Explosive Materials Combustion by Heated Wires

  • I. V. Kondakov Russian Federal Nuclear Centre,
  • B. G. Loboika Russian Federal Nuclear Centre, Snezhinsk Chelyabinsk Region
  • V. A. Pestrechikhin Russian Federal Nuclear Centre, Snezhinsk Chelyabinsk Region
Keywords: Ignition parameters, Ignition temperature, Ignition Kinetics

Abstract

The knowledge of ignition parameters of explosive materials (EM) presents both the definite scientific interest for developing the ignition kinetics models and the practical interest from the point of view of their danger assessment. The present investigations, as opposed to the known technique for EMs ignition temperature determination, have been performed by using the model explosive material samples of high density which have been produced on the basis of HMX and TATB. Applying the technique of firing ballistic powders by a heated wire, the EM ignition temperature depending on the time (rate) of heating has been investigated. The technique makes it possible to calculate heat pulses and heat flows leading to ignition. By decreasing the heat flow, the time for the EM heating up to ignition increases and temperature falls thereby approaching the critical value, characterising the danger limit under accidents associated with heating. The ignition of EM based on HMX and TATB takes place in a different manner. With the EM on the basis of HMX and with great heat flows. The ignition beginning from the surface in the form of flash is typical but when achieving the critical parameters, the heated layer flash takes place that increases the probability of the explosion realisation. EM based on TATH always ignite in the form of combustion from the surface, independent of the heat flow that points to the higher extent of its safety. These data correlate well with the higher parameters of its ignition.

Author Biographies

I. V. Kondakov, Russian Federal Nuclear Centre,
Dr IV Kondakov did his graduation from Kazan Chemical-Technological Institute in 1964. Hehas been a staff member of VNIITF since 1965. Presently, he is a working at the'Russian Federal Nuclear Centre-Research Institute of Technical. Physics, Russia as Division Dy. Chief Engineer.His area of specialisation is industrial engineering.
B. G. Loboika, Russian Federal Nuclear Centre, Snezhinsk Chelyabinsk Region
Dr BG Loboiko did his graduation from Moscow Physics Engineering Institute, in 1960. He has been a staff member of VNIITF since 1961. Presently, he is working at the Russian Federal Nuclear Centre-Research Institute of Technical Physics as Dy. Chief Engineer. He is the recipient of USSR State Prize (1983) and Scientist of the Russian Federation (1998).
V. A. Pestrechikhin, Russian Federal Nuclear Centre, Snezhinsk Chelyabinsk Region
Dr VA Pestrechikhin did his graduation from Ural Polytechnical Institute in 1979. He has been a staff member of VNIITF since 1972. Presently, he is working at the Russian Federal Nuclear Centre-Research Institute of Physics.

References

Zarko, V.E.; Khlevnoy, S.S. Ballistic powder combustion by heated wires. J. Phy Combust. Expl., 1968, (I), 158-69.

Published
2013-01-01
How to Cite
KondakovI., LoboikaB., & PestrechikhinV. (2013). Explosive Materials Combustion by Heated Wires. Defence Science Journal, 49(3), 269-273. https://doi.org/10.14429/dsj.49.3839
Section
Armaments & Explosives