Search found 3 matches
- Thu Aug 23, 2007 10:19 am
- Forum: Newcomers Briefing Room
- Topic: Circular shrouded blades? Why Not?
- Replies: 5
- Views: 3712
- Thu Aug 23, 2007 9:26 am
- Forum: Newcomers Briefing Room
- Topic: Circular shrouded blades? Why Not?
- Replies: 5
- Views: 3712
Ah, I'd seen them a while back but not noticed that they had the shrouded blades as well as tip driving. Seems dumb that their sizes are off - I guess they need to make their corner drivers smaller. Might be interesting to see a centre-driven fan using it though. As for edge bearings, it would seem ...
- Thu Aug 23, 2007 8:15 am
- Forum: Newcomers Briefing Room
- Topic: Circular shrouded blades? Why Not?
- Replies: 5
- Views: 3712
Circular shrouded blades? Why Not?
I know that fans generate noise at the blade tips, that pressure is reduced by leakage between the blade tips and surround. It occurred to me - why not attach blade ends to a circular shroud and rotate the whole thing? This would remove tip noise altogether (because there aren't any), reduce leakage...