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Wyszukujesz frazę "no fire current" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Development and Study of High Energy Igniter/Booster Pyrotechnic Compositions for Impulse Cartridges
Autorzy:
Khan, A.
Malik, A. Q.
Lodhi, Z. H.
Powiązania:
https://bibliotekanauki.pl/articles/358209.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
calorific value
max no fire current
stray voltage
static discharge
peak pressure
Opis:
In order to suitably initiate an impulse cartridge and to get the desired peak pressure, high energy igniter and booster pyrotechnic compositions may be required. Studies were undertaken to develop different types of high energy igniter and booster pyrotechnic compositions comprising B/KNO3, Zr/KClO4 and Pb(SCN)2/KClO3 as igniter compositions, and B/Mg/KClO4/Bi2O3 and B/Mg/KClO4 as booster compositions. Different ratios of fuels and oxidizers were studied in order to determine the best igniter and booster compositions. The measurement of the calorific values for the igniter and the booster compositions, along with safety tests of the igniter compositions, were performed. The pattern of calorific values observed for the igniter and booster compositions under study were B/KNO3 > Zr/KClO4 > Pb(SCN)2/KClO3 and B/Mg/KClO4 > B/Mg/KClO4/Bi2O3, respectively. The newly-developed high energy igniter compositions passed all of the safety tests. Both igniter and booster compositions were also subjected to functional tests in an impulse cartridge. The functional tests were intended for the determination of peak pressure and time to peak pressure. These high energy igniter and booster compositions increased the peak pressure by 8.3% and reduced the time to peak pressure by 14.3% for an impulse cartridge in a closed chamber of volume 230 cm3. The consequence of this research work is that the best combination of igniter and booster compositions in terms of safety, calorific values and cartridge functionality are Zr/KClO4 (40/60) and B/Mg/KClO4 (30/10/60), respectively.
Źródło:
Central European Journal of Energetic Materials; 2017, 14, 4; 933-951
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lumped Parameter Analysis of Bridge Wire in an Electro Explosive Device of a Power Cartridge for Water-Jet Application: A Case Study
Autorzy:
Parate, Bhupesh Ambadas
Chandel, Sunil
Shekhar, Himanshu
Powiązania:
https://bibliotekanauki.pl/articles/1063002.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
all fire current
bridge wire
electro-explosive devices
igniter
lumped parameter
no fire current
power cartridge
water-jet disruptor
Opis:
In an armament system an electro-explosive device (EED) essentially converts electrical energy into heat which further initiates the explosive train with its accompanying temperature rise. The first function of an EED in a power cartridge is to provide adequate electrical current to cause ignition of the highly sensitive explosive i.e. lead styphnate. The electrical current accomplishes ignition by heating the bulb of lead styphnate which produces enough heat to cause the booster to ignite. The booster which is in the immediate vicinity augments the ignition of the propellant further. The igniter must be held firmly in place with the booster in the tube. Understanding of the initiation of explosives using a bridge wire in EEDs is important for engineers, designers and scientists to develop new theories. In this research article, theoretical and experimental work has been reported pertaining to bridge wire devices in power cartridges for water-jet applications. The objective of the present research work is to use lumped parameter analysis of a bridge wire in an electro explosive device of a power cartridge for water-jet application. A lumped parameter theory is proposed for the analysis of EEDs. A time constant of 3.35 s has been determined using the lumped parameters. The Biot number is less than 0.1 indicating that transient phenomenon is applied.
Źródło:
Central European Journal of Energetic Materials; 2020, 17, 3; 408-427
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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