Amplifier design for new CNT radiation gauges in expansion tunnels

Porat, H., Allsop, B. V., Morgan, R. G., Srinath, S., Reddy, K. P. J. and McIntyre, T. J. (2014). Amplifier design for new CNT radiation gauges in expansion tunnels. In: Harun Chowdhury and Firoz Alam, Proceedings of the 19th Australasian Fluid Mechanics Conference. 19th Australasian Fluid Mechanics Conference, Melbourne, VIC, Australia, (24.1-24.4). 8-11 December 2014.

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Name Description MIMEType Size Downloads
Author Porat, H.
Allsop, B. V.
Morgan, R. G.
Srinath, S.
Reddy, K. P. J.
McIntyre, T. J.
Title of paper Amplifier design for new CNT radiation gauges in expansion tunnels
Conference name 19th Australasian Fluid Mechanics Conference
Conference location Melbourne, VIC, Australia
Conference dates 8-11 December 2014
Proceedings title Proceedings of the 19th Australasian Fluid Mechanics Conference
Place of Publication Melbourne, VIC, Australia
Publisher RMIT University
Publication Year 2014
Sub-type Fully published paper
Open Access Status
ISBN 9780646596952
Editor Harun Chowdhury
Firoz Alam
Start page 24.1
End page 24.4
Total pages 4
Collection year 2015
Language eng
Formatted Abstract/Summary
A new fast response amplifier was designed for a high resistance - low gain operation driving new Carbon Nano Tube thin film radiation gauges ’CNT-RAD’ in hypersonic expansion tunnel experiments. The amplifier response time was measured to be of the order of 1µs, suitable for hypersonic flow experiments with test time of 100µs. The amplifier system was designed with 6 channel capability, a constant voltage offset, and a constant gauge current. It was used successfully, powering and amplifying the signal from CNT-RAD gauges with average resistance of 7kΩ and measuring radiative heat flux for a Titan 6.5km/s condition in the X2 expansion tunnel.

Sample results presented from the experimental campaign show raw voltage traces of radiative heat flux measurements made with the new CNT-RAD gauge and a radiation gauge with a nickel sensing element TFHG-RAD. Good signal to noise ratio levels were recorded with both gauges, with stable test time.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Paper 24

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Created: Fri, 30 Jan 2015, 16:07:42 EST by Katie Gollschewski on behalf of School of Mechanical and Mining Engineering