Mobility of an Elastic Glove for Extravehicular Activity Without Prebreathing

Tanaka, Kunihiko; Ikeda, Mizuki; Mochizuki, Yosuke; Katafuchi, Tetsuro

doi:10.3357/asem.3052.2011

Cited by 2 publications

(1 citation statement)

References 6 publications

(7 reference statements)

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“…The compression device comprises a hard wire over the line of the palm and flat plates, which are parted to the right and left on the dorsum of the hand. The parts of the palm and dorsum of the hand are connected by the wire and compress the glove to avoid ballooning [15].…”

Section: Development Of a New Glove For Evamentioning

confidence: 99%

Development and Evaluation of a Glove for Extravehicular Activity Space Suit without Prebreathing

Tanaka¹

2014

J Ergonomics

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The current United States space suit, called an extravehicular mobility unit (EMU), is pressurized with 100% oxygen at 0.29 atm (4.3 psi or 29.6 kPa) in the vacuum of space. This pressure is much lower than that on the earth or in the International Space Station, and prebreathing is required to avoid decompression sickness (DCS). Higher pressure can reduce the risk of DCS, but mobility would be sacrificed due to larger pressure differential between the inside and outside of the suit. To solve the issues regarding mobility, we employed elastic material. If high mobility is acquired, higher pressurization can be employed. Thus, we developed an elastic glove pressurized at 0.65 atm, which is the minimal pressure to avoid decompression sickness without prebreathing.Range of motion with the nonelastic glove at 0.29 atm, which is simulated current EMU, was similar to that of the elastic glove at 0.65 atm. However, the required force evaluated by electromyography during finger flexion using elastic glove at 0.65 atm was smaller than that using the nonelastic glove at 0.29 atm. These results will encourage further development and investigation of a new extravehicular activity suit.

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Section: Development Of a New Glove For Evamentioning

confidence: 99%

Development and Evaluation of a Glove for Extravehicular Activity Space Suit without Prebreathing

Tanaka¹

2014

J Ergonomics

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Decompression and Decompression Sickness

Mahon

Regis

2014

Comprehensive Physiology

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The ever-present desire of humankind to explore new limits introduced us to the syndrome of decompression sickness (DCS). This broad overview of DCS is aimed at its pathophysiology and basics of therapeutic strategies. After a brief explanation of decompression theory, historical vignettes will serve to inform the practical application of our increasing understanding of DCS risks. The pathophysiology, current practices, role of bubble monitoring, risk factors, and potential long-term effects of DCS are also discussed. The goal is to explain the current state of DCS understanding in the context of a robust observational and empirical history. However, DCS remains a syndrome consisting of a constellation of symptoms following a change in ambient pressure. Though great strides have been made, significant knowledge gaps remain. If the coming years advance the field even a fraction of what its predecessors accomplished, the health and safety of those who endeavor in the environment of changing pressures most certainly will be improved.

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Mobility of an Elastic Glove for Extravehicular Activity Without Prebreathing

Abstract: The results suggest that mobility of the elastic glove of 0.65 atm may be better than that of the non-elastic glove of 0.29 atm, similar to that used in the current EVA suit.

Cited by 2 publications

References 6 publications

Development and Evaluation of a Glove for Extravehicular Activity Space Suit without Prebreathing

Development and Evaluation of a Glove for Extravehicular Activity Space Suit without Prebreathing

Decompression and Decompression Sickness

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