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Shock Waves pp 801-806 | Cite as

Influence of diaphragm properties on shock wave transmission

  • S. B. Murray
  • F. Zhang
  • K. B. Gerrard
  • P. Guillo
  • R. C. Ripley
Conference paper

Abstract

One detonation initiation method currently being investigated for possible use in pulse detonation engines is the ‘pre-detonator’ or ‘driver tube’ concept. In this concept, a tube filled with sensitive fuel-oxygen mixture is spark ignited and the resulting detonation wave is used to transmit a strong shock wave to a larger tube containing relatively insensitive fuel-air mixture. The high initial shock strength, together with strong reflections from the chamber walls, is effective at promoting shock initiation of fuel-air detonation. A fundamental study to understand and to optimize the performance of the pre-detonator is currently underway at DRDC Suffield [1,2]. The apparatus consists of a driver tube connected to a co-axially aligned combustion chamber of 21.6 cm diameter. Driver tubes of 4.93, 7.37 and 9.72 cm diameter are available. The driver gas is typically a stoichiometric acetylene-oxygen mixture, while the combustion chamber is filled with an acetylene-air mixture. The sensitivity of the acetylene-air is adjusted by varying its stoichiometry. In these fundamental tests, a thin plastic diaphragm is used to separate the two gases.

Keywords

Shock Tube Incident Shock Diaphragm Mass Drive Section Transmitted Shock 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    S.B. Murray, F. Zhang, K.B. Gerrard: ‘The Influence of Driver Power and Receptor Confinement on Pre-detonators for Pulse Detonation Engines’. In: Proc. 18th ICDERS, Seattle, Washington, 29 July–3 August, 2001 Google Scholar
  2. 2.
    S.B. Murray, F. Zhang, K.B. Gerrard: ‘Critical Parameters for Pulse Detonation Engine Pre-detonator Tubes’. In: Proc. of 19th ICDERS, Hakone, Japan, 27 July–1 August, 2003 Google Scholar
  3. 3.
    I.O. Moen, J.W. Funk, S.A. Ward, G. Rude, P.A. Thibault: ‘Detonation Length Scales for Fuel-Air Explosions’. In: Progress in Astronautics and Aeronautics, 94, 55–79 (1985)Google Scholar
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    F. Zhang, P.A. Thibault: SuperSTATE Users’ Manual. (Martec Ltd., Halifax, NS, Canada 2002)Google Scholar
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    L. Martin, J. Penrose, P.A. Thibault, K. Moen: IFSAS-II Users’ Manual (Martec Ltd., Halifax, NS, Canada 2002)Google Scholar

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • S. B. Murray
    • 1
  • F. Zhang
    • 1
  • K. B. Gerrard
    • 1
  • P. Guillo
    • 2
  • R. C. Ripley
    • 3
  1. 1.DRDC SuffieldMedicine HatCanada
  2. 2.Université d’OrléansOrleans Cedex 2France
  3. 3.Martec Ltd.HalifaxCanada

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