|Table of Contents|

Study on reliability of stainless steel tube for self-pressurization oxygen tank of launch vehicle(PDF)

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

Issue:
2015年06期
Page:
105-110
Research Field:
测控与试验
Publishing date:

Info

Title:
Study on reliability of stainless steel tube for self-pressurization oxygen tank of launch vehicle
Author(s):
ZHAO Yaozhong;  ZHENG Ran;  PENG Longtao;  LIU Yi
Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
Keywords:
launch vehicleoxygen self-pressurizationstainless steel tubetest system
PACS:
V434-34
DOI:
-
Abstract:
The reliability of self-pressurization stainless steel tube connecting with rocket oxygen tank was analyzed and tested. The result of theory analysis indicates that the redundant elements (metal powder) existing in the tube system is the main factor to affect the system reliability. A safety testing system was designed and manufactured, in which the oxygen flow temperature at the inlet was raised to 380～410 K by heat exchange with hot water, and the oxygen flow pressure at the inlet was 1 MPa. Powders of the redundant element are 5 kinds of metal material which is commonly used in rocket propulsion system. The diameter of the powders is about 10～500 μm. Two 400 s doped tests of high-temperature oxygen flow were conducted. The result indicates that the stainless self-pressurization tube can satisfy its working environment, and that the high-temperature oxygen flow with some metal powders can not cause burning or blast accident. In addition, the test also demonstrates that the high-temperature oxygen flow can be obtained safely by heat water exchange, which can

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