Hugo Noubel, Viviana Lago, Céline Baranger

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-413

This paper presents an experimental investigation focused on aerodynamic forces and shock waves
of a waverider. The study is carried out in the wind tunnel MARHy located at the ICARE laboratory of
CNRS-Orleans. The facility can recreate the atmospheric re-entry flight of any vehicle in terms of viscous
parameter and Knudsen number. The present work was carried out at hypersonic flow condition with a
Mach number 20 and low density equivalent to 100 km of altitude. The model is a waverider optimized
for optimal Lift to Drag ratio at Mach 10 and 50 km of altitude. The objective of this work is to analyse
the behaviour of this waverider at high Mach number and altitude. The investigation of aerodynamic
forces shows the waverider falls down for angles of attack higher than 15°. To confirm and explain this
stall density inside the shock wave have been analysed from flow field a visualisation. This study shows
a phenomenon of separation bubble which imply a constant pressure at the waverider surface. The
bubble is observed thanks to luminosity intensity profiles and showing the displacement and increase of
this bubble with the local rarefaction degree. As a consequence the shear layer can not reattach due to
the separation bubble so the lift force decrease and the waverider falls down.

Read the full paper here

In Categories: High-Speed Aerodynamics and Aerothermodynamics, HiSST 2022
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