|Table of Contents|

Design and experimental study of gas oxygen/methane torch igniter(PDF)

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

Issue:
2022年03期
Page:
57-62
Research Field:
研究与设计
Publishing date:

Info

Title:
Design and experimental study of gas oxygen/methane torch igniter
Author(s):
WANG Yukun;  WANG Mei;  ZHANG Feng;  FENG Jianchang
(Xian Aerospace Propulsion Institute, Xian 710100,China)
Keywords:
liquid oxygen/methane rocket engine torch igniter combustion chamber experimental study
PACS:
V433-34
DOI:
-
Abstract:
For a liquid oxygen/methane rocket engine, in order to develop an igniter for multiple uses, a design scheme of variable structure gas oxygen/gas methane torch igniter was proposed.According to the design requirements and technical indexes, the tests of variable structure, variable indent length and variable mixing ratios were carried out to verify the reliability of the igniter design.The experimental results show that the higher the mixing ratio is, the higher the combustion chamber pressure is, while the secondary combustion at the outlet does not change.The change of indent length does not affect the combustion chamber pressure and the afterburning at outlet is similar.The mixing of the discharged methane and the oxygen-enriched fuel gas at the outlet can effectively promote the secondary combustion at the outlet, and the shrinkage outlet can effectively enhance the mixing.The diameter of the ignition duct can effectively change the outlet speed, and the decrease of the outlet speed can effectively promote the mixing of methane in the discharge path and the central gas, which is conducive to stable combustion.

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