Maxime Stuck thesis « Ablation d’un matériau de protection thermique en régime turbulent » (« Thermal protection material ablation in turbulent regime ») has been defended on December 12th 2023 (ISAE-Université de Toulouse). The thesis addresses the coupling between ablation and turbulence that triggers the apparition of surface roughnesses on hypersonic vehicles ablative TPS during […]
The second edition[1] of the European Symposium on laminar/turbulent Transition in Hypersonic Regime (TRANSITION 2023) has been organized by HyFAR-ARA (www.hyfar-ara.org) at Cap Sciences (Bordeaux, France) from October 4th to 6th 2023. During 3 days this event has gathered 50 scientists and engineers coming from Belgium, France, Germany, Netherlands, UK, US and issued from academic, […]
On May 5th 2023, the administration board of HyFAR-ARA officially validated CNES as new member of the association. The French space agency (CNES, Centre National d’Etudes Spatiales) is a public administration with industrial and commercial purposes. CNES is under supervision of the French Ministries of the Economy, Defense and Research. CNES missions is to steer […]
Establishing Vehicle Design Criteria to Postpone Transition Onset along Trajectories of Generic Flight Vehicles Frederik Jacobs 1*, Johan Steelant 2 * Corresponding author 1 Young Graduate Trainee, ESA/ESTEC, Keplerlaan 1, 2201AZ Noordwijk, The Netherlands, Frederik.Jacobs@esa.int 2 Senior Flight Vehicles & Aerothermodynamics Engineer, ESA/ESTEC, Keplerlaan 1, 2201AZ Noordwijk, The Netherlands, Johan.Steelant@esa.int Keywords: Transition visualization, High-speed […]
Adjoint-based linear sensitivity of a hypersonic boundary layer to steady wall blowing or heating Arthur POULAIN¹, Denis SIPP¹*, Cédric CONTENT¹, Georgios RIGAS², Eric GARNIER¹ ¹ DAAA, ONERA, Université Paris Saclay, F-92190 Meudon, France – denis.sipp@onera.fr, arthur.poulain@onera.fr, cedric.content@onera.fr, eric.garnier@onera.fr ² Department of Aeronautics, Imperial College London, London SW7 2AZ, United Kingdom – g.rigas@imperial.ac.uk * Corresponding author […]
Fundamental breakdown of second modes in the High Enthalpy Shock Tunnel Göttingen Divek SURUJHLAL 1 *, Alexander WAGNER 2 * Corresponding author 1German Aerospace Center (DLR) Göttingen, Department of Spacecraft surujhlal@dlr.de 2German Aerospace Center (DLR) Göttingen, Department of Spacecraft wagner@dlr.de Abstract Boundary layer transition in a hypersonic flow with a zero-pressure gradient takes […]
Experimental investigation of the transition process and boundary layer separation on a hypersonic cone-cylinder-flare geometry Clément Caillaud 2, Mathieu Lugrin ∗,1, Sébastien Esquieu 2 1DAAA, ONERA, Paris Saclay University, F-92190 Meudon – France 2CEA-CESTA, 15 Avenue des Sablières, Le Barp, France ∗mathieu.lugrin@onera.fr Experiments are conducted in the ONERA R2Ch (see figure 1) hypersonic wind tunnel to […]
OCTRA as Ultrasonically Absorptive Thermal Protection Material for Hypersonic Transition Suppression analyzed on a 7° Cone Viola WARTEMANN 1*, Alexander WAGNER2, Divek SURUJHLAL3, Giannino PONCHIO CAMILLO4, Christian DITTERT 5, Carolin RAUH 6 * Corresponding author 1* German Aerospace Center (DLR), Spacecraft Department, Institute of Aerodynamics and Flow Technology, Lilienthalplatz 7, 38108 Braunschweig, Germany, Viola.Wartemann@dlr.de 2 […]
Numerical investigation of the transition process and boundary layer separation on a hypersonic cone-cylinder-flare geometry Clément Caillaud*,1, Mathieu Lugrin 2, Sébastien Esquieu 1 1CEA-CESTA, 15 Avenue des Sablières, Le Barp, France 2DAAA, ONERA, Paris Saclay University, F-92190 Meudon – France *clement.caillaud@cea.fr Characterizing the boundary layer transition to turbulence around realistic hypersonic vehicles is a […]
A New Approach towards Tailored Thermal Protection Material for Hypersonic Boundary Layer Control Alexander Wagner1(*), Divek Surujhlal1, Carolin Rauh2, Martin Frieß2, Fiona Kessel2, Hendrik Weihs2 1Institute of Aerodynamic and Flow Technology, German Aerospace Center (DLR), Göttingen, Germany 2Institute of Structures and Design, German Aerospace Center (DLR), Stuttgart, Germany * Corresponding author: Alexander.Wagner@dlr.de […]