|Table of Contents|

Application of vibrator in thrust vector measurement turntable for orbit-control engine of satellite(PDF)

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

Issue:
2015年03期
Page:
98-102
Research Field:
测控与试验
Publishing date:

Info

Title:
Application of vibrator in thrust vector measurement turntable for orbit-control engine of satellite
Author(s):
LIU Wan-long;  SUN Shu-jiang;  SHAO Shuai;  TIAN Guo-hua;  ZHU Hao-wei
Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
Keywords:
vibratororbit-control enginethrust vectorturntable
PACS:
V434-3
DOI:
-
Abstract:
Engine of 490 N thrust is the most widely-used orbit-control engine in Chinese satellites. The control of satellite orbit is influenced greatly by the oblique angle and offset of thrust vector. Turntable is the common thrust vector measuring device of the 490 N engine. Principal shaft is the moving support in the turntable. The moving support can slip axially by the bearing. In order to reduce the friction influence on axial thrust calibration, a vibrator was tried to set up on the turntable. Through data analysis of three tests before and after using the vibrator, it was found that the standard deviations of main thrust force and specific impulse were decreased. It is a worthy research direction to improve the measurement precisions of the main thrust force and specific impulse by using the vibrator in the turntable. However, the test data got now is not enough, and further tests are still needed to prove this result. The influences of the vibrator output force and frequency

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