Scientific Uses and Technical Implementation of a Variable Gravity Centrifuge on Space Station Freedom

901360

07/01/1990

Event
International Conference On Environmental Systems
Authors Abstract
Content
The evolutionary history of life on Earth has occurred under the omnipresent influence of a gravitational force. The exposure to the microgravity environment of space produces an array of biochemical and physiological changes in plants and animals. These changes extend from the cellular to the whole organism level. In order to manipulate gravity as an experimental variable and to separate the effects of weightlessness from the other variables in spaceflight, it is essential to provide a source of gravity in space. The scientific user community was consulted on the potential need and science requirements for a centrifuge to be designed for and flown on Space Station Freedom. Scientific purposes identified for the centrifuge were to: 1) provide a means of conducting fundamental studies in which gravity is a variable under experimental control, 2) provide a 1 -g control, 3) determine the threshold value of gravitation force for physiological response, 4) provide a source of 1 -g conditioned specimens that are also adapted to the spacecraft environment, and 5) determine the effects of intermittent hypergravity. Science requirements were generated which specified the largest possible diameter (approx. 2.5 meter), gravity levels ranging from 0.01 to 2 g, a nominal ramp-up rate of 0.01 g/sec, and life support for plants and animals. Based on the science requirements, a design concept for a centrifuge was developed at Ames Research Center. The use of artificial gravity in the microgravity environment of space will lead to an understanding of the importance of Earth gravity on living systems and the physiological adaptation to other levels of gravity.
Meta TagsDetails
DOI
https://doi.org/10.4271/901360
Pages
12
Citation
Johnson, C., and Hargens, A., "Scientific Uses and Technical Implementation of a Variable Gravity Centrifuge on Space Station Freedom," SAE Technical Paper 901360, 1990, https://doi.org/10.4271/901360.
Additional Details
Publisher
Published
Jul 1, 1990
Product Code
901360
Content Type
Technical Paper
Language
English