RE: FlyFly BAe Hawk 90mm EDF
Thanks for the warm welcome.
Wow, this kind of blade symmetry is new to me.
I had that fan on my hands when bought the FF F86 but sold it as soon as I got it. I newer took it off the bag...
I'm using Midifans. It sure has blade asymmetry. Have been running it for years and have no reasons to try replace it.
Have you compared the power vs. thrust on both ways of the rotor? I'm still not convinced it will work perfectly that way.
Difference must be small but the concave blade root should ideally rotate on one way only I think.
At least this is what I have been told about lectures concerning gas turbines.
Blade root might benefit having just concave shape since it works more on impulse forces. Blade tip has more rotational speed acts more like a standard prop.
I must be kind of obsessional about the efficiency since I think things like that [sm=50_50.gif]
I have no intentions to argue but I'm just curious.
/Jyri