Awkward question as I want to identify a motion that I know has been tested for being more efficient for producing motion from wind energy by a researcher here locally some years back.
It is what i would describe as a butterfly motion. All I can describe is there is an undulating rhythm your hand makes flipping back and forth in a figure eight when you hold it nonrigidly outside against the air current as you drive.
Can anyone identify the name of that motion so I can google it and see where the research may have lead to in respect to capturing wind energy ? I never see anything on it but knew someone was researching it about 20 years ago near the Oceans Sciences Institute near Saanich, BC