Hypersonic wind-tunnel free-flying experiments with onboard instrumentation

Mudford, Neil R. and O'Byrne, Sean and Neely, Andrew and Buttsworth, David and Balage, Sudantha (2015) Hypersonic wind-tunnel free-flying experiments with onboard instrumentation. Journal of Spacecraft and Rockets, 52 (1). pp. 231-242. ISSN 0022-4650

Abstract

Hypersonic wind-tunnel testing with 'free-flight' models unconnected to a sting ensures that sting/wake flow interactions do not compromise aerodynamic coefficient measurements. The development of miniaturized electronics has allowed the demonstration of a variant of a new method for the acquisition of hypersonic model motion data using onboard accelerometers, gyroscopes, and a microcontroller. This method is demonstrated in a Mach 6 wind-tunnel flow, whose duration and pitot pressure are sufficient for the model to move a body length or more and turn through a significant angle. The results are compared with those obtained from video analysis of the model motion, the existing method favored for obtaining aerodynamic coefficients in similar hypersonic wind-tunnel facilities. The results from the two methods are in good agreement. The new method shows considerable promise for reliable measurement of aerodynamic coefficients, particularly because the data obtained are in more directly applicable forms of accelerations and rates of turn, rather than the model position and attitude obtained from the earlier visualization method. The ideal may be to have both methods operating together.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2014 by the American Institute of Aeronautics and Astronautics, Inc. Permanent restricted access to published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 18 Feb 2015 23:15
Last Modified: 08 Mar 2017 05:47
Uncontrolled Keywords: instrumentation; aerodynamics; data visualization; free flight; motion analysis; hHypersonic wind tunnels
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020102 Astronomical and Space Instrumentation
09 Engineering > 0906 Electrical and Electronic Engineering > 090604 Microelectronics and Integrated Circuits
09 Engineering > 0901 Aerospace Engineering > 090107 Hypersonic Propulsion and Hypersonic Aerodynamics
Socio-Economic Objective: B Economic Development > 88 Transport > 8803 Aerospace Transport > 880399 Aerospace Transport not elsewhere classified
Identification Number or DOI: 10.2514/1.A32887
URI: http://eprints.usq.edu.au/id/eprint/26632

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