DocumentCode :
975005
Title :
Thin-film strain gauge sensors for ion thrust measurement
Author :
Stephen, R. John ; Rajanna, K. ; Dhar, Vivek ; Kumar, K. G Kalyan ; Nagabushanam, S.
Author_Institution :
Dept. of Instrum., Indian Inst. of Sci., Bangalore, India
Volume :
4
Issue :
3
fYear :
2004
fDate :
6/1/2004 12:00:00 AM
Firstpage :
373
Lastpage :
377
Abstract :
In order to measure the thrust produced by a stationary plasma thruster, a measurement system has been developed using a thrust balance with thin-film strain gauge sensors. For this purpose, strain gauges were designed and deposited on the columns of the thrust balance fabricated and necessary signal conditioning circuits have been used. The performance of the system developed was studied, in a vacuum chamber under space simulated conditions, by activating the thruster. In situ calibration was done using Lami´s principle. For discharge powers varying from 210-275 W, the measured values of thrust were found to be in the range of 11-16 mN with an accuracy of ±1 mN and resolution of 0.12 mN. Specific impulse and efficiency were also estimated.
Keywords :
aerospace propulsion; calibration; electric propulsion; ion engines; strain gauges; strain sensors; thin films; 210 to 275 W; Land principle; calibration; discharge powers; ion thrust measurement; measurement system; signal conditioning circuits; space simulated; stationary plasma thruster; strain gauge sensors; thin-film; thrust balance; vacuum chamber; Calibration; Capacitive sensors; Circuit simulation; Plasma measurements; Sensor systems; Signal design; Strain measurement; Thin film circuits; Thin film sensors; Vacuum systems; Stationary plasma thruster; thin-film strain gauge; thrust balance;
fLanguage :
English
Journal_Title :
Sensors Journal, IEEE
Publisher :
ieee
ISSN :
1530-437X
Type :
jour
DOI :
10.1109/JSEN.2004.827276
Filename :
1294918
Link To Document :
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