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Experimental Investigation of the Starting Behavior of a three-dimensional SCRamjet Intake with a Movable Cowl and Exchangeable Cowl Geometry at Different Mach Numbers

Flock, Andreas K und Gülhan, Ali (2014) Experimental Investigation of the Starting Behavior of a three-dimensional SCRamjet Intake with a Movable Cowl and Exchangeable Cowl Geometry at Different Mach Numbers. In: AIAA AVIATION 2014 -19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference 2014 (2934), Seiten 1-12. 19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2014-06-14 - 2014-06-19, Atlanta, USA. doi: 10.2514/6.2014-2934.

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Kurzfassung

In the current work we focused our research on the intake starting process which is crucial for proper performance of Supersonic Combustion Ramjet engines. To this date there is no generally valid method to accurately predict intake starting for a certain three-dimensional SCRamjet intake configuration. Therefore we conducted starting experiments at Mach 6 and 7 in a blow down wind tunnel on a three dimensional intake model, equipped with a movable cowl and therefore variable internal contraction. Our focus was on the influence of the cowl geometry, the free stream Mach number, the angle of attack and the ratio of total temperature in the free stream to model wall temperature on intake starting. While the influence of total temperature was minor in the temperature ranges considered, the effect of angle of attack was twofold: when the intake was pitched, that the leading edge shock decreased in strength, the intake showed improved starting characteristics. For a pitch angle in the opposite direction and for increasing yaw angles, intake starting was prevented. For a decrease in free stream Mach number from 7 to 6, the starting internal contraction ratio was delayed from 1.92 to 1.73, for the v-shaped lip configuration. Exchanging the v-shaped lip with a straight lip geometry, improved intake starting and at a constant free stream Mach number of 7, the maximum internal contraction for starting moved from 1.92 to 2.12.

elib-URL des Eintrags:https://elib.dlr.de/90382/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Experimental Investigation of the Starting Behavior of a three-dimensional SCRamjet Intake with a Movable Cowl and Exchangeable Cowl Geometry at Different Mach Numbers
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Flock, Andreas Kandreas.flock (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Gülhan, AliAli.Guelhan (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2014
Erschienen in:AIAA AVIATION 2014 -19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference 2014
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Nein
DOI:10.2514/6.2014-2934
Seitenbereich:Seiten 1-12
Name der Reihe:Conference Proceedings online
Status:veröffentlicht
Stichwörter:SCRamjet, Intake, Hypersonics, Inlet, Inlet-Starting
Veranstaltungstitel:19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference
Veranstaltungsort:Atlanta, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:14 Juni 2014
Veranstaltungsende:19 Juni 2014
Veranstalter :AIAA
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Raumtransport
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R RP - Raumtransport
DLR - Teilgebiet (Projekt, Vorhaben):R - Raumfahrzeugsysteme - Systemanalyse Raumtransport (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien
Hinterlegt von: Flock, Andreas
Hinterlegt am:19 Jan 2015 16:06
Letzte Änderung:24 Apr 2024 19:56

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