|Table of Contents|

Effect of bearing position on dynamic stability of turbopump rotor system in liquid rocket engine(PDF)

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

Issue:
2013年03期
Page:
58-66
Research Field:
研究与设计
Publishing date:

Info

Title:
Effect of bearing position on dynamic stability of turbopump rotor system in liquid rocket engine
Author(s):
DOU Wei;  CHU Bao-xin
Beijing Aerospace Propulsion Institute, Beijing 100076, China
Keywords:
liquid rocket engine turbo-pump;  rotor system;  bearing position;  system dynamic stability
PACS:
V434+.21
DOI:
-
Abstract:
The dynamic stability research about bearing axial position is carried out for the turbine pump nonlinear rotor system of low temperature liquid rocket engine. The dynamics model of nonlinear rotor system is established. The effect of axial position change of both the bearing near the pump and the bearing near the turbine on the stability of the rotor system is respectively researched under conditions of ideal installation and nonideal installation with eccentricity. The variation of instability rotate speed with bearing axial position is given. In this paper, a theoretical foundation is provided for structure design, fault diagnosis, installation and maintenance of the turbine pump rotor system in liquid rocket engine.

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