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Not models but the real thing...


SkippyUK
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The last one in the second batch is almost a text book lesson on how to do it! Let the plane "have its head" with the wind all the way down, then last instant a bootful of rudder and a touch of opposite aileron to line the wheels up with the direction of travel. Easy to say of course - a different matter when you have 300 tons of aeroplane to deal with!

Its all in the timing - the natural instinct is to put the correction in too early. The problem with that is you can't hold it without sinking at an alarming rate. This is becuase although you look straight then (and ineed you are straight relative to the runway) because of the wind direction you're now actually sideslipping. When you see the aircraft coming in on finals, and they look sideways on, a lot people describe that as sideslipping - but its not. In that that state the plane is actually flying with the wind and there is very little if any sideslip. Its only when you try to "straighten up" (effectively yawing out of wind) that you start the big sideslipping. This leads to massively increased drag, a drop in air speed, loss of lift and hence the high rate of sink. So the trick is to delay the correction to as late as possible, then the loss of airspeed partially doesn't have enough time to kick in and even when it does you are only a couple feet off the ground so it doesn't matter - in fact its actually beneficial in getting you down faster and firmer!

Its just the same for us! So time to get out and practise those cross wind landings!

BEB

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Have a look at the A380 crosswind trials at Keflavik airport in Reykjavik, Iceland. Unfortunately the commentary is in Icelandic so I haven't a clue what they're saying! But Keflavik is used for these trials as it's a windy place with two long runways at 90 degrees to each other (so the "wrong" runway can be used for the trials) and not too much "real" traffic to get in the way.

 
 
Also similar tests for the Boeing 787 - also at Keflavik
 
 
 

 

Edited By John Privett on 16/12/2012 21:41:00

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I fly A320/21 now and x-wind landings are interesting in case of the fly by wire. If you apply the rudder at about twenty feet GENTLY the automatics prevent roll so all you see is a gentle swing of the nose. Lovely.

Cross wind landings are always a challenge but always a great pleasure in any aeroplane though, model or full size.

D

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