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Analysis of a Three-Dimensional, High Pressure Ratio Scramjet Inlet with Variable Internal Contraction

Hohn, Oliver and Gülhan, Ali (2012) Analysis of a Three-Dimensional, High Pressure Ratio Scramjet Inlet with Variable Internal Contraction. 18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference, 24.-28. Sept. 2012, Tours, Frankreich.

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Abstract

We conducted an extensive experimental examination of the operational behavior of a three-dimensional scramjet inlet featuring a movable cowl to adapt the internal contraction according to the respective operation conditions. The experiments were conducted in the H2K wind tunnel of the DLR Cologne at Mach 7. The parameters investigated include different flight path angles (both angle of attack and angle of yaw), internal contraction ratio and Reynolds number. The critical internal contraction for inlet starting was found to agree well with common relations for starting of 3D-inlets. With increasing internal contraction, the inlet performance was found to improve and the inlet operated more stable. It was successfully tested for angles of attack up to ± 6° and angles of yaw up to 6°. Reynolds-Number had rather small effects on the performance and starting behavior of the inlet. Infraredthermography also gave some insight into the flow structure in the external part of the inlet.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Analysis of a Three-Dimensional, High Pressure Ratio Scramjet Inlet with Variable Internal Contraction
Authors:
AuthorsInstitution or Email of Authors
Hohn, Oliveroliver.hohn@dlr.de
Gülhan, Aliali.guelhan@dlr.de
Date:24 September 2012
Status:Published
Keywords:Scramjet, Hypersonic Propulsion, Inlet, Intake
Event Title:18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference
Event Location:Tours, Frankreich
Event Type:international Conference
Event Dates:24.-28. Sept. 2012
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignement
DLR - Research theme (Project):R -- no assignement
Location: Köln-Porz
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Über- und Hyperschalltechnologien
Deposited By: Oliver Hohn
Deposited On:14 Nov 2012 09:39
Last Modified:12 Dec 2013 21:50

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