|Table of Contents|

Research on detonation wave formation of methane/oxygen detonation wave igniter(PDF)

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

Issue:
2021年03期
Page:
26-34
Research Field:
研究与设计
Publishing date:

Info

Title:
Research on detonation wave formation of methane/oxygen detonation wave igniter
Author(s):
LI Shuxin; HU Hongbo; XU Hongwei
Science and Technology on Liquid Rocket Engines Laboratory,Xi'an Aerospace Propulsion Institute, Xi'an 710100,China
Keywords:
detonation wave;  flame acceleration;  methane;  liquid rocket engine
PACS:
V231.2
DOI:
-
Abstract:
In order to understand the working characteristics of detonation wave igniter for LOX/CH4 rocket engine,the detonation wave formation of methane/oxygen under low supply pressure was investigated by experiment.The effects of ignition sequence,mixing ratio and other parameters on detonation wave parameters,the effect of enhancement measures of deflagration to detonation transition on detonation wave formation,and the effect of structure size on detonation wave parameters in bent pipe were analyzed.The results show that: 1)Under different equivalent ratios,the working status of the detonation wave igniter can be divided into detonation,fast flame,slow flame,global quenching and unignited states.When the blockage ratio is in the range of 0.12～0.42,the range of equivalent ratio that can produce detonation increases with the increased blockage ratio.When the equivalent ratio is about 1.5,the blockage ratio has little effect on the formation of detonation wave.2)U shape tubes and the spring in it have suppression effect on the flame for the detonation wave with high pressure and fast speed.In addition,for the flame with low pressure and slow propagation speed,it can play an enhanced role.

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