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Human Exploration of Space A Review of NASA's 90-Day Study and Alternatives (1990) / Chapter Skim
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III. Other Critical Technologies for the Human Exploration Initiative
Pages 17-20

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From page 17...
... THE NASA 90-DAY STUDY The Technology Assessment section (Chapter 8) of the 90-lDay Study lists seven technologies (regenerative life support systems, aerobraking, advanced space engine, surface nuclear power, in-situ resource utilization, radiation protection, and nuclear thermal rocket propulsion)
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From page 18...
... Such a facility should permit research on human physiological Reconditioning and countermeasures, including different artificial gravity radii and rotation rates, in order to determine the optimal combination of gravity levels and exposure times. Because of time considerations in human Reconditioning phenomena, an operational research period lasting two to six years must be anticipated before definitive answers about artificial gravity can be expected.
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From page 19...
... NASA presentations based on the 90Day Study implicitly recognize this by grouping operations in functional categories. Systems that integrate automation and robotics with humans permeate the arenas of vehicle maneuvering; vehicle servicing in space; in-space and surface assembly and construction; planetary rovers; surface operations; extravehicular activity and exploration; sample acquisition, analysis, and preservation; and scientific probes and penetrators.
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From page 20...
... In many cases the basic research has barely begun. make the HEI possible, the research foundation will have to be laid in the areas listed in the NASA report and in such fields as artificial gravity, more capable information systems, and human/machine systems.
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Key Terms

  • critical technologies
  • human performance
  • nuclear thermal
  • thermal rocket
  • resource utilization

  • rocket propulsion
  • provide artificial
  • space station
  • human role
  • life support

  • definitive answers
  • surface operations
  • optimal combination
  • simpler countermeasures
  • capable information

  • gravity investigations
  • planetary rovers
  • technology research
  • vehicle servicing
  • human surrogates

  • exposure times
  • study recognizes
  • period lasting
  • research strategy
  • minimizing human

  • scientific probes
  • focused research
  • radiation protection
  • physiological reconditioning
  • gravity environment


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