Abstract
Combustion wave temperature profiles are determined for two low calorific value propellants (Q c = 2189 and 2518 kJ/kg). It is shown that the structure and parameters of the combustion wave differ significantly from those for previously studied propellants of medium (propellant N) and high (propellant NB) calorific values. At a relatively short distance from the burning surface, the temperature is significantly (180–270 K) higher than the calculated value due to fact the combustion products contain carbon black from the decomposition of heat-resistant dibutyl dinitrotoluene and dibutyl phthalate. Then, part of carbon black reacts endothermically with CO2 and H2O, leading to a decrease in temperature, which for the first sample is nevertheless 100–140 K higher than the thermodynamic value. For the investigated propellants, the activation energy of the leading reaction is the same as for the previously studied propellants, suggesting a common decomposition kinetics of the condensed phase regardless of the propellant composition. However, a uniform dependence of the burning rate on surface temperature is not observed. For low calorific value propellants, the surface temperatures are close to those for propellant N although their burning rate is significantly (2–2.2 times) lower. The causes of this fact are considered.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. A. Zenin, “Processes in the combustion zones of ballistite propellants,” in: Physical Processes in Combustion and Explosion [in Russian], Atomizdat, Moscow (1980), pp. 68–105.
Nyein Chang Aung, “Effect of propellant composition on the effectiveness of combustion catalysts,” Candidate’s Dissertation in Tech. Sci., Moscow (2008).
G. V. Belov, “REAL program complex for modeling equilibrium states of thermodynamic systems at high temperature and pressure. Version 3.5,” Bauman State Technical University, Moscow (2003).
A. I. Rozlovskii, “Thermal regime of combustion of carbon-rich mixtures of subcritical compositions,” Dokl. Akad. Nauk SSSR, 186, No. 2, 373–376 (1969).
V. A. Bunev and V. S. Babkin, “Effect of superadiabatic temperatures in the autoignition of dimethyl ether mixtures,” Mendeleev Commun., 19, 290–291 (2009).
N. V. Lavrov, V. V. Korobov, and V. I. Filippova, Thermodynamics of Gasification and Synthesis from Gases [in Russian], Izd. Akad. Nauk SSSR, Moscow (1960).
A. P. Denisyuk and Yu. G. Shepelev, “Interaction of carbonaceous materials with gunpowder gases,” Combust., Expl., Shock Waves, 25, No. 4, 403–410-32 (1989).
R. Myer, J. Köhler, and A. Homburg, Explosives, Wiley VCH Verlag GmbH and Co. KGaA (2002).
K. Tinius, Plasticizers [in Russian], Khimiya, Moscow-Leningrad (1964).
V. V. Aleksandrov and S. S. Khlevnoi, “Kinetics of heat release in the condensed phase of pyroxylin at elevated temperatures,” J. Appl. Mech. Tech. Phys., No. 1, 162–166 (1970).
B. A. Lur’e and B. S. Svetlov, “Kinetic characteristics of the primary stage of thermal decomposition of organic nitrates,” Kinet. Katal., 35, No. 2, 165–175 (1994).
Z. I. Aristova and O. I. Leipunskii, “On the heating of the surface of a burning propellant,” Dokl. Akad. Nauk SSSR, IIV, No. 6, 507–509 (1946).
Shao Ziqiang, “Thermodynamics of plasticizing cellulose nitrate by di- and tri-ethylene glycol nitrates,” Abstracts Candidate’s Dissertation in Chem. Sci., Moscow (1998).
A. G. Merzhanov, “Role of dispersion in propellant combustion,” Dokl. Akad. Nauk SSSR, 135, No. 6, 1439–1441 (1960).
Author information
Authors and Affiliations
Corresponding author
Additional information
__________
Translated from Fizika Goreniya i Vzryva, Vol. 47, No. 2, pp. 66–73, March–April, 2011.
Rights and permissions
About this article
Cite this article
Denisyuk, A.P., Htwe, Y.Z. Temperature profile in the combustion wave of low calorific value propellants. Combust Explos Shock Waves 47, 185–192 (2011). https://doi.org/10.1134/S0010508211020079
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0010508211020079