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Surface-pressure measurements of second-mode instability in quiet hypersonic flow

Estorf, Malte and Radespiel, Rolf and Schneider, Steven P. and Johnson, Heath B. and Hein, Stefan (2007) Surface-pressure measurements of second-mode instability in quiet hypersonic flow. 46th AIAA Aerospace Sciences Meeting and Exhibit, 2008-01-07 - 2008-01-10, Reno, NV (USA).

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Surface pressure-sensors have been used to measure the second-mode boundary layer instability on a 7<sup>o</sup> half-angle sharp cone at zero angle of attack in the quiet Mach-6 wind tunnel at Purdue and in the conventional Mach-6 wind tunnel in Braunschweig. The measurements were made using a stream-wise array of high-frequency sensors. They show the second-mode waves in quiet and noisy flow. The quiet flow data is compared to results in noisy flow. The signal quality allows for the calculation of amplification rates, which are compared to the results of linear stability computations.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Surface-pressure measurements of second-mode instability in quiet hypersonic flow
AuthorsInstitution or Email of Authors
Estorf, MalteTU Braunschweig
Radespiel, RolfTU Braunschweig
Schneider, Steven P.Purdue University
Johnson, Heath B.University of Minnesota
Date:December 2007
Refereed publication:No
In ISI Web of Science:No
Series Name:AIAA Paper 2008-1153
Keywords:laminar-turbulent transition, hypersonic boundary layer, second mode instability, surface pressure measurements
Event Title:46th AIAA Aerospace Sciences Meeting and Exhibit
Event Location:Reno, NV (USA)
Event Type:international Conference
Event Dates:2008-01-07 - 2008-01-10
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Dr.-Ing. Stefan Hein
Deposited On:28 Jan 2008
Last Modified:15 Jan 2010 02:05

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