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A comparison of lightning and nuclear electromagnetic pulse response of tactical sheltersThe internal response (electromagnetic fields and cable responses) of tactical shelters is addressed. Tactical shelters are usually well-shielded systems. Apart from penetrations by signal and power lines, the main leakage paths to the interior are via seams and the environment control unit (ECU) honeycomb filter. The time domain in three-dimensional finite-difference technique is employed to determine the external and internal coupling to a shelter excited by nuclear electromagnetic pulses (NEMP) and attached lightning. The responses of interest are the internal electromagnetic fields and the voltage, current, power, and energy coupled to internal cables. Leakage through the seams and ECU filter is accomplished by their transfer impedances which relate internal electric fields to external current densities. Transfer impedances which were experimentally measured are used in the analysis. The internal numerical results are favorably compared to actual shelter test data under simulated NEMP illumination.
Document ID
Document Type
Conference Paper
Perala, R. A. (Electro Magnetic Applications, Inc. Denver, CO, United States)
Rudolph, T. H. (Electro Magnetic Applications, Inc. Denver, CO, United States)
Mckenna, P. M. (Electro Magnetic Applications, Inc. Denver, CO, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1984
Publication Information
Publication: NASA. Langley Research Center Intern. Aerospace and Ground Conf. on Lightning and Static Elec.
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19850008034Analytic PrimaryInternational Aerospace and Ground Conference on Lightning and Static Electricity. 1984 Technical Papers (Supplement)
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