Optimized bioregenerative space diet selection with crew choice.
Previous 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.
Vicens
Carrie
C
School of Operations Research and Industrial Engineering, Cornell University, Ithaca, NY 14853, USA.
Wang
Carolyn
C
Olabi
Ammar
A
Jackson
Peter
P
Hunter
Jean
J
D018480:Astronauts; D002755:Choice Behavior; D004032:Diet; D018504:Ecological Systems, Closed; D005518:Food Preferences; D005526:Food, Formulated; D006801:Humans; D008021:Life Support Systems; D018535:Mars; D008612:Menu Planning; D008962:Models, Theoretical; D009751:Nutritional Requirements; D012982:Sodium, Dietary; D013026:Space Flight / Q000191:economics*
D012982:Sodium, Dietary