Manufacturer - Festo AG & Co. KG
festo.com/net/SupportPortal/Files/42062/Aqua_ray_en.pdf
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Uploaded on Nov 16, 2010
Quote:
Manta ray driven by water hydraulics
The central drive and control unit for the wing and tail takes the form of a fluidic muscle from Festo, in combination with the Fin Ray Effect®.