Launch Vehicle Base Buffeting - Recent Experimental and Numerical Investigations
Hannemann, Klaus and Lüdecke, Heinrich and Pallegoix, Jean-Francois and Ollivier, Arnaud and Lambaré, Hadrien and Maseland, Hans and Geurts, E. G. M. and Frey, Manuel and Deck, Sebastien and Schrijer, F.F.J. and Scarano, F. and Schwane, Richard (2011) Launch Vehicle Base Buffeting - Recent Experimental and Numerical Investigations. 7th European Symposium on Aerothermodynamics for Space Vehicles, 9. Mai - 12. Mai 2011, Brugge, Belgien.
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During atmospheric ascent of launcher configurations, a massively separated flow environment in the base region of the launcher can generate strong low frequency wall pressure fluctuations. The nozzle structure can be subjected to dynamic loads resulting from these pressure fluctuations. The loads are usually most severe during the high dynamic pressure phase of flight at transonic speeds and the aerodynamic excitation can induce a response of the structural modes called buffeting. In order to obtain a deeper insight into base buffeting related to the Ariane 5 launch vehicle, a set of experiments was performed in the DNW HST wind tunnel in close cooperation with the utilization of modern CFD tools (hybrid RANS/LES). During the test campaign a 1/60 scale Ariane 5 launcher test article was utilized, and detailed unsteady pressure measurements in the base region of the model were for the first time performed in conjunction with time resolved velocity field measurements using PIV. The work was performed in the framework of the ESA TRP “Unsteady Subscale Force Measurements within a Launch Vehicle Base Buffeting Environment”.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||Launch Vehicle Base Buffeting - Recent Experimental and Numerical Investigations|
|In ISI Web of Science:||No|
|Series Name:||Conference Proceedings|
|Keywords:||CFD, Experiment, Launcher Base Flow, Buffeting Reduction|
|Event Title:||7th European Symposium on Aerothermodynamics for Space Vehicles|
|Event Location:||Brugge, Belgien|
|Event Type:||international Conference|
|Event Dates:||9. Mai - 12. Mai 2011|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Raumfahrt|
|HGF - Program Themes:||R RP - Raumtransport|
|DLR - Research area:||Raumfahrt|
|DLR - Program:||R RP - Raumtransport|
|DLR - Research theme (Project):||R - Raumfahrzeugsysteme - Anlagen u. Messtechnik|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Spacecraft|
|Deposited By:||Dagmar Brennecke-Hosseinzadeh|
|Deposited On:||21 Nov 2011 13:49|
|Last Modified:||21 Nov 2011 13:49|
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