The influence of aluminum powder dispersity on composite solid propellants ignitability by laser radiation

Vladimir A. Arkhipov, Alexander G. Korotkikh

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The results of experimental study of ignition process of composite solid propellants based on ammonium nitrate and energetic binder containing aluminum powders of various particle sizes by CO2-laser radiation in air (with ambient pressure) are presented. Partial or complete replacement of micron-sized aluminum powder on Alex ultrafine powder as part of composite solid propellants leads to the reduction of ignition time by decrease the temperature of burning surface, thickness of reaction layer and by increase of the heating rate in condensed phase. It was found that the efficiency of ultrafine aluminum powder additives in formulations increasing with decreasing of laser radiation intensity. The temperature of the formulation's burning surface at the ignition moment was measured by usage of the thermal imager. The temperature of burning surface under ignition by radiant heat flux was 545-660°C (formulations containing ultrafine aluminum powder) and 713-820°C (formulations with micron-sized aluminum powder) for the radiation intensity 60W/cm2.

Original languageEnglish
Pages (from-to)409-415
Number of pages7
JournalCombustion and Flame
Volume159
Issue number1
DOIs
Publication statusPublished - 2012

Keywords

  • Aluminum powders dispersity
  • Burning surface temperature
  • Composite solid propellants
  • Ignition time
  • Laser radiation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Chemistry(all)

Fingerprint Dive into the research topics of 'The influence of aluminum powder dispersity on composite solid propellants ignitability by laser radiation'. Together they form a unique fingerprint.

  • Cite this