Accession Number : AD0633085

Title :   ORDNANCE CORPS VIEWS ELECTROMAGNETIC RADIATION HAZARDS TO WEAPONS SYSTEMS,

Corporate Author : FELTMAN RESEARCH LABS PICATINNY ARSENAL DOVER N J

Personal Author(s) : Seeger,Donald E.

Report Date : APR 1960

Pagination or Media Count : 7

Abstract : There are at least seven factors involved in determining whether the electric initiator in the ordnance item will be activated by electromagnetic radiation. They are as follows: frequency or frequencies of radiation, form of radiation, i.e., pulsed, continuous wave, amplitude modulated, frequency modulated, power density of radiation at the receiving antenna, effective receiving antenna, i.e., tuned, untuned, presence of directors or reflectors, impedance presented to electromagnetic energy by the transducing element of the electric initiator, impedance match between receiving antenna and transducing element; characteristic sensitivity of the transducer-explosive assembly to electromagnetic energy. The problem of the hazards of electromagnetic radiation to ordnance is complicated by the interaction of the seven factors as well as the uncertainty of the environmental conditions. Based on the results of work conducted in this field, the electromagnetic radiation problem appears to be entirely solvable through the use of shielding, broadband attenuators, insensitive initiators and good basic engineering design of circuitry.

Descriptors :   (*EXPLOSIVES INITIATORS, *ELECTROMAGNETIC RADIATION), HAZARDS, ELECTROMAGNETIC SHIELDING, RADIOFREQUENCY POWER, ANTENNAS, ATTENUATORS, IMPEDANCE MATCHING, SENSITIVITY, WEAPON SYSTEMS, MODULATION, CIRCUITS, BROADBAND

Subject Categories : Electrical and Electronic Equipment
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE