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Optimized bioregenerative space diet selection with crew choicePrevious studies on optimization of crew diets have not accounted for choice. A diet selection model with crew choice was developed. Scenario analyses were conducted to assess the feasibility and cost of certain crew preferences, such as preferences for numerous-desserts, high-salt, and high-acceptability foods. For comparison purposes, a no-choice and a random-choice scenario were considered. The model was found to be feasible in terms of food variety and overall costs. The numerous-desserts, high-acceptability, and random-choice scenarios all resulted in feasible solutions costing between 13.2 and 17.3 kg ESM/person-day. Only the high-sodium scenario yielded an infeasible solution. This occurred when the foods highest in salt content were selected for the crew-choice portion of the diet. This infeasibility can be avoided by limiting the total sodium content in the crew-choice portion of the diet. Cost savings were found by reducing food variety in scenarios where the preference bias strongly affected nutritional content.
Document ID
20040087472
Document Type
Reprint (Version printed in journal)
Authors
Vicens, Carrie (School of Operations Research and Industrial Engineering, Cornell University Ithaca, NY 14853, United States)
Wang, Carolyn
Olabi, Ammar
Jackson, Peter
Hunter, Jean
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Habitation (Elmsford, N.Y.)
Volume: 9
Issue: 2-Jan
ISSN: 1542-9660
Subject Category
Man/System Technology and Life Support
Funding Number(s)
CONTRACT_GRANT: NAG5-4222
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Life Support Systems