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  • 1
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    Advanced regenerative environmental control and life support systems - Air and water regeneration (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Extended manned space missions will require regenerative life support techniques. Past U.S. manned missions used nonregenerative expendables, except for a molecular sieve-based carbon dioxide removal system aboard Skylab. The resupply penalties associated with expandables becomes prohibitive as crew size and mission duration increase. The U.S. Space Station, scheduled to be operational in the 1990's, is based on a crew of four to sixteen and a resupply period of 90 days or greater. It will be the first major spacecraft to employ regenerable techniques for life support. The paper uses the requirements for the Space Station to address these techniques.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: Advances in Space Research (ISSN 0273-1177); 4; 12, 1; 279-288
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Advanced Regenerative Environmental Control and Life Support Systems: Air and Water Regeneration (1985)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Extended manned space missions will require regenerative life support techniques. Past manned missions used nonregenerative expendables, except for a molecular sieve based carbon dioxide removal system aboard Skylab. The resupply penalties associated with expendables becomes prohibitive as crew size and mission duration increase. The Space Station scheduled to be operational in the 1990's is based on a crew of four to sixteen and a resupply period of 90 days or greater. It will be the first major spacecraft to employ regenerable techniques for life support. The techniques to be used in the requirements for the space station are addressed.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: Controlled Ecol. Life Support System; p 29-38
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Other Challenges in the Development of the Orbiter Environmental Control Hardware (1985)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Development of the Space Shuttle orbiter environmental control and life support system (ECLSS) included the identification and resolution of several interesting problems in several systems. Some of these problems occurred late in the program, including the flight phase. Problems and solutions related to the ammonia boiler system (ABS), smoke detector, water/hydrogen separator, and waste collector system (WCS) are addressed.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA. Johnson Space Center Space Shuttle Tech. Conf., Pt. 1; p 465-479
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Utilizing the Li-Cl sub 2 power plant for critical weapons applications. (1966)
    In:  Other Sources
    Details
    Publication Date: 2018-12-01
    Description: Lithium chloride power plant theory and technology, noting application to critical weapons systems
    Keywords: AUXILIARY SYSTEMS
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Fault diagnostic instrumentation design for environmental control and life support systems (1979)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: As a development phase moves toward flight hardware, the system availability becomes an important design aspect which requires high reliability and maintainability. As part of continous development efforts, a program to evaluate, design, and demonstrate advanced instrumentation fault diagnostics was successfully completed. Fault tolerance designs for reliability and other instrumenation capabilities to increase maintainability were evaluated and studied.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-152309 , LSI-TR-361-5
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Fractional capacity electrolyzer development for CO2 and H2O electrolysis (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The electrolyzer module was designed to produce 0.24 kg/d (0.53 lb/d) of breathable oxygen from the electrolysis of metabolic carbon dioxide and water vapor. The fractional capacity electrolyzer module is constructed from three electrochemical tube cells and contains only three critical seals. The module design illustrated an 84 percent reduction in the total number of seals for a one person capacity oxygen generating system based on the solid electrolyte carbon dioxide and water vapor electrolysis concept. The electrolyzer module was successfully endurance tested for 71 days.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-166149 , LSI-TR-341-4
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Environmental control and life support technologies for advanced manned space missions (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Regenerative environmental control and life support system (ECLSS) technologies are found by the present evaluation to have reached a degree of maturity that recommends their application to long duration manned missions. The missions for which regenerative ECLSSs are attractive in virtue of the need to avoid expendables and resupply requirements have been identified as that of the long duration LEO Space Station, long duration stays at GEO, a permanently manned lunar base (or colony), manned platforms located at the earth-moon libration points L4 or L5, a Mars mission, deep space exploration, and asteroid exploration. A comparison is made between nonregenerative and regenerative ECLSSs in the cases of 10 essential functions.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: SAE PAPER 860994
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Prototype Bosch CO2 reduction subsystem for the RLSE experiment (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Requirements for the Bosch carbon dioxide reduction subsystem were established in a study of regenerative life support evaluation experiments. A detailed design is presented including a schematic, components list and characteristics, requirements summaries, and complete definition of life systems' advanced control/monitor instrumentation applied to the Bosch subsystem. Design information needed to proceed with the final design and fabrication of a preprototype system is presented.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-150504 , LSI-ER-332-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Iodine generator for reclaimed water purification (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The system disclosed is for controlling the iodine level in a water supply in a spacecraft. It includes an iodine accumulator which stores crystalline iodine, an electrochemical valve to control the input of iodine to the drinking water and an iodine dispenser. A pump dispenses fluid through the iodine dispenser and an iodine sensor to a potable water tank storage. The iodine sensor electronically detects the iodine level in the water, and through electronic means, produces a correction current control. The correction current control operates the electro-chemical iodine valve to release iodine from the iodine accumulator into the iodine dispenser.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Format: application/pdf
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  • 10
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    One-man, self-contained CO2 concentrating system (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A program to design, fabricate, and test a 1-man, self-contained, electrochemical CO2 concentrating system is described. The system was designed with electronic controls and instrumentation to regulate performance, to analyze and display performance trends, and to detect and isolate faults. Ground support accessories were included to provide power, fluids, and a Parametric Data Display allowing real time indication of operating status in engineering units.
    Keywords: BIOTECHNOLOGY
    Type: NASA-CR-114426 , LSI-ER-131-16
    Format: application/pdf
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