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Experimental investigation of a 3d stream-traced air-inlet for a scramjet engine

Gruhn, Patrick und Gülhan, Ali (2014) Experimental investigation of a 3d stream-traced air-inlet for a scramjet engine. Space Propulsion 2014, 19.-22. Mai 2014, Köln, Deutschland.

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Kurzfassung

A model of a scramjet inlet was investigated experimentally in the hypersonic wind tunnel H2K of DLR in Cologne. Test were carried out at four different Mach numbers between M∞ = 5.3 and M∞ = 8.7, and at Reynolds numbers between Re = 1.7·106 and Re = 10.1·106 (reference length lref = 0.532m). The angle of attack was varied from α = -2° to α = 2°, and the sideslip angle was varied from β = 0° to β = 2° in between different test runs. The internal contraction ratio of the inlet was varied between I = 1.17 and I = 1.52 by the use of cowl inserts that changed the position of the cowls leading edge. Tests with an optional passive bleed system were performed, too. For all tests, the inlet model was connected to a throttle device that allowed varying the back pressure during the test run in order to record performance mappings. Next to simulating the back-pressure, the throttle was used to measure the captured mass flow. Further information was gathered by 37 static pressure ports distributed over the surface of the inlet and three Pitot pressure probes located in the inlet exit plane. Schlieren visualisation was used to analyse the external flow field. The tests showed that reliable inlet starting was only observed for the lowest internal contraction ratio, i.e. with the most swept-back leading edge of the cowl. For this configuration reliable, robust operation of the inlet was observed at on- and off-design conditions. Further on, it was shown that the inlet’s performance fulfils the design requirements.

elib-URL des Eintrags:https://elib.dlr.de/90215/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Experimental investigation of a 3d stream-traced air-inlet for a scramjet engine
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Gruhn, Patrickpatrick.gruhn (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Gülhan, AliAli.Guelhan (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:August 2014
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Seitenbereich:Seiten 1-9
Name der Reihe:ConfereanceProceedings on CD-ROM
Status:veröffentlicht
Stichwörter:scramjet, inlet, hypersonic flow
Veranstaltungstitel:Space Propulsion 2014
Veranstaltungsort:Köln, Deutschland
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:19.-22. Mai 2014
Veranstalter :3AF
HGF - Forschungsbereich:keine Zuordnung
HGF - Programm:keine Zuordnung
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:keine Zuordnung
DLR - Forschungsgebiet:keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):keine Zuordnung
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien
Hinterlegt von: Gruhn, Patrick
Hinterlegt am:28 Okt 2014 11:31
Letzte Änderung:28 Okt 2014 11:31

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