Results from an in situ analysis of ablative heat shield materials based on stereoscopic photogrammetry during plasma wind tunnel testing are presented. A carbon fiber preform material sample has been investigated in a high-enthalpy airflow corresponding to a Hayabusa reentry condition at a 78 km altitude. The applied photogrammetry uses two digital single lens reflex cameras triggered at to acquire images simultaneously from two different perspectives of the sample exposed to the high-speed flow. The photogrammetric analysis resolves the surface with , approximately 400 dpi, allowing the in situ analysis of the recession phenomena of ablators. Material inhomogeneities are identified during the ablation process, and surface recession is derived with an accuracy of . The method is a useful tool for the investigation of temporally resolved volumetric ablation phenomena in low-density carbon phenolic materials.
Photogrammetric Surface Analysis of Ablation Processes in High-Enthalpy Air Plasma Flow
AIAA Journal ; 53 , 11 ; 3187-3195
2015-09-28
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Photogrammetric Surface Analysis of Ablation Processes in High-Enthalpy Air Plasma Flow
Online Contents | 2015
|Numerical Simulation of High Enthalpy Flow-High Enthalpy Flow Workshop
British Library Conference Proceedings | 1996
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