Event

Design Evaluation of a Four-Wheel Rover: Nominal Motor Ratings Insufficient to Demonstrate 8 km/h Compliance

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Sabik Bin Sultan and co-authors submitted a paper presenting an integrated, reproducible design evaluation of a four-wheel educational rover aimed at the high school remote-controlled division of the 2027 NASA Human Exploration Rover Challenge. Based on an estimated mass of 10.919 kg and 215 mm wheels rotating at 200 RPM, the theoretical rolling speed is calculated as 8.105 km/h; the authors accordingly state that the nominal parameters on the motor nameplate are insufficient to demonstrate that the vehicle meets the 8 km/h design limit. Under the assumptions of a rolling resistance coefficient of 0.10 and equal torque distribution among the wheels, the authors calculate that at least 1.255 N·m per wheel is required to climb a 20-degree slope at constant speed. On the software side, the study compares color-geometric rules with two linear support vector machines on 2400 generated board crop images, using an evaluation scheme with non-overlapping scenes. The authors state that these software results and the analytical sensitivity analysis support a testable development plan, but the study did not report physical vehicle tests.