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