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Constant temperature hot-wire measurements in a short duration supersonic wind tunnel

Published online by Cambridge University Press:  04 July 2016

J. Weiss ,
H. Knauss ,
S. Wagner  and
A. D. Kosinov
J. Weiss
Affiliation:
Institut für Aerodynamik und Gasdynamik (IAG) Universität Stuttgart, Germany
H. Knauss
Affiliation:
Institut für Aerodynamik und Gasdynamik (IAG) Universität Stuttgart, Germany
S. Wagner
Affiliation:
Institut für Aerodynamik und Gasdynamik (IAG) Universität Stuttgart, Germany
A. D. Kosinov
Affiliation:
Institute for Theoretical and Applied Mechanics (ITAM) Novosibirsk, Russia
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Abstract

A constant temperature hot-wire anemometer enabling automatic rapid scanning of the wire overheat was built to perform free stream disturbance measurements in the shock wind tunnel of the Institute for Aerodynamics and Gasdynamics at Stuttgart University. It is shown that such a system brings real advantages in terms of testing time. The change of bridge dynamic behaviour with wire temperature is taken into account by measuring the bridge frequency response with a very fast electrical test and postprocessing the data. The method of operation is validated in a supersonic suck down wind tunnel and a comparison with a commercial constant temperature bridge shows good agreement. Results of free stream disturbance measurements in a short duration supersonic wind tunnel of 120ms testing time are presented.

Type
Research Article
Information
The Aeronautical Journal , Volume 105 , Issue 1050 , August 2001 , pp. 435 - 450
Copyright
Copyright © Royal Aeronautical Society 2001 

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