Comparative Examinations of Electric Primers Action as a Function of Initiating Pulse Power
Journal Title: PROBLEMY TECHNIKI UZBROJENIA - Year 2018, Vol 148, Issue 4
Abstract
Initiation of electric primers by pulses of constant energy at 3 different levels of pow-er from P ~1 W to P ~1 MW was investigated. Actions of primers with metallic electric bridge (SI) connected to an exploder and initiated by permanent disposable energy of ca. 20 mJ were compared to primers with the resistance distributed within a pyrotechnic mixture (SII) initiated by permanent disposable energy of ca. 200 mJ. A series of current “sub-pulses” at one activation of SII is shown. Average delay of activation was reduced from 8.7 ms at P ~1 W to 133 mikro s at P ~1 MW for SI, and from ca. 90 mikro s at P ~1 kW to ca. 50 mikro s at P ~1 MW for SII, to be in practice unchangeable above P ~1 kW for two types of primers. Mechanisms of initiation and factors influencing the measured delays were discussed. Average energies absorbed to the moment of activation were determined: 5 – 7 mJ for SI, and ca.15 mJ for SII. Final pressures inside the casing of primers/ igniters were estimated on the level of 300 – 400 bar.<br/><br/>
Authors and Affiliations
Andrzej Faryński, Romuald Kaźmierczak, Tomasz Kwaśniak, Edward Olejniczak, Ryszard Urbaniak, Zbigniew Ziółkowski
Keywords
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- EP ID EP559746
- DOI 10.5604/01.3001.0013.1676
- Views 23
- Downloads 0
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