|Table of Contents|

Performance sensitivity analysis of liquid oxygen/methane rocket engine(PDF)

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

Issue:
2020年01期
Page:
59-68
Research Field:
研究与设计
Publishing date:

Info

Title:
Performance sensitivity analysis of liquid oxygen/methane rocket engine
Author(s):
GONG Yanbo;  ZHENG Dayong;  WANG Weibin
(Beijing Aerospace Propulsion Institute, Beijing 100076, China)
Keywords:
sensitivity analysis;  rocket engine;  variance analysis;  orthogonal test
PACS:
V434文献标识码:A 文章编号:1672-9374(2020)01-0059-10
DOI:
-
Abstract:
In order to make up for the deficiency of range analysis method in engine performance sensitivity analysis and improve the accuracy of performance sensitivity analysis of cryogenic rocket engine, variance analysis method was introduced in this paper.Taking a liquid oxygen/methane engine for example, performance sensitivity analysis was carried out, and the significance index of each interference factor on engine performance was obtained through F test.Compared with the traditional range analysis method, the variance analysis method improves the accuracy of performance sensitivity analysis of liquid rocket engine.The results show that the sensitivity of engine thrust and mixing ratio to the same factor is different, among which the turbopump efficiency has the greatest influence on both engine thrust and mixing ratio.The second most significant impact on thrust is the flow resistance characteristics of the subsystem, while the second most significant impact on mixing ratio is the flow resistance characteristics of the main system.The results of this study show that ANOVA can effectively improve the accuracy of sensitivity analysis, which not only provides theoretical support for the development of this type of engine, but also provides a new reference for sensitivity analysis of other engines.

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Last Update: 2020-02-25