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Experimental investigation of a hypersonic inlet with and without sidewall compression

Gruhn, Patrick und Gülhan, Ali (2011) Experimental investigation of a hypersonic inlet with and without sidewall compression. Journal of Propulsion and Power, Vol. 27 (No. 3). AIAA - American Institute of Aeronautics and Astronautics. (im Druck)

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Kurzfassung

The inlet of a Mach 8 cruise vehicle has been experimentally investigated in a hypersonic blow down wind tunnel with test times of up to 30s. Two test series have been carried out, the first one with a two-dimensional inlet configuration and the second one with the inlet featuring additional side-wall compression. The objective of the tests was to determine the performance of the inlet at on- and off-design conditions, i.e. at angle of attack and angle of yaw. Additionally, the starting behavior of the inlet has been determined, i.e. the contraction ratio at which the inlet starts. Results were interpreted from schlieren visualizations, IR thermography, static and Pitot pressure readings and mass flow measurements. The off-design investigation of both inlet configurations revealed the sensitivity of the inlet towards a cowl shock induced separation on the second compression ramp. If the cowl shock was not ensured to fall into the bleed duct behind the second ramp, no inlet flow could be established. The comparison of starting contraction ratios showed the advantage of the inlet with side-wall compression, i.e. the inlet with sidewall compression starts at higher contraction ratios.

Dokumentart:Zeitschriftenbeitrag
Titel:Experimental investigation of a hypersonic inlet with and without sidewall compression
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Gruhn, Patrickpatrick.gruhn@dlr.de
Gülhan, Aliali.guelhan@dlr.de
Datum:Mai 2011
Erschienen in:Journal of Propulsion and Power
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:Vol. 27
Verlag:AIAA - American Institute of Aeronautics and Astronautics
Status:im Druck
Stichwörter:Scramjet, Hypersonic Propulsion, Inlet, LAPCAT
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):L -- keine Zuordnung
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien
Hinterlegt von: Patrick Gruhn
Hinterlegt am:24 Mai 2011 14:43
Letzte Änderung:07 Feb 2013 20:34

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