That's an intelligent choice for a fan blade alternative ! There's actually some serious engineering that goes into this type, including the OEM.
Blade pitch, camber, chord, number of blades and in the case of the OEM, an interesting asymmetry of the blades relative to each other, which I suspect is to minimalize blade/air noise.
1980 KZ 1300 sr# KZT30A-009997
Always High - Know Fear !
Here's my tease for today-
If had the time, Just for shits and giggles, I'd go with bladeless technology i.e. ala Dyson technology. Now THAT would be a head turner. Who's up to develop that??
Maybe I should just add it to the list??