Dormancy effects on the reliability of nuclear thermal propulsion systems for long-term manned space missions

1993 ◽  
Author(s):  
Martin L. Shooman ◽  
Pasquale M. Sforza
Keyword(s):  
Space Missions ◽  
Propulsion Systems ◽  
Manned Space ◽  
Manned Space Missions

scholarly journals LABORATORY BIODEGRADATION OF POTENTIAL CELLULOSE WASTES GENERATED DURING LONG-TERM MANNED SPACE MISSIONS

2019 ◽  
pp. 71-78 ◽  
Author(s):  
Hristo Najdenski ◽  
Viacheslav Ilyin ◽  
Plamen Angelov ◽  
Venelin Hubenov ◽  
Denis Korshunov ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Anaerobic Bacteria ◽  
Space Missions ◽  
Microbial Consortia ◽  
Microbial Biodegradation ◽  
Thermophilic Conditions ◽  
Dividing Cells ◽  
Manned Space ◽  
Manned Space Missions

Anaerobic microbial biodegradation of cellulose containing wastes generated during the long-term manned space missions is a key technological approach for resolving the problem of wastes accumulated onboard of the spacecraft. Herewith are presented data on the possibilities of structurally stable multispecies microbial consortia originating from methanogenic bioreactors to decompose different cellulose substrates – filter paper, medical gauze and vegetable mix as potential cellulose wastes during space missions. The rates of biodegradation processes carried out at mesophilic and thermophilic conditions are not only measured and compared but are providing new opportunities for development of technology for microbial biodegradation of cellulose-rich organic wastes. Moreover, the studies have shown that paper and gauze hydrolysis with the help of cellulolytic bacterial communities can be an effective component of utilization of cosmonaut hygiene items. Biodegradation of plant wastes by community of anaerobic bacteria is promising and applicable tool also under terrestrial conditions. Light microscopy of bacterial communities reveals the presence of Gram-positive spore forming bacilli (short and long forms, bipolar and dividing cells) and typical clostridia forms.

Psychological countermeasures in manned space missions: “EARTH” system for the Mars-500 project

2016 ◽  
Vol 55 ◽  
pp. 898-908 ◽  
Author(s):  
Cristina Botella ◽  
Rosa M. Baños ◽  
Ernestina Etchemendy ◽  
Azucena García-Palacios ◽  
Mariano Alcañiz
Keyword(s):  
Space Missions ◽  
Earth System ◽  
Manned Space ◽  
Manned Space Missions
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