However, the large variability in the results prevents us from identifying a clear trend in the data. 3.2 Unburrowing performance with the radial expansion mechanism For the unburrowing tests, we initially set T supply to 3.5 s and T exhaust to 4.5 s during each expansion-contraction cycle.
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Burrowing and unburrowing in submerged granular media through fluidization and shape-change.
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