Winglets and super critical wings...
As far as I know, the reason the 777 doesn't have winglets is becuase it has a super critical wing.
Now correct me if I'm wrong, but aren't winglets there to reduce induced drag at slow speeds and high angles of attack...
And aren't super critical wing sections employed to delay Mcdr during high speed cruise...
Well, one design feature is for slow speed flight, the other for fast. As far as I know...
You can't really trade one for the other.
So, have I missed something, or am I simply wrong???