Quote:
Originally Posted by SmileyEH
I don't know what the winds were for this landing, but it didn't look like he had the plane's nose pointed down the runway at touchdown (it was off at an angle). Good crosswind technique will have the plane's longitudinal axis pointing straight down the runway. This requires cross controls (opposite rudder and aileron).
Coming down final approach, with normal controls, it will be necessary to have the airplane's nose pointed into the wind. If you didn't do this, the plane would drift downwind of the extended runway centerline. Having the nose pointed in to the wind is fine when you're in the air, but you can't land this way because it puts tremendous side loads on the landing gear. (exception: the Air Force C5, which my brother flew, has main landing gear wheel trucks that can actually be oriented so that even though the plane lands with the nose right or left of centerline, the wheels are oriented so they point down the runway and in the direction of the airplane's movement; this eliminates the side load problem and the airplane actually lands slightly sideways).
To avoid landing in a crab (the term used for having a compensating angle from the centerline), a transition must be made so that the nose points down the runway. But if you simply turn the nose that way, the airplane will again drift downwind and you will still have side loads on the wheels when you touch.
So we use the rudder to bring the nose back to runway alignment and then, to counteract the downwind drift, we increase the aileron into the wind. With a right crosswind, you will have left rudder and right aileron (cross controls). The right wing will actually be slightly down. So a properly executed crosswind landing will touch down first on the upwind main landing gear and then the pilot will ease down the downwind main gear and the nosewheel.
The higher the crosswind, the more cross control is needed and the more noticeable will be the wing down landing. With very long wings, this could ultimately result in a wingtip strike. For that reason, there are limits on how strong the crosswind can be for a given aircraft. In the 767 it's 29 kts. If we're landing on Runway 27 and the wind is out of the North at 30 kts, we're not going to land. We'll go find another place with the runway aligned closer to the wind.
A properly executed landing in a strong crosswind requires good pilot skills and is very satisfying. The irony is that passengers usually think the pilot screwed up because the plane was not level at touchdown.
Last edited by W0X0F; 06-18-2014 at 08:21 PM.