|Table of Contents|

Flutter feature and its prevention strategies of the double pressurization check valves connected in series(PDF)

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

Issue:
2022年05期
Page:
46-53
Research Field:
目次
Publishing date:

Info

Title:
Flutter feature and its prevention strategies of the double pressurization check valves connected in series
Author(s):
ZHANG Weixing1;  LIU Jiatian1;  CHEN Erfeng2
(1.Wenchang Aerospace Launch Site, Xichang Sattelite Launch Center,Wenchang 571300, China 2.Beijing Institute of Astronautical Systems Engineering,China Aerospace Science and Technology Corporation, Beijing 100076, China)
Keywords:
double check valves tank pressurization flutter feature AMESim tube capacity flutter prevention strategies
PACS:
V434 TH138
DOI:
-
Abstract:
In order to solve the gas leakage problem of the check valves applied in the tank of new generation rockets, structure and working principles of the check valve were analyzed, and the AMESim model of the double pressurization check valves connected in series was created.Based on this numerical model, the flutter feature of the spool was studied, and the results indicate that compared with the single check valve model, the flutter phenomenon will be more severe after two check valves were connected in series.Besides, if the tube capacity between two check valves was increased, the flutter phenomenon will be weakened effectively.At last, three flutter prevention strategies were proposed, and contrastive research on the technical feasibility between different prevention strategies was conducted according to the numerical analysis results and the engineering experience.The study results obtained will be helpful to improve the reliability of the tank pressurization system in new generation rockets.

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