Aggregate System Level Material Analysis for Advanced Life Support Systems

Abstract

In this paper, an aggregate system level modeling and analysis framework is proposed to facilitate the integration and design of advanced life support systems (ALSS). As in process design, the goal is to choose values for the degrees of freedom that achieve the best overall ALSS behavior without violating any system constraints. At the most fundamental level, this effort will identify the constraints and degrees of freedom associated with each subsystem and provide estimates of the system behavior and interactions involved in ALSS. This work is intended to be a starting point for developing insights into ALSS from a systems engineering point of view. At this level, simple aggregate static input/output mapping subsystem models from existing data and the NASA ALS BVAD document are used to debug the model and demonstrate feasibility. Table 1. Entity and component list Entity Components Carbon dioxide Carbon Dioxide Edible Food Dry edible mass (DEM), Water Human Waste Dry solid waste (DSW), Water, Brine Non-edible Stuff Dry non-edible mass (DNEM), Water Oxygen Oxygen Raw Food DEM, DNEM, Water Waste DSW, Water, Brine Water Water Meal DEM, Water completely based on a mission scenario without leaving out any degrees of freedom. This also requires technologies to be specified in order to be able to complete the study.

Application of Supply Chain Optimization and Protocol Environment Architecture to ALS Modeling and Visualization of a Mars Surface Habitat

“…For Mars Surface Habitats, in particular, one issue that is not usually considered is that of habitat evolution between missions. This is understandable given the complexity of advanced life support systems (Aydogan et al, 2003) because adding in the concept of designing a habitat of a 15 to 30 year lifespan adds an additional layer of complexity. In this paper we detail a simulation tool that was developed to simulate a Mars Surface Habitat rapidly.…”