Through surface and across surface vacuum ultraviolet spectral measurements in an expansion tube

Sheikh, Umar A., Morgan, Richard G., McIntyre, Timothy J. and Laux, Christophe O. (2013). Through surface and across surface vacuum ultraviolet spectral measurements in an expansion tube. In: 44th AIAA Thermophysics Conference 2013: Proceedings. 44th AIAA Thermophysics Conference, San Diego, United States, (333-344). 24-27 June 2013. doi:10.2514/6.2013-2644

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Author Sheikh, Umar A.
Morgan, Richard G.
McIntyre, Timothy J.
Laux, Christophe O.
Title of paper Through surface and across surface vacuum ultraviolet spectral measurements in an expansion tube
Conference name 44th AIAA Thermophysics Conference
Conference location San Diego, United States
Conference dates 24-27 June 2013
Proceedings title 44th AIAA Thermophysics Conference 2013: Proceedings
Journal name 44th AIAA Thermophysics Conference
Place of Publication Red Hook, NY, USA
Publisher Curran Associates
Publication Year 2013
Sub-type Fully published paper
DOI 10.2514/6.2013-2644
Open Access Status
ISBN 9781627488952
Volume 1
Start page 333
End page 344
Total pages 12
Collection year 2014
Language eng
Formatted Abstract/Summary
The importance of vacuum ultraviolet (VUV) aerothermodynamic heating during reentry is presented and the uncertainties involved in this region of the spectrum and their consequent result on heat shield design is discussed. A method developed at The Centre for Hypersonics capable of VUV emission spectra measurements from across and through the surface of a blunt model is outlined. An in situ calibration is applied to the data measured using this system to achieve fully calibrated spectral data at two superorbital conditions representing high-speed points on a re-entry trajectory. To date, this is the first study to present calibrated through surface VUV spectral data at high speed superorbital trajectory points. In comparing through surface and across surface data, it is possible to calculate a correlation between the VUV radiation observed across a shock layer, as measured in shock tunnels, and the radiation incident on the surface. This correlation will enable shock tunnel data to be more accurately applied in the design of spacecraft heat shields and provide insight into VUV radiation heat transfer through boundary layers.
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Thu, 07 Nov 2013, 13:05:59 EST by Katie Gollschewski on behalf of School of Mechanical and Mining Engineering