|Table of Contents|

System scheme of a 30 kN upstage LOX/methane engine(PDF)

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

Issue:
2021年01期
Page:
13-20
Research Field:
研究与设计
Publishing date:

Info

Title:
System scheme of a 30 kN upstage LOX/methane engine
Author(s):
ZHAO Hailong; ZHANG Chengyin; CAO Hongjuan; CHENG Shengqing
(Beijing Aerospace Propulsion Institute, Beijing 100076, China)
Keywords:
upstage;  engine;  LOX/methane;  expander cycle
PACS:
V434.2
DOI:
-
Abstract:
The upstage is an relatively independent stage between the launch vehicle and the spacecraft, it has the ability of orbit transfer and can accurately send the payload into predetermined orbit. The upstage is an effective way to improve the carrying capacity and adaptability of rocket, and the upstage engine is the key to achieve this goal. The upstage with high performance and long-term on orbit needs the main engine with the capabilities on high specific impulse, long-term storage in space and high reliability. Based on those requirements, this paper compared and analyzed the system scheme of the upstage engine. It designed the system scheme of 30 kN engine of the upstage with expander cycle and double turbo-pump, also introduced the research progress of key technologies including the combustion chamber, turbo-pump and engine system integration.The results show that LOX/methane propellant is suitable for long-term on orbit upstage engine. The closed expander cycle engine system is the best choice for long-term on orbit upstage power system; the research results of combustion chamber, turbo-pump and other components have preliminarily proved the feasibility of design scheme of engine system and components. The design of engine prototype assembly and demonstrate scheme lays a good foundation for further research on engine system technology.

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Last Update: 2021-02-20