Valentin Grozev, Radi Ganev, Ivan Glavchev
ABSTRACT: Investigations were conducted on the effect of ultrasound on single-base propellants. Changes in the average viscosimetric molecular weight of nitrocellulose in the solutions of propellants in acetone and in a mixture of ethyl alcoholdiethyl ether were studied. It has been established that, for at least 60 minutes, the molecular weight decreases exponentially. On-going degradation processes and the effect of cavitation during treatment of the propellants with ultrasound were analyzed. The change in nitrogen content and the heat released were also measured. The absorption coefficients and the sound velocities of the propellants were determined. Using these parameters, the dynamic modulus of elasticity was calculated. The results obtained are used in the processing of propellants for pyrotechnic purposes.
Keywords: single-base, propellants, ultrasound, degradation
Ref: JPyro, Issue 16, 2002, pp53-58
(J16_53)
© Journal of Pyrotechnics and CarnDu Ltd
