Temperature coefficient of burning rate of condensed mixtures at different component ratios
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The dependence of the burning rate u on the initial temperature T0 has been studied for model mixtures of ammonium perchlorate and polystyrene, polymethyl methacrylate, polyformaldehyde, and bitumen. In all cases, with increase in T0 the burning rate increases monotonically. The relation u(T0) may conveniently be characterized by the temperature coefficient β=(d ln u)/(d T0).
The temperature coefficient strongly depends on the fuel-oxidizer ratio α. The curve β(α) has a minimum, whose position coincides with that of the maximum burning rate.
For mixtures not too far from stoichiometric the temperature coefficient increases with increase in the oxidizer particle size.
The experimental results are in agreement with the notion that the value of β is determined by the temperature Tg in the zone that influences the burning rate; if Tg is large, β is small and, conversely, if Tg is small, β is large.
KeywordsPolystyrene Methacrylate Polymethyl Methacrylate Model Mixture Perchlorate
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- 1.T. Ito, 3rd International Symposium on Rockets and Astronautics, Tokyo, p. 295, 1962.Google Scholar
- 2.D. K. Kuehl, 8th Symposium (International) on Combustion, p. 510, 1962.Google Scholar
- 3.S. Heimel and R. C. Weast, 6th Symposium (International) on Combustion, p. 296, 1957Google Scholar
- 4.L. N. Khitrion, Physics of Combustion and Explosion [in Russian], Moscow, Izd. MGU, 1957.Google Scholar
- 5.A. O. Dekker and G. A. Zimmerman, Ind. Eng. Chem., Prod. Res. Develop.,1, 1, 23, 1962.Google Scholar
- 6.A. F. Belyaev and G. V. Lukashenya, DAN SSSR,148, 6, 1327, 1963.Google Scholar
- 7.A. F. Belyaev and G. V. Lukashenya, PMTF,6, 114, 1963.Google Scholar
- 8.N. N. Bakhman and D. P. Polikarpov, Izv. AN SSSR, OTN, Energetika i avtomatika,4, 37, 1961.Google Scholar
- 9.N. N. Bakhman, ZhFKh,39, 3, 764, 1965.Google Scholar