Temperature sensitivity of burning

The burning rate of GAP copolymer increases linearly with increasing pressure in an In rversus Inp plot, as shown in Fig. 5.17. The pressure exponent of burning rateat a constant initial temperature, as defined in Eq. (3.71), is 0.44. The temperature sensitivity of burning rate at constant pressure, as defined in Eq. (3.73), is 0.010 K"h... 

The temperature sensitivity of burning rate thus comprises 60 % high-energy propellant is due to the lower activation energy and the higher temperature in the fizz zone as compared to the low-energy propellant. 

Though both propellants contain equal amounts of NC and NG, the burning rate of NC-NG-GAP is approximately 70% higher than that of NC-NG-DEP at Tq = 293 K. The pressure exponent of burning rate remains relatively unchanged at = 0.7 by the replacement of DEP with GAP. However, the temperature sensitivity of burning rate defined in Eq. (3.73) is increased significantly from 0.0038 K" to 0.0083 K- ... 

Kubota, N., and Miyazaki, S., Temperature Sensitivity of Burning Rate of Ammonium Perchlorate Propellants, Propellants, Explosives, Pyrotechnics, Vol. 12,... 

Fig. 8.19 Temperature sensitivity of burning rate decreases with increasing Ihmx. 3nd (gas phase) has a greater effect on than (condensed phase).

The burning rate of propellants is one of the important parameters for the design of rocket motors. The burning rate is obtained as a function of pressure and of initial temperature, from which pressure exponent of burning rate and temperature sensitivity of burning rate are deduced. 

The burning rate of any energetic materials depends also on the initial temperature of the materials, T0, even when the burning pressure is kept constant. The temperature sensitivity of burning rate, ap, is defined by the change of burning rate when T0 is changed as... 

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