Optimized bioregenerative space diet selection with crew choice

Vicens, Carrie; Wang, Carolyn; Olabi, Ammar; Jackson, Peter; Hunter, Jean

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NASA NTRS · 20040087472

Optimized bioregenerative space diet selection with crew choice

Vicens, Carrie·Wang, Carolyn·Olabi, Ammar·Jackson, Peter·Hunter, Jean

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Abstract

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.

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Non-NASA Center NASA Discipline Life Support Systems Menu Planning Space Flight/economics Food Preferences Choice Behavior Models, Theoretical Diet Astronauts Mars Food, Formulated Support, Non-U.S. Gov't Sodium, Dietary Human Nutritional Requirements Support, U.S. Gov't, Non-P.H.S Life Support Systems Ecological Systems, Closed

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Vicens, Carrie, Wang, Carolyn, Olabi, Ammar, Jackson, Peter, Hunter, Jean. 2003-01-01. Optimized bioregenerative space diet selection with crew choice. https://ntrs.nasa.gov/citations/20040087472

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