Application of photogrammetry at USQ hypersonic wind tunnel

Chong, Albert K. and Buttsworth, David and Mudford, Neil and Jokic, Michael and Balage, Sudantha and O'Bryne, Sean (2012) Application of photogrammetry at USQ hypersonic wind tunnel. In: 11th Australian Space Science Conference (ASSC 2011) , 26-29 Sept 2011, Canberra, Australia.

Abstract

This paper discusses an investigation into the use of photogrammetric techniques at the University of Southern Queensland's Ludwieg tunnel facility. The aim was to show that photogrammetric techniques and compact cameras could be used to achieve sub-millimetre precision in hypersonic speed tracking. The paper provides details on the setup of the imaging cameras, video capture, photogrammetric computation and the results of two aerodynamic experiments. A free-flying projectile constructed from a hollow metal cylinder with a round-nose and flat-tail was tracked using two low-cost Casio high-speed cameras. A set of retro-photogrammetric targets of known coordinates was used for camera relative orientation purposes. Corresponding frames were extracted from the video clips using VirtualDub software and a photogrammetric adjustment was applied to these frames to extract a set of 3D
coordinates of the tracked targets. The results showed that the photogrammetric technique gave a 3D object-space measurement accuracy of 0.064 mm when the projectile was in a static position and a precision of 0.11 mm during its flight in a pressurized airflow.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright © 2012 National Space Society of Australia Ltd.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Surveying and Land Information
Date Deposited: 20 Jun 2013 01:10
Last Modified: 14 Aug 2017 00:31
Uncontrolled Keywords: low-cost high-speed camera; free-flying projectile; 3D data capture; hypersonic
Fields of Research : 09 Engineering > 0909 Geomatic Engineering > 090905 Photogrammetry and Remote Sensing
08 Information and Computing Sciences > 0801 Artificial Intelligence and Image Processing > 080106 Image Processing
09 Engineering > 0901 Aerospace Engineering > 090107 Hypersonic Propulsion and Hypersonic Aerodynamics
Socio-Economic Objective: A Defence > 81 Defence > 8101 Defence > 810104 Emerging Defence Technologies
URI: http://eprints.usq.edu.au/id/eprint/21602

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