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Space ecosynthesis: An approach to the design of closed ecosystems for use in spaceThe use of closed ecological systems for the regeneration of wastes, air, and water is discussed. It is concluded that such systems, if they are to be used for the support of humans in space, will require extensive mechanical and physico-chemical support. The reason for this is that the buffering capacity available in small systems is inadequate, and that natural biological and physical regulatory mechanisms rapidly become inoperative. It is proposed that mathematical models of the dynamics of a closed ecological system may provide the best means of studying the initial problems of ecosystem closure. A conceptual and mathematical model of a closed ecosystem is described which treats the biological components as a farm, calculates the rates of flow of elements through the system by mass-balance techniques and control theory postulates, and can evaluate the requirements for mechanical buffering activities. It is suggested that study of the closure of ecosystems can significantly aid in the establishment of general principles of ecological systems.
Document ID
19780018797
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Macelroy, R. D.
(NASA Ames Research Center Moffett Field, CA, United States)
Averner, M. M.
(California Univ. at Berkeley)
Date Acquired
September 3, 2013
Publication Date
June 1, 1978
Subject Category
Man/System Technology And Life Support
Report/Patent Number
NASA-TM-78491
Accession Number
78N26740
Funding Number(s)
PROJECT: RTOP 192-55-69
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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