NDLI: A wide bandwidth electrostatic field sensor for lightning research

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A wide bandwidth electrostatic field sensor for lightning research

Content Provider	NASA Technical Reports Server (NTRS)
Author	Zaepfel, Klaus P.
Copyright Year	1989
Description	Data obtained from UHF radar observation of direct-lightning strikes to the NASA F-106B aircraft have indicated that most of the 690 strikes acquired during direct-strike lightning tests were triggered by the aircraft. As an aid in understanding the triggered lightning process, a wide bandwidth electric field measuring system was designed for the F-106B by implementing a clamped-detection signal processing concept originated at the Air Force Cambridge Research Lab in 1953. The detection scheme combines the signals from complementary stator pairs clamped to zero bolts at the exact moment when each stator pair is maximally shielded by the rotor, a process that restores the dc level lost by the charge amplifier. The system was implemented with four shutter-type field mills located at strategic points on the aircraft. The bandwidth of the system was determined in the laboratory to be from dc to over 100 Hz, whereas past designs had upper limits of 10 to 100 Hz. To obtain the undisturbed electric field vector and total aircraft charge, the airborne field mill system is calibrated by using techniques involving results from ground and flight calibrations of the F-106B, laboratory tests of a metallized model, and a finite difference time-domain electromagnetic computer code.
File Size	999049
Page Count	12
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19890010412
Archival Resource Key	ark:/13960/t8tb6126c
Language	English
Publisher Date	1989-01-01
Access Restriction	Open
Subject Keyword	Meteorology And Climatology Broadband Calibrating Lightning F-106 Aircraft Flight Hazards Electrostatics Signal Detection Atmospheric Electricity Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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