The Application of Electrothermal-Chemical (ETC) Propulsion Concepts to Reduce Propelling Charge Temperature Sensitivity

Oberle, William F.; White, Kevin J.

doi:10.21236/ada330944

Cited by 11 publications

(11 citation statements)

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“…This is consistent with the assumption that, in the traditional Vieille's law, r P = b·P n , the pressure exponent, n, is not a function of the initial temperature [2]. This corresponds to the assumption that the slope of the ln (r) vs. ln (P), resulting from different initial temperatures of the propellant, remains constant.…”

Section: Temperature Sensitivitysupporting

confidence: 82%

“…It is important to note that the change of one or more of these parameters could influence the temperature coefficients [2].…”

Section: Discussionmentioning

confidence: 99%

“…To define the temperature sensitivity of the burning rate, it is often assumed that, in the traditional Vieille's law, r P = b·P n , the pressure exponent, n, is not a function of the initial temperature [2]. The temperature sensitivity σ (r P ) of the burn rate (r) at a pressure P is thus defined as the relative change in burning rate from the value at 21 °C (benchmark temperature) resulting from a change in the initial temperature dT 0 [2].…”

Section: Temperature Sensitivitymentioning

confidence: 99%

“…The temperature sensitivity σ (r P ) of the burn rate (r) at a pressure P is thus defined as the relative change in burning rate from the value at 21 °C (benchmark temperature) resulting from a change in the initial temperature dT 0 [2]. The benchmark value of the propellant parameter is set to the value at 21 °C (Equation 1).…”

Section: Temperature Sensitivitymentioning

confidence: 99%

“…The temperature coefficients of a gun are often defined as the relative change (expressed in percentage) of the investigated output ballistic parameters (maximum chamber pressure inside the weapon or projectile velocity) from its benchmark values for a given change of the initial temperature dT 0 [2,3]. The benchmark values of the ballistic parameters are the ones determined at 21 °C (Equation 2).…”

Section: Temperature Coefficientsmentioning

confidence: 99%

See 4 more Smart Citations

Temperature Sensitivity of Propellant Combustion and Temperature Coefficients of Gun Performance

Boulkadid

Lefebvre

Jeunieau

et al. 2016

Cent. Eur. J. Energ. Mater.

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Abstract:One of the objectives of gun propellant research is to develop green formulations of gunpowder that should be less temperature sensitive than the current gun propellant. The temperature sensitivity of these new green formulations of the propellant should be measured to identify the less temperature sensitive green formulations. However, there are deficiencies in the methodologies for the measurement of the temperature sensitivity of gun propellants. Therefore, the aim of this investigation was to fill the gap by establishing a method for the measurement of the temperature sensitivity of deterred gun propellants by closed vessel tests. The temperature sensitivity of the burning rate of ball propellants and the temperature coefficients of gun performance were determined using closed vessel tests and ballistic firing, respectively. Specific definitions of temperature sensitivity and temperature coefficients were evaluated. The relation between these parameters has never been explicitly investigated previously. Assessing the temperature sensitivity of propellants by closed vessel tests is of added value to the range of ballistic tests if the results of these tests can be well correlated to the results of ballistic firings. Therefore, a comparison between both parameters was made. A correspondence has been observed between the temperature sensitivity of the propellant burning rate, as obtained from closed vessel tests, and the temperature coefficients as obtained from ballistic firings.

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Section: Temperature Sensitivitysupporting

confidence: 82%

“…It is important to note that the change of one or more of these parameters could influence the temperature coefficients [2].…”

Section: Discussionmentioning

confidence: 99%