|Table of Contents|

Swing test technology of bearing in rocket engines(PDF)

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

Issue:
2022年01期
Page:
83-89
Research Field:
测控与试验
Publishing date:

Info

Title:
Swing test technology of bearing in rocket engines
Author(s):
YUAN Junshe; ZHAO Chang’an; YANG Mengbo; WANG Ting
(Science and Technology on Liquid Rocket Engine Laboratory,Xi’an Aerospace Propulsion Institute, Xi’an 710100,China)
Keywords:
rocket engines;  bearing;  swing test;  installation boundary;  test system;  static load;  friction coefficient;  fatigue life
PACS:
V434.3
DOI:
-
Abstract:
In the swing of high thrust rocket engine,unlike design index,the swing-bearing not only bears a large radial load,but also bears a certain bearing load,and realizes low-speed reciprocating swing.In order to obtain the static bearing capacity,friction coefficient and fatigue life,a new bearing test system was designed to simulate the installation boundary and loading form of the bearing under different working conditions.The test results show that the static bearing capacity is not less than 920 kN,the fatigue life is more than 10 times of actual service life under the single and double pendulum,the friction coefficient of the bearing is 0.045(single pendulum)and not more than 0.08(double pendulum).At present,the bearing verified by the scheme has been successfully applied to a certain type of liquid rocket engine for many times.

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