g-LIMIT - A microgravity vibration isolation system for the International Space Station

2001 ◽  
Author(s):  
Mark Whorton
Keyword(s):  
International Space Station ◽  
Vibration Isolation ◽  
Space Station ◽  
Isolation System ◽  
Vibration Isolation System ◽  
International Space

Dynamic Simulation of Muscle Loading During ARED Squat Exercise on the International Space Station

2013 ◽  
Author(s):  
Christopher D. Fregly ◽  
Brandon T. Kim ◽  
John K. De Witt ◽  
Benjamin J. Fregly
Keyword(s):  
International Space Station ◽  
Vibration Isolation ◽  
Space Station ◽  
Critical Issue ◽  
Force Transmission ◽  
Isolation System ◽  
International Space ◽  
Long Duration ◽  
Squat Exercise ◽  
Muscle Moments

Loss of muscle mass due to reduced mechanical loading is a critical issue for long duration spaceflight on the International Space Station (ISS) [1]. To address this issue, NASA has developed the Advanced Resistive Exercise Device (ARED) that allows astronauts to perform resistance exercise on the ISS. To minimize force transmission to the ISS, the ARED is mounted to a vibration isolation system (VIS). During squat exercise, ARED rotates relative to the ISS, functioning like a nutcracker to compress the astronaut with a load provided by two vacuum cylinders. Though the ARED is an effective exercise countermeasure device, the extent to which squat exercise on the ISS achieves Earth-equivalent muscle moments remains unknown.

Evaluation of a Treadmill with Vibration Isolation and Stabilization (TVIS) for Use on the International Space Station

1999 ◽  
Vol 15 (3) ◽  
pp. 292-302 ◽  
Author(s):  
Jean L. McCrory ◽  
David R. Lemmon ◽  
H. Joseph Sommer ◽  
Brian Prout ◽  
Damon Smith ◽  
...  
Keyword(s):  
International Space Station ◽  
Vibration Isolation ◽  
Space Station ◽  
Lower Extremities ◽  
Structural Safety ◽  
Microgravity Environment ◽  
Zero Gravity ◽  
Experimental Conditions ◽  
International Space ◽  
Angular Displacements

A treadmill with vibration isolation and stabilization designed for the International Space Station (ISS) was evaluated during Shuttle mission STS-81. Three crew members ran and walked on the device, which floats freely in zero gravity. For the majority of the more than 2 hours of locomotion studied, the treadmill showed peak to peak Linear and angular displacements of less than 2.5 cm and 2.5°, respectively. Vibration transmitted to the vehicle was within the microgravity allocation limits that are defined for the ISS. Refinements to the treadmill and harness system are discussed. This approach to treadmill design offers the possibility of generating 1G-like loads on the lower extremities while preserving the microgravity environment of the ISS for structural safety and vibration free experimental conditions.

Active rack isolation system development for the International Space Station

1997 ◽  
Author(s):  
Glenn Bushnell ◽  
Tyler Anderson ◽  
Marc Becraft ◽  
A. Jacot ◽  
Glenn Bushnell ◽  
...  
Keyword(s):  
International Space Station ◽  
System Development ◽  
Space Station ◽  
Isolation System ◽  
International Space

Flight performance of the International Space Station active rack isolation system

2003 ◽  
Vol 114 (4) ◽  
pp. 2383-2384 ◽  
Author(s):  
Glenn S. Bushnell ◽  
Ian J. Fialho ◽  
James L. Allen ◽  
Naveed Quraishi
Keyword(s):  
International Space Station ◽  
Space Station ◽  
Flight Performance ◽  
Isolation System ◽  
International Space

Recent Measurements of Experiment Sensitivity to G-Jitter and Their Significance to ISS Facility Development

1998 ◽  
Vol 551 ◽  
Author(s):  
R. A. Herring ◽  
B. Tryggvason
Keyword(s):  
International Space Station ◽  
Vibration Isolation ◽  
Space Shuttle ◽  
Space Station ◽  
Experimental Measurements ◽  
International Space ◽  
Microgravity Experiments ◽  
Experimental Facilities ◽  
Better Than

AbstractRecent experimental measurements of various microgravity experiments have been taken on the Mir and Space Shuttle under different conditions of microgravity using the Microgravity-vibration Isolation Mount (MIM). The results to date show a clear difference when the experimental measurements are taken from g-levels offered by the Mir and the Space Shuttle (non isolated) to g-levels offered by MIM (isolated) which have been reduced by two orders of magnitude. Concern for the International Space Station (ISS) experimental facilities arises when the quality of microgravity on the Mir and Space Shuttle (non isolated), which is believed to be not good enough, has been measured to be better than the ISS Requirement established by NASA for isolated racks, which will be significantly better than those racks not isolated.

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