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Nonlinear analysis method for dynamic responding characteristics of cryogenic pneumatic valve(PDF)

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

Issue:
2013年06期
Page:
23-28
Research Field:
研究与设计
Publishing date:

Info

Title:
Nonlinear analysis method for dynamic responding characteristics of cryogenic pneumatic valve
Author(s):
QIN Yong-tao;  SHEN Ji-bin;  LI Jian-jun;  ZENG Xiao-jun
Xi'an Aerospace Propulsion Test Technique Institute, Xi'an 710100, China
Keywords:
nonlinear analysis method: cryogenic pneumatic valve;  dynamic respond
PACS:
V432-34
DOI:
-
Abstract:
To shorten the dynamic responding time of cryogenic pneumatic valve, reduce the calculated amount of nonlinear solution for valve dynamic response, and improve the reliability and security of cryogenic pneumatic valve, a dynamic responding non-linear transferring model of cryogenic valve were built in accordance with the operating principle of cryogenic pneumatic valve. Afterwards, based on four-stage Runge-Kutta algorithm, a nonlinear dynamics solution method for the dynamic recursive Runge-Kutta algorithm was constructed by means of the introduction of variable step length coefficient and definition oblivion factor. A scheme to improve the response speed is proposed. This method was demonstrated and validated by a sample. Consequently, this method has offered guidance for reducing dynamic responding time of cryogenic pneumatic valve, and provided a support for improving the ability to rationally and exactly evaluate the performance of liquid rocket engine.

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