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Experimental Investigation of Photogrammetric Surface Analysis of Heat Shield Materials during Plasma Wind Tunnel Testing

Löhle, Stefan and Reimer, Thomas (2013) Experimental Investigation of Photogrammetric Surface Analysis of Heat Shield Materials during Plasma Wind Tunnel Testing. In: 7th European Workshop on Thermal Protection Systems and Hot Structures. 7th European Workshop on Thermal Protection Systems and Hot Structures, 8.-10. April 2013, Noordwijk, Niderlande.

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Abstract

The paper presents first results of an experimental analysis of surface recession using advanced photogrammetric tools. Based on image pairs acquired with two DSLR cameras, classical photogrammetry has been tried, but pixelwise image analysis with corresponding matching algorithms show much better results ans higher stability to image noise and ra- diation and re ection issues. A combination of open source tools for the analysis of camera positions and focal points, pixel matching analysis, and pixel cloud comparing, allows the recession to be measured with very high local resolution of 20 �m of a 2D surface. The ap- proach is analysed within this study with respect to window disturbance and experimental setup constraints. A first plasma wind tunnel experiment shows the applicability and an analysis of a central spot is comparable to laser recession measurements.

Item URL in elib:https://elib.dlr.de/87097/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental Investigation of Photogrammetric Surface Analysis of Heat Shield Materials during Plasma Wind Tunnel Testing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Löhle, StefanInstitut für Raumfahrtsysteme, Universität StuttgartUNSPECIFIED
Reimer, Thomasthomas.reimer (at) dlr.deUNSPECIFIED
Date:8 April 2013
Journal or Publication Title:7th European Workshop on Thermal Protection Systems and Hot Structures
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:surface, recession photogrammetry image analysis, plasma wind tunnel testing, heat shield materials.
Event Title:7th European Workshop on Thermal Protection Systems and Hot Structures
Event Location:Noordwijk, Niderlande
Event Type:Workshop
Event Dates:8.-10. April 2013
Organizer:ESA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Space Structural Components
Deposited By: Reimer, Thomas
Deposited On:14 Jan 2014 15:24
Last Modified:31 Jul 2019 19:44

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