Löhle, Stefan and Stäbler, Tina and Reimer, Thomas and Cefalu, Alessandro (2014) Photogrammetric Surface Analysis of Ablation Processes in High Enthalpy Air Plasma Flow. In: 11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference. AIAA Aviation and Aeronautics Forum and Exposition 2014, 2014-06-14 - 2014-06-20, Atlanta, USA. doi: 10.2514/6.2014-2248.
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Abstract
Results from 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 air flow corresponding to a Hayabusa re-entry condition in 78km altitude. The applied photogrammetry uses two digital single lens reflex (DSLR) cameras triggered at 3 fps to acquire images simultaneously from two different perspectives of the sample exposed to the high Speed flow. The photogrammetric analysis resolves the surface with 25000 px/cm2, 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 21 micro�meters. The method is a useful tool for the investigation of temporally resolved volumetric ablation phenomena in low density carbon phenolic materials.
Item URL in elib: | https://elib.dlr.de/92476/ | ||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||
Title: | Photogrammetric Surface Analysis of Ablation Processes in High Enthalpy Air Plasma Flow | ||||||||||||||||||||
Authors: |
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Date: | June 2014 | ||||||||||||||||||||
Journal or Publication Title: | 11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference | ||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||
DOI: | 10.2514/6.2014-2248 | ||||||||||||||||||||
Status: | Accepted | ||||||||||||||||||||
Keywords: | Photogrammetrie, in-situ-Messung, Ablation, Plasmawindkanal | ||||||||||||||||||||
Event Title: | AIAA Aviation and Aeronautics Forum and Exposition 2014 | ||||||||||||||||||||
Event Location: | Atlanta, USA | ||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||
Event Start Date: | 14 June 2014 | ||||||||||||||||||||
Event End Date: | 20 June 2014 | ||||||||||||||||||||
Organizer: | AIAA | ||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||
HGF - Program Themes: | Space Transportation | ||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||
DLR - Program: | R RP - Space Transportation | ||||||||||||||||||||
DLR - Research theme (Project): | R - Raumfahrzeugsysteme - Rückkehrtechnologie (old) | ||||||||||||||||||||
Location: | Stuttgart | ||||||||||||||||||||
Institutes and Institutions: | Institute of Structures and Design > Space System Integration | ||||||||||||||||||||
Deposited By: | Reimer, Thomas | ||||||||||||||||||||
Deposited On: | 23 Dec 2014 17:12 | ||||||||||||||||||||
Last Modified: | 24 Apr 2024 19:58 |
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