Technical Paper
The Use of Different Biological Objects in Long-Term Space Flights
1997-07-01
972300
Life-support systems at modern spacecrafts are based on the reserves of different components and their partial physical and chemical regeneration. This permits cosmonauts to stay for a long time under space flight conditions (Valery Polyakov - 1 year and 4 months). At the same time, in many countries works are in progress on the creation of closed ecological life-support systems involving the use of biological objects of different phylogenetic levels (Mashinsky and Nechitailo, 1996). In the known ground-based ecological systems one to several thousands of biological species are used to support the human life functions. For instance, only Chlorella was used in the first 1-day experiment in Moscow in a closed biological system with the participation of a man, while in the two-year experiment in the Bioshere-2 complex in Arizona more than 4000 species were used (Alling and Nelson, 1993).
