The Jet Propulsion Laboratory is developing the Lunar Surface Operations Simulator software package to support analyses for future NASA lunar missions. The package is built on and extended from previous simulation packages developed at JPL. It simulates mechanical motion, soil interaction, environmental, and physical processes. Physical process dynamics include environmental control and life support, thermal, radiation and power transients. An integrated architecture allows use of common models and enables interactions between components operating in different domains to be easily modeled. We describe recent developments and analyses performed to support lunar surface missions and analog field trials.

Abstract. The Lunar Surface Operations Simulator (LSOS) is being developed to support planning and design of space missions to return astronauts to the moon. Vehicles, habitats, dynamic and physical processes and related environment systems are modeled and simulated in LSOS to assist in the visualization and design optimization of systems for lunar surface operations. A parametric analysis tool and a data browser were also implemented to provide an intuitive interface to run multiple simulations and review their results. The simulator and parametric analysis capability are described in this paper.

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Increasingly complex space missions require powerful and flexible simulation environments in order to design, analyze, and operate the missions. NASA's Jet Propulsion Laboratory has created the DSENDS simulation environment that addresses these needs for a wide range of space missions. In this paper, we describe the DSENDS simulation environment and the key architectural components that make DSENDS a useful simulation and analysis framework. We also overview a variety of NASA missions and flight experiments that are using DSENDS.