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A comment on Toroidal propeller allows a drone to operate more quietly [pdf]. Parent comment

Re:Toroidal propeller allows a drone to operate more quietly... by dylan604 on Sunday January 29, 2023 @06:33PM (#34573950)
One ping only though
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Re:Toroidal propeller allows a drone to operate more quietly... by donw on Sunday January 29, 2023 @10:33PM (#34575488)
I would have liked to see Montana.
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