Petervari, René and Wagner, Alexander and Laurence, Stuart and Wartemann, Viola and Hannemann, Klaus (2014) Quantitative Auswertung von Hochgeschwindigkeitsschlierenaufnahmen der hypersonischen Grenzschichtinstabilität am Hochenthalpiekanal Göttingen. 19. DGLR-Fachsymposium der STAB, 2014-11-04 - 2014-11-05, München, Deutschland.
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Official URL: http://www.stab2014.tum.de/
Abstract
For the first time the influence of ultrasonically absorptive carbon-carbon material on hypersonic laminar to turbulent boundary-layer transition was investigated experimentally. A 7° half-angle blunted cone with a nose radius of 2.5 mm and a total length of 1077 mm was tested at zero angle of attack in the High Enthalpy Shock Tunnel Göttingen (HEG) of the German Aerospace Center (DLR) at Mach 7.5. One third of the model surface in circumferential direction was equipped with a in-house manufactured ultrasonically absorptive carbon-carbon material with random microstructure for passive transition control. The remaining model surface consisted of polished steel and served as reference surface. The study revealed a clear damping of the second-mode instabilities and a delay of boundary layer transition along the ultrasonically absorptive carbon-carbon insert.
Item URL in elib: | https://elib.dlr.de/91745/ | ||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||
Title: | Quantitative Auswertung von Hochgeschwindigkeitsschlierenaufnahmen der hypersonischen Grenzschichtinstabilität am Hochenthalpiekanal Göttingen | ||||||||||||||||||||||||
Authors: |
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Date: | 2014 | ||||||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||
Series Name: | Jahresbericht 2014 | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Passive Hypersonic Boundary Layer Transition Control, Ultrasonically Absorptive Carbon-Carbon Ceramic, High Enthalpy Shock Tunnel Göttingen (HEG) | ||||||||||||||||||||||||
Event Title: | 19. DGLR-Fachsymposium der STAB | ||||||||||||||||||||||||
Event Location: | München, Deutschland | ||||||||||||||||||||||||
Event Type: | national Conference | ||||||||||||||||||||||||
Event Start Date: | 4 November 2014 | ||||||||||||||||||||||||
Event End Date: | 5 November 2014 | ||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||||||
HGF - Program Themes: | Space Transportation | ||||||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||
DLR - Program: | R RP - Space Transportation | ||||||||||||||||||||||||
DLR - Research theme (Project): | R - Raumfahrzeugsysteme - Numerische Verfahren und Simulation (old) | ||||||||||||||||||||||||
Location: | Göttingen | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Spacecraft | ||||||||||||||||||||||||
Deposited By: | Micknaus, Ilka | ||||||||||||||||||||||||
Deposited On: | 21 Nov 2014 09:57 | ||||||||||||||||||||||||
Last Modified: | 24 Apr 2024 19:57 |
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