The combustion of pyrotechnic delay composition based on metallic fuel and perchlorate oxidizer involves complex reaction mechanisms and condensed phase heat release. Studies on the effect of aging on ignition/burning properties, and understanding of such multicomponent pyrotechnic delay mixtures are quite limited. The present work focuses on investigating the reaction kinetics, ignition, and combustion behavior of a zirconium/nickel (Zr/Ni)-alloy-based pyrotechnic delay mixture. Comparisons are presented between pristine and hygrothermally aged samples subjected to accelerated aging conditions under a constant temperature of 71°C and 95% relative humidity for 2 weeks. Activation energy versus reaction progress, ignition delay time as a function of maximum wire temperature, reaction zone temperature profile, and burning rate with respect to pressure are obtained from various experimental procedures. Results indicate that aging increases the ignition delay time and temperature rise time significantly, and a substantial decrement in the heat of reaction and burning rates along with incomplete combustion are evident.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Burning Characteristics of Pyrotechnic Time-Delay Composition Subjected to Moisture and Heat


    Contributors:

    Published in:

    Publication date :

    2021-11-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    SBASI - actuated pyrotechnic time delay initiator

    Salter, S. J. / Lundberg, R. E. / McDougal, G. L. | TIBKAT | 1975


    PYROTECHNIC COMPOSITION

    BARR GRAHAM MORRIS | European Patent Office | 2016

    Free access

    Pyrotechnic composition

    GRAHAM MORRIS BARR | European Patent Office | 2020

    Free access

    Preheating slow-burning pyrotechnic compositions to aid ignition andcombustion

    RAO, V. K. / BARDON, M. F. / TWARDAWA, P. | AIAA | 1987