|Table of Contents|

Study on thermal control of 25 N bipropellant engine(PDF)

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

Issue:
2015年02期
Page:
38-42
Research Field:
研究与设计
Publishing date:

Info

Title:
Study on thermal control of 25 N bipropellant engine
Author(s):
CHEN Yang-chun
Shanghai Institute of Space Propulsion, Shanghai 201112, China
Keywords:
25 N bipropellant engine;  I-DEAS/TMG;  thermal control design
PACS:
V434-34
DOI:
-
Abstract:
25 N bipropellant engine’s head in the previous propulsion system has only one flange without bracket, so the heat anti-leaching temperature of flange is very high after long time working, which is not conductive to the working performance of the electromagnetic valves at the upstream of the flange. At present, the new 25 N bipropellant engine with the structure of double flanges is used in the propulsion system, but it brings some difficulties to the thermal control due to insulation of the new bracket. In the space of extreme low temperature environment, in order to make the engine temperature meet the index requirements before ignition, it is necessary to make a thermal control measure. In this paper, a 25 N bipropellant engine is taken as the research object, and a physical model is built with the I-DEAS/TMG finite element thermal analysis software to study temperature distribution of the engine head under certain conditions and different combinations of flanges, and to select the best combination of heating power according to the calculated results. At the same time, the appropriate passive thermal control measures are used in accordance with the experience. The result verified in flight test shows that the thermal control design for the 25 N bipropellant engine has high reliability, and can be used for other propulsion systems which are being researched.

References:

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Memo

Memo:
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Last Update: 1900-01-01