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I've oftened wonded why there is no ring or hoop connecting the blade tips of conventional fan and propellers. It seem to me that it would add strength. Perhaps the extra mass and the moment of energy would just be to great and offset any possible advantages.
My ideawould mostly be applied to ducted propellers and fans, to help narrow up the clearances and improve efficiency - by reducing blade tip vortices.
It seems this new propeller does that and more.
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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
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