Accession Number:

AD0669299

Title:

CURRENT PAUSE DURING ELECTRIC EXPLOSION OF LITTLE WIRES IN THE AIR (TOKOVAYA PAUZA PRI ELEKTRICHESKOM VZRYVE PROVOLOCHEK V VOZDUKHE),

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date:

1967-10-31

Pagination or Media Count:

9.0

Abstract:

A study of the nature of the interruption of current during the electrical explosion of fine wires in air is described. The interruption of current is the time interval between the end of the first and the beginning of the second current pulse flowing through the fine wire. An RLC circuit R 0.02 omega L 0.4 mu h C 300 mu h consisting of two IM-5-15 capacitors connected in parallel was used to send current through the fine wire. The capacitor was charged to 3.1 kv at the beginning of each test. An oscillograph was connected to the movable arm of a potentiometer connected across the wire sample. Samples of W, Mo, Ta, and Fe wires with lengths ranging from 5 to 150 mm and diameters from 0.05 to 0.30 mm were used in the tests. Test results for 50-mm long W, Mo, Ta, and Fe wires with diameters of 0.30, 0.14, and 0.24 mm are shown in Fig. 1. The duration of the interruption of current for wires made from above metals is more stable than that for copper wires. The interruption duration is a function of the wire length and diameter it increases sharply with wire length. At high initial voltages across the capacitor current pauses are very short and it is difficult to establish their dependence on the wire diameter. Current interruption duration decreases with increasing initial voltage across the capacitor. Orig. art. has 3 figures and 1 table. Author

Subject Categories:

  • Metallurgy and Metallography
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE