Investigation on Behavior of HAN-based Propellant Droplet at High Temperature

고온에서 HAN 계열 추진제 액적의 거동에 대한 연구

  • 황창환 (한국과학기술원 기계항공 시스템 공학부) ;
  • 백승욱 (한국과학기술원 기계항공 시스템 공학부) ;
  • 한조영 (한국항공우주연구원 위성 열/추진 팀) ;
  • 김수겸 (한국항공우주연구원 위성 열/추진 팀) ;
  • 전형열 (한국항공우주연구원 위성 열/추진 팀)
  • Published : 2012.11.30

Abstract

The droplet behavior of 83.9 wt.% HAN water solution was investigated experimentally with various ambient temperature and nitrogen environment. At the initial stage of evaporation under thermal decomposition temperature of HAN, gradual decreasing of droplet diameter was observed. After that, the droplet started to expand due to the internal pressure build up by water nucleation inside the droplet. The micro explosion was observed at higher temperature than the decomposition temperature of HAN and the remaining droplet showed similar behavior of single composition droplet. The decreasing rate was augmented as the ambient temperature increasing.

Acknowledgement

Supported by : 한국항공우주연구원