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Advanced Technology for Human Support in Space (1997)
Commission on Engineering and Technical Systems (CETS)

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. "4 EXTRAVEHICULAR ACTIVITY SYSTEMS." Advanced Technology for Human Support in Space. Washington, DC: The National Academies Press, 1997.

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TABLE 4-2 Current Revolutionary (or Lunar/Mars) Technology Projects

Project Description

Funding level (in $k) in FY96

FY the project would be completed if funded

Total funding ($k) necessary to complete project

Planetary dust protection

0

97

50

Mars thermal protection

0

97

75

Planetary mobility of ISS and Mark III suits

0

98

200

Ionization removal of CO2 and H2O

0

99

200

Microencapsulated materials for cooling

0

99

200

Metal hydride thermal control system

80

96

516

Variable conductance heat rejection

0

99

300

Increased thermoelectric module efficiency

0

97

10

Convection/radiation radiator for Mars

0

00

400

Lightweight fuel cell

0

98

300

Minimum mass and volume airlock

0

97

40

Liquid oxygen PLSS

0

98

500

Variable pressure O2 regulator

0

00

500

Carbon fullerene O2 storage

0

99

250

Mars atmospheric pressure analysis

0

97

40

Totals

80

 

3,581

Recommendation 4-1. Improvements in areas where current technologies can meet mission requirements should be given lower priority. The emphasis should be placed on developing techniques that have the potential to make large improvements. In general, in the absence of a requirement for a new extravehicular mobility unit, the first priority of research and development should include the development of components and subsystems. The second priority should be systems integration, testing, and the packaging of technologies in prototypes. Specific high priorities for extravehicular activity research and development include (not in rank order):

  • achieving zero prebreathe capability
  • reducing the total mass of extravehicular mobility units
  • minimizing consumables through advanced subsystem designs (thermal control, CO2 removal, humidity control)
  • enabling adequate mobility on planetary surfaces
  • protecting against dust contamination
  • designing to fit multiple crewmembers
  • increasing reliability and maintainability of extravehicular mobility units (e.g., possibly by using modular components and subsystems)
  • improving gloves and end-effectors
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