A system was created for sand traction performance testing of tire prototypes for extraterrestrial use by NASA. The system consists of a suspended sand-filled trough that rotates when driven by the prototype. Sensors are used to determine traction slippage of prototypes, providing a quantitative measure of relative prototype performance. This paper describes system improvements to better simulate extraterrestrial environments and more accurately measure prototype performance. A tire prototype hard stop was designed and built to prevent damage associated with the tire assembly resting in the trough. A rock obstacle was created to simulate rough terrain. A sensor system was designed to more accurately determine tire velocity. Various concepts were developed and prototyped to groom the sand during testing. Computational hardware and software upgrades were made to better facilitate the data acquisition processes. An instructional video was created to explain operational procedures. The sensor system will be integrated with the software and a sand grooming concept will be implemented.

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