Lightning Criteria Relative to Space Shuttles: Currents and Electric Field Intensity in Florida LightningNational Aeronautics and Space Administration, 1972 - 39 sidor |
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Lightning Criteria Relative to Space Shuttles: Currents and Electric Field ... Martin A. Uman,D. Kenneth McLain Fragmentarisk förhandsgranskning - 1972 |
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63 strokes 98 close strokes Atlantic Ocean Berger and Vogelsanger Calculated electric field channel slanted computed the electric connecting discharge current rise current risetimes current wave shape current waveform currents whose wave decrease distances for typical distant waveforms electric field intensity electric field wave electric field waveforms electrostatic field Empire State Building error field at 100 field wave shapes Fisher and Uman Florida lightning half of peak initial peak kA/µsec Kennedy Space Center Lightning Return Stroke m/sec and various major branch measured electric field measured fields microseconds Mount San Salvatore msec multiple stroke flash NASA ordinate scales peak current peak value percent propagation return stroke model return stroke velocities return-stroke current Scale x 0.5 Schonland 1956 shown in Fig stroke current strokes at distances Strokes in 21 transmission line model typical currents Uman and McLain various distances vertical channel waveshape Westinghouse Research Laboratories zero to peak µsec