|Table of Contents|

Calculation method of axial force in turbopump based on serial stiffness model(PDF)

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

Issue:
2020年06期
Page:
30-34
Research Field:
研究与设计
Publishing date:

Info

Title:
Calculation method of axial force in turbopump based on serial stiffness model
Author(s):
LI Aimin1; JIN Lu1; MIAO Xusheng2; LI Huimin1; LI Chunle1
(1.Xi'an Aerospace Propulsion Institute, Xi'an 710100, China; 2.Northwest Polytechnical University, Xi'an 710072, China)
Keywords:
turbopump;  axial force;  serial stiffness model;  bearing
PACS:
V434.21
DOI:
-
Abstract:
The axial force of rotor is an important parameter in the working process of liquid rocket engine turbopump.Controlling the axial force of rotor within the load carrying capacity that the main bearing, which is the foundation that turbopump can work in stability and reliability.Based on the serial stiffness model and the finite element analysis, combined with the test data of shaft displacement and the static stiffness of the bearing, the axial load of rotor shaft system in an engine turbopump was obtained.The relative error between the calculated value and the experimental value was 4.1%.By using this method, the rotor displacement and the axial load can be verified during the turbopump test, and the reliability of the test data can be improved.Therefore, it guarantees the success rate of test, and reduces the test time and expense.

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