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Old 06-13-2017, 09:37 AM   #25 (permalink)
kach22i
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Bumping this old thread, can we call this trickle down technology or just marketing?


https://www.ruppams.com/CatalogConte...VLS/HVLSRA.asp

Quote:
Tubercle Advantage

Offering stall angles as high as 22*degrees

Reduces number of fan blades needed versus conventional*airfoils

Noise reduction by eliminating tip*stalling

Lowers vibration and leads to less wear and tear on the blades and drive*train
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