The role of terrain modeling in lunar rover simulation

Article Abstract:

This paper presents work being performed by Boeing on the next generation of lunar rovers as part of the Space Exploration Initiative (SEI). The current work has emphasized development of a lunar rover simulator. Such a simulator will be used for design and analysis of rover mobility system concepts and derivation of requirements for vehicle design and performance. The quality of rover design depends on the fidelity of the models that comprise the simulation tools. One of these models is a lunar terrain model that was developed in the course of work on the rover simulator. This model is the first step in the development of the rover mobility system, which includes the drive, steering, and suspension systems. Mathematically modeling the interaction between the terrain and vehicle requires sound models of the terrain and the vehicle. This paper discusses the role of the lunar terrain model in rover simulation as part of the rover vehicle design process. (Reprinted by permission of the publisher.)

Aircraft, Aircraft parts and equipment, not elsewhere classified, Research, Motor vehicles, Mathematical models, Boeing Co., Navigation, Space Exploration

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Simulation modeling of human behavior in buildings

Article Abstract:

A simulation model (BGRAF) capable of representing the emergency egress behavior of people in fires was developed at the University of Michigan. The software, written in Fortran, can be used to test different hypothesis about human behavior in fires. The cognitive effects of the physical environment were also incorporated into the decision making process simulated in this model. The graphic output animates the actions of the simulated people on a building plan on the screen. Tabular output is also provided. A building data base created by CAEADS computer-aided design software developed at the University of Michigan with partial finding from the U.S. Army Corps of Engineers is accessed by BGRAF during the input phase. The use of a CAD data base to model the physical environment was critical in creating an accurate model, since the actions of the simulated persons hinged upon the limitations of the physical environment. (Reprinted by permission of the publisher.)

Architecture, Computer aided design, Computer aided engineering, Human Factors, Computer-Aided Design, Safety, Facility Construction, Emergencies, Computer-Aided Engineering

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