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Investigation of a novel HAN-based monopropellant and its catalytic decomposition performance(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2018年02期
Page:
39-45
Research Field:
研究与设计
Publishing date:

Info

Title:
Investigation of a novel HAN-based monopropellant and its catalytic decomposition performance
Author(s):
BAO Shiguo; GONG Xubin; CHEN Yi; SHEN Lianhua; FANG Tao
Beijing Key Laboratory of Research and Application for Aerospace Green Propellants,Beijing Institute of Aerospace Testing Technology,Beijing 100074,China
Keywords:
hydroxylammonium nitrate;  monopropellant;  5 N thruster;  ground test;  catalytic decomposition activity
PACS:
V511-34
DOI:
-
Abstract:
A novel advanced HAN-based monopropellant is introduced and its catalytic decomposition performances tested in 5 N thruster is investigated. The catalytic activity and theoretical combustion temperature of the monopropellant are estimated by droplet test and thermodynamic calculations separately. Several performances,such as starting performance,catalytic decomposition activity,stability of steady state and pulse,are investigated by starting at 120 ℃,and in 10 s and 20 s steady state firings,1 200 s long steady state firing and multi-pulse firing. The propellant damage to the catalyst is evaluated. The evaluation result indicates that the novel HAN-based monopropellant has high catalytic decomposition activity and suitable theoretical combustion temperature,can start at preheat temperature of 120 ℃,and accomplish series of steady state and pulse firings. The accumulated firing time is longer than 2 000 s. The maximum of combustion temperature is lower than 1 150 ℃. After hot firing test,no cavity is observed in the catalyst bed,the integrated catalyst granules are obtained and the total mass loss rate of catalyst is less than 5%. Thus,excellent catalytic decomposition and combustion performances of the novel HAN-based monopropellant,as well as its compatibility with catalyst were proven in the test.

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