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Measurements of some parameters of thermal sparks with respect to their ability to ignite aviation fuel/air mixturesA method used to generate thermal sparks for experimental purposes and methods by which parameters of the sparks, such as speed, size, and temperature, were measured are described. Values are given of the range of such parameters within these spark showers. Titanium sparks were used almost exclusively, since it is particles of this metal which are found to be ejected during simulation tests to carbon fiber composite (CFC) joints. Tests were then carried out in which titanium sparks and spark showers were injected into JP4/(AVTAG F40) mixtures with air. Single large sparks and dense showers of small sparks were found to be capable of causing ignition. Tests were then repeated using ethylene/air mixtures, which were found to be more easily ignited by thermal sparks than the JP4/ air mixtures.
Document ID
19910023391
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Haigh, S. J. (United Kingdom Atomic Energy Authority Culham, United Kingdom)
Hardwick, C. J. (United Kingdom Atomic Energy Authority Culham, United Kingdom)
Baldwin, R. E. (United Kingdom Atomic Energy Authority Culham, United Kingdom)
Date Acquired
September 6, 2013
Publication Date
August 1, 1991
Publication Information
Publication: NASA. Kennedy Space Center, The 1991 International Aerospace and Ground Conference on Lightning and Static Electricity, Volume 2
Subject Category
Meteorology And Climatology
Accession Number
91N32705
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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