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Transition Measurements on Slender and Blunt Bodies in Ludwieg Tubes at Mach 6

Munoz, Federico and Ali, Syed Raza Christopher and Leinemann, Madlen and Radespiel, Rolf and Semper, Michael and Cummings, Russel M. and Theiss, Alexander (2019) Transition Measurements on Slender and Blunt Bodies in Ludwieg Tubes at Mach 6. In: AIAA Scitech Forum, 2019. AIAA Scitech 2019 Forum, 07.-11. Januar 2019, San Diego, CA, USA. DOI: 10.2514/6.2019-0626 ISBN 978-162410578-4

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Official URL: https://scitech.aiaa.org/

Abstract

In the present study, transition measurements are conducted on slender and blunt bodies in two different facilities. A 7° half-angle cone is used as a slender body and an Apollo shaped capsule as a blunt body. The measurements are performed in the HLB of the TU Braunschweig in Germany and in the HHK-6 of the US Air Force Academy. Pressure sensors are applied to investigate transition mechanisms, while infrared thermography and coaxial thermocouples are used to detect transition location. A recent thorough investigation of the free stream disturbance is used as a basis to understand the effect of noise level on the transition location and dominating mechanism. Although both facilities are almost identical transition tends to occur earlier in the HHK-6. The maximum amplitude of the measured second mode instability was higher in the HLB. Laminar-turbulent boundary layer transition on blunt bodies was influenced as well, but to a lesser extent.

Item URL in elib:https://elib.dlr.de/126059/
Document Type:Conference or Workshop Item (Speech)
Title:Transition Measurements on Slender and Blunt Bodies in Ludwieg Tubes at Mach 6
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Munoz, Federicof.munoz (at) tu-braunschweig.deUNSPECIFIED
Ali, Syed Raza Christophers.ali (at) tu-bs.deUNSPECIFIED
Leinemann, MadlenTU BraunschweigUNSPECIFIED
Radespiel, RolfTU-BS, ISM, r.radespiel (at) tu-braunschweig.deUNSPECIFIED
Semper, MichaelU.S. Air Force AcademyUNSPECIFIED
Cummings, Russel M.Russ.Cummings (at) usafa.eduUNSPECIFIED
Theiss, Alexanderalexander.theiss (at) dlr.deUNSPECIFIED
Date:January 2019
Journal or Publication Title:AIAA Scitech Forum, 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.2514/6.2019-0626
ISBN:978-162410578-4
Status:Published
Keywords:hypersonic boundary-layer transition, wind tunnel experiments, transient growth
Event Title:AIAA Scitech 2019 Forum
Event Location:San Diego, CA, USA
Event Type:international Conference
Event Dates:07.-11. Januar 2019
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO
Deposited By: Theiß, Alexander
Deposited On:21 Jan 2019 14:11
Last Modified:02 Aug 2019 13:18

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