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Numerical simulation of start-up process for 500 t thrust LOX/kerosene staged combustion cycle rocket engine(PDF)

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

Issue:
2014年06期
Page:
1-6
Research Field:
专论与综述
Publishing date:

Info

Title:
Numerical simulation of start-up process for 500 t thrust LOX/kerosene staged combustion cycle rocket engine
Author(s):
LI Cheng;  YANG Yong-qiang;  XU Hao-hai;  LIU Zhan-guo
Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Keywords:
LOX/kerosene rocket engine;  dual-thrust chamber;  staged combustion cycle;  start-up;  numerical simulation
PACS:
V434-34
DOI:
-
Abstract:
500 t thrust LOX/kerosene staged combustion cycle engine is the first liquid propellant rocket engine with dual-thrust chamber system in China. The mathematical model of describing the start-up process of engine was developed based on the characteristics of the heavy-duty engine. The sensitive parameters affecting start-up characteristic of engine were analyzed by means of numerical simulation, so a reasonable start-up scheme of the engine was determined. The research results reveal that the gas generator (GG) should not ignite before the mixing head cavity of the GG has been filled with liquid oxygen, the ignition of the combustion chamber (CC) should lag behind the rise of the temperature of the GG, and the throttle valve should be released to the main passage after start-up of the engine is under control.

References:

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