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Launch Vehicle Base Buffeting - Recent Experimental and Numerical Investigations

Hannemann, Klaus and Lüdeke, 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)
Title:Launch Vehicle Base Buffeting - Recent Experimental and Numerical Investigations
AuthorsInstitution or Email of Authors
Hannemann, Klausklaus.hannemann@dlr.de
Lüdeke, Heinrichheinrich.luedeke@dlr.de
Pallegoix, Jean-FrancoisEADS Astrium, Les Mureaux
Ollivier, ArnaudEADS Astrium, Les Mureaux
Lambaré, HadrienCNES
Maseland, HansNLR
Geurts, E. G. M.NLR
Frey, ManuelEADS Astrium, München
Deck, SebastienONERA
Schrijer, F.F.J.TU Delft
Scarano, F.TU Delft
Schwane, RichardESTEC-ESA
Refereed publication:No
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:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Anlagen u. Messtechnik
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Dagmar Brennecke-Hosseinzadeh
Deposited On:21 Nov 2011 13:49
Last Modified:22 Dec 2015 09:19

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