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

Hohn, Oliver und 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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Kurzfassung

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.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Analysis of a Three-Dimensional, High Pressure Ratio Scramjet Inlet with Variable Internal Contraction
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Hohn, Oliveroliver.hohn@dlr.de
Gülhan, Aliali.guelhan@dlr.de
Datum:24 September 2012
Status:veröffentlicht
Stichwörter:Scramjet, Hypersonic Propulsion, Inlet, Intake
Veranstaltungstitel:18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference
Veranstaltungsort:Tours, Frankreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:24.-28. Sept. 2012
Veranstalter :AIAA
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):R -- keine Zuordnung
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien
Hinterlegt von: Oliver Hohn
Hinterlegt am:14 Nov 2012 09:39
Letzte Änderung:12 Dez 2013 21:50

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