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    Wyświetlanie 1-7 z 7
    Tytuł:
    X-ray and Visual Investigations on the Combustion Process of Curved, Low-gas, Pyrotechnic Paths Used in Self-destruction Assemblies of Missile Fusing Systems
    Autorzy:
    Miszczak, Maciej
    Warchoł, Radosław
    Nita, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/358330.pdf
    Data publikacji:
    2019
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    combustion
    military ammunition
    pyrotechnic curved paths
    optical recording
    Opis:
    The validation of the consistency of combustion front propagation along confined, low-gas, curved, pyrotechnic paths pressed into the grooves of the disc bodies of artillery and rocket ammunition fusing systems, is of critical importance as it concerns the functional reliability and safe usage of such types of ammunition. To validate the above consistency, Real Time X-ray Radioscopy (RTR) was utilized for the recording of the combustion process of curved pyrotechnic paths comprising two delay time segments. To confirm the observations obtained by the RTR technique, visual (VIS) recording was utilized for the unconfined pyrotechnic path. Due to the RTR and VIS techniques, evolution of the combustion process was recorded as a combustion front travelling along the pyrotechnic path. The combustion front had a convex shape. Using the VIS technique, a conical, bright tail was also observed behind the combustion front. The mean velocity of the propagation of the combustion front along each delay segment of the confined pyrotechnic path was determined on the basis of the RTR recordings. Using the RTR and VIS techniques, it was possible to quasi-continuously detect and record the combustion front movement along the confined and unconfined pyrotechnic paths, respectively. The VIS observations confirmed the RTR recording of the convex shape of the combustion front. In addition, the VIS technique allowed us to record the bright, conical tail.
    Źródło:
    Central European Journal of Energetic Materials; 2019, 16, 4; 596-606
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    X-ray Investigation of Dynamic Phenomena Occurring during Combustion of the Pyrotechnic Charges of 40 mm Grenade Fuze Delay Systems
    Autorzy:
    Miszczak, Maciej
    Warchoł, Radosław
    Nita, Marcin
    Kasprzak, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/358099.pdf
    Data publikacji:
    2019
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    military ammunition
    pyrotechnic end-burning charges
    combustion
    Real-Time X-ray Radioscopy
    Opis:
    Experimental Real Time X-ray Radioscopy (RTR) investigation of dynamic phenomena occurring during the combustion of end-burning pyrotechnic charges confined in the fuze body, utilized in the delay systems of 40 mm grenade fuzes, are presented. These pyrotechnic delay systems delay the arming distance pyromechanism and the self-destroying timing assembly. The charge in the delay arming distance pyromechanism was a black powder pellet supported by the safety pin kept in constant position by its driving compressed spring. The self-destroying timing assembly comprised three pyrotechnic segmented columns connected at their ends with ignition relay channels, creating a zig-zag firing train. The following dynamic phenomena were detected and registered by RTR at a frequency of 30 FPS: (i) combustion zone travelling along the pyrotechnic charges, (ii) displacements of the pyromechanism safety pin caused by either the pressure of its spring after burning out of the black powder pellet or by pressure of the combustion products escaping from the zig-zag firing train, (iii) transfer of the ignition impulse between the adjacent pyrotechnic columns, (iv) pressure action of the combustion products on the pyrotechnic columns during transfer of the ignition impulse, and (v) transfer of the final output ignition impulse from the last (third) pyrotechnic column through the channel leading directly to the chamber used for accommodating the fuze detonator.
    Źródło:
    Central European Journal of Energetic Materials; 2019, 16, 1; 77-90
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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