Originally Posted by
FullOppositeRudder
Taken at ADL RW 05 about a week ago - a significant cross wind (left to right) was active. Do the scimitar winglets on the 737 MAX series make things more interesting in this situation?
https://www.youtube.com/watch?v=pV6JhHnh3D8
Any landing that... what, you want to reuse the plane? Really?...
lads got close to a pod scrape, a slightly lower attitude and it would be a lot more expensive than mere apologies at the MCD on deplane.
The rudder/yaw/roll lag is in play, so yeah, there is a bit of a driver-machine phase lag thingy going on. This would be an example where the MIL-HDBK-1797A PIO term would be better replaced by aircraft-pilot coupling, the phase ;ag ends up being damped by Mother Earth before it really gets going.
The scimitar winglet reduces wing tip clearance, but those are pretty healthy margins to start with, getting out of sorts to the point that they are "exciting" [ a term that has been used to describe performance along with "sporty"]. Winglets do 1 main thing and 3 other add ons. They act to effectively increase aspect ratio, the rest of the stuff on tip vortices follows that basic point. They do that without increasing substantially the wings root bending moment. If you can design the wing for the higher aspect ratio, you are better with a tip extension over the winglet, but they sure look moddiny. [the B744 performance change for flight without a winglet was 0.0% change...] winglets lower the flutter boundary of a wing generally, and that takes more structure to recover... winglets usually reduce aileron authority slightly, and usually will reduce x-wind limit slightly. Mainly, they look pretty, and if the wing could have taken the tip extension, that would be the better use of tin. They do alter lateral directional stability, but not so much, if you had a dutch roll deal before that will become more interesting usually.