The fluid-dynamic disturbances induced on the ISS, based on the first acceleration measurements on board the space station

The different acceleration components on the ISS that are responsible for the generation of convective motions in a fluid cell either in the presence of density gradients or in quasi-isodense processes, are analyzed. The NASA measurements of the quasi-steady and periodic acceleration on the ISS are...

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Bibliographic Details
Published in:Acta astronautica 2005-07, Vol.57 (1), p.22-30
Main Authors: Monti, R., Savino, R., Paterna, D.
Format: Article
Language:English
Subjects:
Acceleration
Center of mass
Computation
Computer Simulation
Convection
Disturbances
Fluid flow
Gravitation
International Space Station
Mathematical models
Models, Theoretical
Physical Phenomena
Physics
Rheology
Space Flight
Space life sciences
Spacecraft
Vibration
Weightlessness
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Summary:The different acceleration components on the ISS that are responsible for the generation of convective motions in a fluid cell either in the presence of density gradients or in quasi-isodense processes, are analyzed. The NASA measurements of the quasi-steady and periodic acceleration on the ISS are considered and their effects on fluid-dynamic experiments are computed and discussed under different assumptions. In particular, numerical simulations are carried out to identify the relative importance of linear and pendular accelerations, due to possible rotations of the P/L around its center of mass. The effects caused by variable accelerations created by an isolation mount that exhibits an attenuation factor not constant within the payload volume, caused by the reaction forces of the umbilicals, are computed and analyzed.
ISSN:0094-5765
1879-2030
DOI:10.1016/j.actaastro.2004.12.006