A square wheel may be the ultimate flat tire. There’s no way it can roll over a flat, smooth road without a sequence of jarring bumps. Equiangular spiral on a sawtooth road. Stan Wagon, a ...
As part of its Ground X-Vehicle Technologies program, DARPA is showcasing some new defense vehicle tech that’s as futuristic as it is practical. One of the innovations, a reconfigurable wheel-track, ...
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