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Practical Applications of Cables and Ropes in the ISS Countermeasures SystemNational Aeronautics and Space Administration (NASA) uses exercise countermeasures on the International Space Station (ISS) to maintain crew health and combat the negative effects of long-duration spaceflight on the human body. Most ISS exercise countermeasures system (CMS) equipment rely heavily on the use of textile and wire ropes to transmit resistive loads and provide stability in a microgravity environment. For a variety of reasons, including challenges in simulating microgravity environments for testing and limits on time available for life cycle testing, the textiles and wire ropes have contributed significantly to on-orbit planned and unplanned maintenance time. As a result, continued ground testing and on-orbit experience since the first expedition on the ISS in 2000 provide valuable data and lessons learned in materials selection, applications, and design techniques to increase service life of these ropes. This paper will present a review of the development and failure history of textile and wire ropes for four exercise countermeasure systems-the Treadmill with Vibration Isolation and Stabilization (TVIS) System, Cycle Ergometer with Vibration Isolation and Stabilization (CEVIS) System, Interim Resistive Exercise Device (IRED), and the Advanced Resistive Exercise Device (ARED)-to identify lessons learned in order to improve future systems. These lessons learned, paired with thorough testing on the ground, offer a forward path towards reduced maintenance time and up-mass for future space missions.
Document ID
20160008095
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Svetlik, Randall G. (Jacobs Technology, Inc. Houston, TX, United States)
Moore, Cherice (NASA Johnson Space Center Houston, TX, United States)
Williams, Antony (Jacobs Technology, Inc. Houston, TX, United States)
Date Acquired
June 29, 2016
Publication Date
March 4, 2017
Subject Category
Aerospace Medicine
Report/Patent Number
JSC-CN-36578
Meeting Information
Meeting: 2017 IEEE Aerospace Conference
Location: Big Sky, MT
Country: United States
Start Date: March 4, 2017
End Date: March 11, 2017
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Public Use Permitted.

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