Effect of G-Jitter on the Thermocapillary Convection Experiment in ISS

被引：10

作者：

Kanashima, Yuta ^{[1
]}

Nishino, Koichi ^{[1
]}

Yoda, Shin-ichi ^{[2
]}

机构：

[1] Yokohama Natl Univ, Yokohama, Kanagawa 2408501, Japan

[2] Japan Aerosp Explorat Agcy, Tsukuba, Ibaraki 3058505, Japan

来源：

MICROGRAVITY SCIENCE AND TECHNOLOGY | 2005年 / 16卷 / 1-4期

关键词：

Amplitude Spectrum; Piezoelectric Actuator; Liquid Bridge; Oscillatory State; Marangoni Number;

D O I：

10.1007/BF02945992

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Effects of g-jitter on the measurement of dynamic surface deformations (DSD) caused by the oscillatory thermocapillary convection in a liquid bridge have been studied experimentally. A vibration table driven by a piezoelectric actuator is constructed to generate g-jitters of realistic amplitude and frequency spectra. A micro-imaging displacement meter is used to measure DSD in the presence of g-jitter. It is shown that the natural DSD in the oscillatory state of thermocapillary convection is well separated in the frequency domain from that caused by harmonic and non-harmonic g-jitters. It is concluded that the DSD measurement in the future ISS experiment is feasible even in the presence of g-jitter there.

引用

页码：285 / 289

页数：5

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