2010
Silent Helicopter Blades
https://www.trendhunter.com/trends/blue-edge
Quote:
Cutting down on the 'blade-vortex interaction' that causes the loudness of helicopters today, Blue Edge works with another technology called Blue Pulse to combat that phenomenon.
According to Gizmodo, by adding 3 flaps to the edge of the Blue Edge blade, they "move up and down at 15 to 40 times per second, using piezoelectric motors that also help to reduce the blade-vortex interaction."
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1977 911S Targa 2.7L (CIS) Silver/Black
2012 Infiniti G37X Coupe (AWD) 3.7L Black on Black
1989 modified Scat II HP Hovercraft
George, Architect
Last edited by kach22i; 09-12-2017 at 02:15 PM..
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