Study of Plasma Jet Capabilities to Produce Uniform Ignition of Propellants, Ballistic Gain, and Significant Decrease of the “Temperature Gradient”

Zoler, D.; Shafir, N.; Forte, D.; Kot, E.; Ravid, Avi; Wald, S.; Sudai, M.

doi:10.1109/tmag.2006.887664

Cited by 7 publications

(1 citation statement)

References 7 publications

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“…In the past decades, a variety of technical approaches and regulatory mechanisms have been developed to obtain a low temperature sensitivity coefficient. Electrothermal chemical launcher technology [8,9] reduces the influence of temperature on the linear burning rate of propellants by adjusting the input electric energy [10,11]. Another regulatory mechanism is to compensate the decreasing burning rate by increasing burning surface of the propellant, such as prefabrication of microcracks [12][13][14], SCDB (surface coated double base) [15,16], ECL (extruded composite low sensitivity) [17,18] and EI (extruded impregnated) technologies [19,20].…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensitivity Coefficients of RDX‐Based Propellants and Their Mixed Charges

You

Zhu

Liu

et al. 2021

Propellants Explo Pyrotec

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Low temperature sensitivity coefficients of gun propellants are of great significance for improving the stability of weapon performances. In this work, RDX-NC-NG-DEGDN propellants (R-MNEGP) were prepared to reduce the temperature sensitivity coefficient of mixed charges. The temperature sensitivity coefficients of R-MNEGP, NC-NG-DEGDN propellants (MNEGP) and their mixed charges were studied by closed vessel tests, scanning electron microscope (SEM), and ballistic firing experiments. The results show that the increased burning surface of R-MNEGP compensates the decrease in the burning rate of the propellant when the initial temperature is decreased compared with MNEGP. The temperature sensitivity coefficient of R-MNEGP is lower than that of MNEGP, and the temperature sensitivity coefficients of the mixed charges (R-MNEGP and MNEGP) are between these two temperature sensitivity coefficients in the range of À 40°C-20°C and 20°C-50°C. Compared with MNEGP, the velocity temperature sensitivity coefficients of the mixed charges with 6 wt % and 10 wt % R-MNEGP decreased by 34.86 % and 70.67 %, and the pressure temperature sensitivity coefficients of these decreased by 42.99 % and 100.90 % with increasing temperature from À 40°C to 15°C. And the velocity temperature sensitivity coefficients had no significant change, and the pressure temperature sensitivity coefficients decreased by 2.58 % and 77.98 % in the range of 15°C-50°C. This study offers an attractive strategy for tuning the temperature sensitivity coefficient by mixing charges of R-MNEGP and MNEGP with different temperature sensitivity coefficients.

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