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A Proposed Vertical Expansion Tunnel

Parziale, N. J. and Rabinovitch, J. and Blanquart, G. and Hornung, H. G. and Shepherd, J. E. (2012) A Proposed Vertical Expansion Tunnel. In: 42nd AIAA Fluid Dynamics Conference and Exhibit. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2012-3263. ISBN 9781600869334.

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Issues resulting from the rupture of the secondary diaphragm in an expansion tunnel may be mitigated by matching the test gas pressure and the accelerator gas pressure, orienting the tunnel vertically, and initially separating the test gas from the accelerator gas by density stratification. Two benefits are: 1) the removal of the diaphragm particulates in the test gas after its rupture and 2) the elimination of the wave system that is a result of a real secondary diaphragm having a finite thickness and mass. An inviscid perfect-gas analysis is performed to find the reservoir conditions available in the vertical expansion tunnel (VET) for comparison to a conventional expansion tunnel (ET) and a reflected shock tunnel (RST). A numerical inviscid perfect-gas analysis is presented to estimate the available test time in the VET. The effective reservoir conditions of the VET lie somewhere between the RST and the ET.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Parziale, N. J.0000-0001-9880-1727
Rabinovitch, J.0000-0002-1914-7964
Blanquart, G.0000-0002-5074-9728
Hornung, H. G.0000-0002-4903-8419
Shepherd, J. E.0000-0003-3181-9310
Additional Information:© 2012 American Institute of Aeronautics and Astronautics. This work was sponsored in part by AFOSR/National Center for Hypersonic Research in Laminar Turbulent Transition, for which Dr. John Schmisseur and Dr. Deepak Bose are the program managers. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the Air Force Office of Scientific Research or the U.S. Government. The authors would also like to thank Siddhartha Verma for his contribution to the work.
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Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
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AIAA Paper2012-3263
Record Number:CaltechAUTHORS:20190826-092412604
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Official Citation:A Proposed Vertical Expansion Tunnel Nicholaus Parziale, Jason Rabinovitch, Guillaume Blanquart, Hans Hornung, and J. Shepherd 42nd AIAA Fluid Dynamics Conference and Exhibit.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98219
Deposited By: George Porter
Deposited On:26 Aug 2019 17:53
Last Modified:03 Oct 2019 21:39

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