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Artificial gravity: how much, how often, how long?
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Vernikos, J. Burton, R. |
| Copyright Year | 1992 |
| Description | The argument is not overwhelming for the need to provide a continuous 1G environment using tethers or other means of spinning a spacecraft in order to maintain crew health in planetary exploration. Even on Earth, we spend a maximum of 16 hours in 1G (upright). Sporadic evidence over the years has suggested that somewhere between 30-minutes and 4-hours of 1G may suffice to prevent the deconditioning effects of bedrest (orthostatic intolerance and the rise in calcium excretion). However, it is not known what the minimum requirements are, whether they vary for different physiological systems and whether passive zero gravity or the enhancement of the effects of activity conducted in an increased G field are more effective. It is similarly not known what the optimal duration and frequency of the G stimulus is, and how time of day might alter its effectiveness. Since acceleration level and duration appear to be physiologically interactive, it seems feasible to hypothesize that periodic acceleration exposures to greater than 1G levels provided by some on-board centrifuge, would suffice and should be explored. |
| File Size | 169891 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950010363 |
| Archival Resource Key | ark:/13960/t4xh4hp80 |
| Language | English |
| Publisher Date | 1992-05-14 |
| Access Restriction | Open |
| Subject Keyword | Man/system Technology And Life Support Circadian Rhythms Deconditioning Gravitational Physiology Aerospace Environments Health Aerospace Medicine Exposure Weightlessness Tetherlines Centrifuges Bed Rest Long Duration Space Flight Spacecrews Space Exploration Microgravity Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
