NASA NTRS · 19900024036
Determining a bends-preventing pressure for a space suit
Abstract
Research conducted to determine the proper pressure for preventing bends during EVA without preoxygenation is examined. Male and female subjects with different breathing gas mixtures and pressures are studied in order to define the pressure. Visual and auditory Doppler ultrasonic signals are utilized to monitor intravascular gas bubbles. The workload, which simulates EVA, consists of a handturned bicycle ergometer, a torque wrench operation, and a rope pull. The experimental data reveal that the minimum space suit pressure needed to prevent decompression sickness is 9.5 psi.
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Krutz, R. W., Jr., Webb, J. T., Dixon, G. A.. 1989-01-01. Determining a bends-preventing pressure for a space suit. https://ntrs.nasa.gov/citations/19900024036
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