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Study Finds Smooth Wings Outperform Corrugation for Grasshopper-Inspired Robot Gliders

CT-based 3D replicas let researchers identify aerodynamic–structural trade-offs to guide stowable, low-power insect-scale designs.

Overview

  • The peer-reviewed paper was published Jan. 7 in the Journal of the Royal Society Interface by a Princeton–University of Illinois team.
  • Researchers focused on the American grasshopper’s hindwing, using high-resolution CT scans to produce 3D-printable variants that isolated shape, camber, and corrugation.
  • Water-channel testing and motion-capture flight experiments showed the synthetic gliders performed on par with real grasshoppers by the team’s benchmarks.
  • Smooth wing geometries delivered the most efficient and repeatable glides, indicating natural corrugation likely supports folding or steep-angle maneuvers rather than peak glide efficiency.
  • Next steps target wing deployment from a stowed state without heavy motors to pair gliding with jumping for longer, untethered multimodal operation.