This report considers some acoustical observa tions resulting from a high-power electrical discharge. One of the main objectives in making acoustical tests was to obtain some kind of measure of the ratio of the radiated acoustical energy to that of the electrical energy of the discharge. For the tests made under sea water this ratio was observed to be on the order of 1 to 1000, while using a simple ...
Thunderstorm lightning to aircraft reports from over 700 incidents are tabulated and, although the data on jets is not yet complete, show the greatest incidence of strikes to occur near 0 C and around 10,000 ft altitudes with some lightning incidents at 40,000 ft. Point-of-strike frequencies are also tabulated. Applications of artificial lightning generators and model studies to determine point-of-strike probabilities and reproduce natural lightning in-flight effects are discussed. Specific ...
The results of an experimental study of the propagation characteristics of sea water for a highpower electromagnetic transient wave are presented. The methods of the transient wave generation and reception are described. The results consider the non-linear frequency characteristics of the medium as they relate to the attenuationAND DELAY OF THE PROPAGATED WAVE. The observed transient received signal characteristics as a function of both distance and depth are compared with ...
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