Paul,
Is there a readily available reference for Coanda design? Or are the particular radius and curve proportions non-critical?
Some of the old patents have detailed the coanda effect with numbers, example:
http://www.google.com/patents/about?id=Cp18AAAAEBAJ&dq=3984054
This is a very informative thread and has me looking at my Europa cowl again! I think I understand the Coanda Nozzle but I'm trying to understand the variable outlets that Paul has on them. Since the exhaust flow is there too, it's not clear how to make a variable outlet that still allows the exhaust to exit. Photos or explanation would be appreciated.
Thanks
Jim Butcher
Europa XS N241BW
If you'd like to see a commercial application of the Coanda effect, go to www.dyson.com and see their new Dyson Fan!
very cool...!