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Optical imaging techniques for hypersonicimpulse facilities

Published online by Cambridge University Press:  03 February 2016

T. J. McIntyre ,
H. Kleine  and
A. F. P. Houwing
T. J. McIntyre
Affiliation:
School of Physical Sciences, The University of Queensland, Brisbane, Australia
H. Kleine
Affiliation:
School of Aerospace, Civil & Mechanical Engineering, University of New South Wales, Australian Defence Force Academy, Canberra, Australia
A. F. P. Houwing
Affiliation:
Department of Physics and Theoretical Physics, Australian National University, Canberra, Australia
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Abstract

The application of optical imaging techniques tohypersonic facilities is discussed and examples ofexperimental measurements are provided. TraditionalSchlieren and shadowgraph techniques still remain asinexpensive and easy to use flow visualisationtechniques. With the advent of faster cameras, thesemethods are becoming increasingly important fortime-resolved high-speed imaging. Interferometry’squantitative nature is regularly used to obtaindensity information about hypersonic flows. Recentdevelopments have seen an extension of the types offlows that can be imaged and the measurement ofother flow parameters such as ionisation level.Planar laser induced fluorescence has been used tovisualise complex flows and to measure suchquantities as temperature and velocity. Futuredirections for optical imaging are discussed.

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Type
Research Article
Information
The Aeronautical Journal , Volume 111 , Issue 1115 , January 2007 , pp. 1 - 16
Copyright
Copyright © Royal Aeronautical Society 2007 

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