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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Electrolyte and design studies in development of combined carbon dioxide removal and reduction system for space cabin atmosphere
Hazard of bends following rapid decompression after prolonged exposure to oxygen-nitrogen cabin atmosphere
Contaminant removal evaluation from cabin atmosphere of Apollo spacecraft
Oxygen regeneration from solid electrolytic reduction of carbon dioxide for space cabin atmosphere
Use of chain conditioned motor reflex methods on animals for studying effects of long exposure to simulated space cabin atmosphere
Carbonation Cell System for removing carbon dioxide from space cabin atmosphere using electrochemical process
Oxygen regeneration from solid electrolytic reduction of carbon dioxide for space cabin atmosphere
The volatile organic components in the spacecraft cabin atmosphere of Skylab 4 were trapped on a solid adsorbent at various times during the mission. In post-flight analyses, more than 300 compounds in concentrations from less than 1 ppb up to 8000 ppb could be detected by high-resolution gas chromatography. In the samples of the 11th, 47th, and 77th day of the mission, approximately 100 components in the molecular weight range from 58 to 592 were identified by mass spectrometry. Besides components known from other environments, such as alkanes, alkenes, and alkylated aromatic hydrocarbons, components typical of the human metabolism, such as ketones and alcohols, were found. Other typical components in the spacecraft atmosphere included fluorocarbons and various silicone compounds, mostly normal and cyclic methylsiloxanes.
High density metallic superoxide microcontactor for air revitalization oxygen source in sealed cabin atmosphere
Feasibility of removing metabolic carbon dioxide and water from space cabin atmosphere by low temperature freezeout process
Electrochemical carbon dioxide concentration system for purifying space cabin atmosphere
Human ecology in space flight - cabin atmosphere, biological chemical regenerative systems, gravity and acceleration, and space radiation
An atmosphere exchange system (AES) has been designed to provide a conditioned atmosphere supply to plant specimens in flight without incurring the large weight and volume associated with bottled gases. The paper examines the atmosphere filter cartridge (AFC) designed to remove trace organic atmosphere contaminants from the Space Shuttle cabin and to condition the cabin atmosphere prior to exposure to plant specimens. The AES and AFC are described and illustrated. The AFC design requirements are discussed and results are presented from tests on the performance of the AFC. Also, consideration is given to the potential applications of the AFC and future design concepts for atmosphere control.
Method for physical recovery of carbon dioxide from space cabin atmosphere and chemical recovery of metabolic oxygen
Cabin atmosphere control for extended manned space flight
Space cabin atmosphere relation to environmental and operational variables, discussing effect of hypoxia and hypercapnia on spacecrew and mission safety
Effect of pressure suit ventilating airflow on human water requirements in spacecraft cabin atmosphere
The paper describes a technology development program whose goal is to develop water vapor electrolysis (WVE) hardware that can be used selectively as localized topping capability in areas of high metabolic activity without oversizing the central air revitalization system on long-duration manned space missions. The WVE will be used primarily to generate O2 for the crew cabin but also to provide partial humidity control by removing water vapor from the cabin atmosphere. The electrochemically based WVE interfaces with cabin air which is controlled in the following ranges: dry bulb temperature of 292 to 300 K; dew point temperature of 278 to 289 K; relative humidity of 25 to 75 percent; and pressure of 101 + or - 1.4 kPa. Design requirements, construction details, and results for both single-cell and multicell module testing are presented, and the preliminary sizing of a multiperson subsystem is discussed.