(HP-67) Breakeven Calculations

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Two programs from CELSS Scenario Analysis: BreakevenCalculations, CELSS, NASA-CR-166319, MAY 1982.

TABLE OF CONTENTS
EXAMPLE CALCULATIONS
Breakeven Calculation Procedure and Results
APPENDIX C. HP-67 PROGRAM FOR CULTIVAR CALCULATIONS
APPENDIX D. HP-67 PROGRAM FOR BREAKEVEN CALCULATION

INTRODUCTION
PURPOSE
This report summarizes the results of effort aimed toward the development of a rudimentary model that illustrates the relative mass requirements of food production components in a controlled ecology life support system (CELSS) based on regenerative concepts. The report is intended as a working paper which can provide a basis for further model development and analysis.
The model and analytic results can be useful for developing an understanding of the mass requirements for food production in a CELSS and how these requirements compare with food resupply requirements. Such an understanding aids in making knowledgeable decisions about research investment options in regenerative life support. More importantly, the documentation of the model and results reveals gaps in knowledge and thereby provides guidance for improving the model and the analysis procedures.

BEST!
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