|Table of Contents|

Temperature control of oxygen-riched gas during complete self start-up process for staged combustion cycle engine(PDF)

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

Issue:
2020年03期
Page:
33-40
Research Field:
研究与设计
Publishing date:

Info

Title:
Temperature control of oxygen-riched gas during complete self start-up process for staged combustion cycle engine
Author(s):
GUAN Jie1; LIU Shang1; LIU Zhirang2
(1. Science and Technology on Liquid Rocket Engine Laboratory,Xi’an 710100,China; 2. Academy of Aerospace Propulsion Technology,Xi’an 710100,China)
Keywords:
liquid rocket engine;  staged combustion cycle engine;  complete self-starting;  temperature of oxygen-riched gas
PACS:
V434.2
DOI:
-
Abstract:
To avoid the ablation during the complete self-starting process of staged combustion cycle engine using an oxidant gas generator, it is necessary to study the method of reducing the peak temperature of oxygen-riched gas. Using the mature mathematical model of engine components, a transient simulation model of engine self-starting process was established, and it was validated by the test data. Based on the calculation results, the temperature change of oxygen-riched gas in the generator during the start-up process was analyzed, and the reason for the three temperature maxima was further analyzed. The influence of different starting parameters on the peak temperature of oxygen-riched gas was analyzed by means of the numerical simulation. The results show that several solutions could be taken to control the peak temperature during start-up process, including improving the oxidizer flow and slowing down the growth rate of secondary fuel flow. The specific measures include increasing the oxidizer tank pressure, reducing the length of supply line, increasing the actuation pressure of stage valve and reducing its conversion rate

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Last Update: 2020-06-25