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Droplet Electric Ignition Characteristics of New HAN-based Liquid Propellant EMP-01
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1.School of Energy and Power Engineering,Nanjing University of Science and Technology, Nanjing 210094, China;2.Shanghai Institute of Space Propulsion, Shanghai 201112, China

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    Abstract:

    In order to explore the droplet ignition characteristics of a new type of hydroxylamine nitrate(HAN)-based liquid propellant EMP-01, a droplet electric ignition experimental platform was built by placing the droplet in a hemispherical groove and inserting the electrode. The electrical ignition characteristics of EMP-01 droplets under the conditions of droplet diameter of 6.5 mm, electrode spacing of 0.5 mm and voltage loading rate of 86.31 V·s-1 were studied, and the ignition delay time under this condition was determined. At the same time, the variation law of droplet ignition delay time and combustion process was also studied within 34.20-246.37 V·s-1 under the condition of constant droplet diameter and electrode spacing. The results show that the droplet separation of EMP-01 undergoes three stages: heating, thermal decomposition and combustion, and there is a periodic expansion and contraction process in the thermal decomposition stage. When the voltage loading rate is 34.20 V·s-1, the EMP-01 droplet cannot be successfully ignited; When the voltage loading rate is 49.49-246.37 V·s-1, the ignition delay time decreases gradually with the increase of voltage loading rate, but with the increase of voltage loading rate, the decrease rate of ignition delay time gradually slows down.

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刘冲,姚天亮,薛晓春,等.新型HAN基液体推进剂EMP-01液滴电点火特性[J].含能材料,2023,31(9):895-902.
LIU Chong, YAO Tian-liang, XUE Xiao-chun, et al. Droplet Electric Ignition Characteristics of New HAN-based Liquid Propellant EMP-01[J]. Chinese Journal of Energetic Materials,2023,31(9):895-902.

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History
  • Received:May 11,2023
  • Revised:September 05,2023
  • Adopted:August 25,2023
  • Online: September 01,2023
  • Published: September 25,2023