Quote:
Originally Posted by Ryan Coke
No, differential thrust is not used in a cross wind landing, it serves no purpose in that case. Typically the autothrottles are off below 100' and the flying pilot is running the thrust, so they can make rapid changes if needed during the flare.
As for types of x-wind landing techniques q-scout, they have basically been covered here; slip (most common), last second kick, crab on, and combination technique (some slip, some crab). You don't use different techniques at different airports specifically, but based on different aircraft and conditions.
A canadair rj has low wing tips, so very little bank can be in or else they will strike the runway. So last second kick is more common on that.
The 737 can do slip up to approx. 20 kts of direct x wind ( depending on flap setting ) before there is a risk of contact wing tips, engine fairings, or flap track fairings.
On a dry runway landing crab on is more uncomfortable as it straightens out more aggressively. On a wet runway it is quite comfortable as it straightens out more slowly.
On a low visibility approach, landing crab on is more desirable as inputting slip is destabilizing (as you bank you change the lift vector, the slip increases drag, all as you are flaring in unstable air).
My point is there are several issues that are weighed when deciding what technique to use. Having said that, most of the time in average winds it is a slip that will be used on most aircraft, and certainly on 737s.
I hope that all wasn't too confusing, just trying to illustrate some of the factors that we are considering when landing.
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New to this thread so fata alert but is anyone else concerned that Ryan Coke is a commercial pilot? Not sure the user name inspires a bunch of confidence.
Also, jus had an equally disturbing thought, none of those cockpit computers can get CP on it can they? Not a comforing thought that he is slip/crab/upside down landing and arguing about trading Iginla all at the same time. I know I am on CP at my job but that is TOTALLY different.