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Chase Camarotti1
Estimated H-index: 1
(University of Florida),
Oscar Deng (University of Florida), Samuel Darr7
Estimated H-index: 7
(University of Florida)
... more
The purpose of a liquid acquisition device (LAD) is to separate liquid and vapor phases inside a spacecraft propellant storage tank in the reduced gravity and microgravity conditions of space so that vapor-free liquid can be extracted to the transfer line. A popular type of LAD called a screen channel LAD or gallery arm, uses a fine porous screen and surface tension forces of the liquid to allow pure liquid to flow through the screen while blocking vapor penetration. To analyze, size, and optimi...
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Momoko Tomaru (Waseda University), Takuma Osada (Waseda University), Isamu Orikasa (Waseda University)... more
The Soret-Facet mission was conducted under microgravity conditions to measure the Soret coefficient (ST) for salol/tert-butyl alcohol using a two-wavelength Mach-Zehnder Interferometer (2-MZI). The 2-MZI is useful in the simultaneous measurement of temperature and concentration in binary mixtures. However, the simultaneous analysis of the 2-MZI had the limitation in accurate determination of ST because of the uncertainties in the experimental values of coefficients of refractive indices. To red...
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Chu Zhang (Chinese Academy of Sciences), Jianwu He (Chinese Academy of Sciences), Li Duan7
Estimated H-index: 7
(Chinese Academy of Sciences)
... more
This paper addresses the problem of designing an active disturbance rejection controller for a high accuracy drag-free satellite with cubic test mass. The uncertain model of the drag-free satellite is defined. The performance requirement imposed on the acceleration of the test mass is broken down into specification of drag-free and suspension loop because of the disturbance decoupling controller, which is based on the linear active disturbance rejection control technique. We derive two-degree in...
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V V Nikhil (Indian Institute of Technology Madras), Abhilash T. Nair2
Estimated H-index: 2
(Indian Institute of Technology Madras),
Niketh P (Indian Institute of Technology Madras)... more
Space missions involving humans require a better understanding of various phenomena happening in space environments. A number of experiments need to be conducted in microgravity for addressing various issues encompassing safety (primarily fire) and better understanding of fluid and material behaviour. Of the various methods used for obtaining microgravity conditions, drop towers offer ground based microgravity platform. They provide a cost effective platform for doing short duration, repeatable,...
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Ji-Cheng Li1
Estimated H-index: 1
(Chinese Academy of Sciences),
Hai Lin1
Estimated H-index: 1
(Chinese Academy of Sciences),
Jian-Fu Zhao12
Estimated H-index: 12
(Chinese Academy of Sciences)
... more
The oscillation of liquid/gas free surface in a partially filled storage tank caused by an abrupt drop of gravity level is of critical importance for the fluids management in space. In present study we investigate the dynamic behavior of free surface in tank models (tubes) using water as the working medium utilizing the Drop Tower Beijing, which can provide a 3.6s short-term microgravity condition. Meanwhile, the corresponding numerical simulation using volume of fluids (VOF) methods was carried...
1 Citations Source Cite
Panpan Li1
Estimated H-index: 1
(Southeast University),
Zhenqian Chen11
Estimated H-index: 11
(Southeast University),
Juan Shi5
Estimated H-index: 5
(Southeast University)
A volume of fluid (VOF) method is adopted to simulate the condensation of R134a in a horizontal single square minichannel with 1 mm side length. The effect of gravity, surface tension and gas-liquid interfacial shear stress are taken into account. The result denotes that condensation is first appeared at the corner of channel, and then the condensation is stretched at the effect of surface tension until the whole channel boundary covered. The effect of gravity on the distribution of the liquid f...
5 Citations Source Cite
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