EuroHarmony Community Forums

Archive => EuroHarmony VA => Old Forum => Technical discussions => Topic started by: EHM-2144 Terry on July 22, 2007, 10:25:14 am

Title: Wind Correction
Post by: EHM-2144 Terry on July 22, 2007, 10:25:14 am

Could someone confirm to me that when taking wind direction into account the direction is taken from where the wind is coming from and not where it's blowing to.

Terry

Title: Wind Correction
Post by: EHM-1009 Kevin on July 22, 2007, 10:52:49 am

I believe that if you are flying a heading of 270 and the wind is at 270/65 you have a very strong tail wind if the wind was at 90/65 you would have a very strong head wind. hope this answers yr question.

Title: Wind Correction
Post by: EHM-1651 Christian on July 22, 2007, 11:20:17 am

The wind is always named by direction is originating.

Title: Wind Correction
Post by: EHM-1001 Robert on July 22, 2007, 06:09:18 pm

Exactly ;) I think the above example was not good.

What I do not understand with winds, is why you should steer a little to wind direction when landing ? For example, if you have a left wind you need to steer a little to the left (against it) :s As the wind hits the tail mainly, I do not understand this phenom ;D

Title: Wind Correction
Post by: EHM-1612 Paolo on July 22, 2007, 06:43:39 pm

http://img297.imageshack.us/img297/4981/windcorrectionlo8.gif

If the rwy is BA (approximately hdg 200), the wind is blowing from 315° at 40knots, you need to correct to hdg 230 to center the runway.
If you don't correct hdg wind pushes you on the right, you'll land but probably on a farm or a field :)
I've never calculated it, you just try it and you get the correct hdg quite easily
Hope this helps ;)

Title: Wind Correction
Post by: EHM-1570 Bruce on July 22, 2007, 07:28:31 pm

When approaching in a high cross wind you have to crab towards the runway using the rudder, which has to be in the direction of the cross wind ie lefthand wind = left rudder, you hold this crabbing attitude until just before touchdown then you kickout (straighten the rudder). The amount of rudder will depend on the wind strength, but if you do a few practice landings with a cross wind you will very quickly get the feel of how much rudder is required.

Title: Wind Correction
Post by: EHM-2144 Terry on July 23, 2007, 10:33:37 pm

Thanks for the answers guys but little confused as I would be :%  
If I say, I was hdg 360 and the wind indicator shows that the wind is coming from 90 @14.  Then would it be correct in saying that the wind is blowing across the a/c from starboard to port at 14knts which would mean that I would have to apply right rudder to correct.

With the panel I'm using, this is how I read it.

Hopefully I wont be to embarrased:$ at the replies:o:$

Terry
EHM-2144

Title: Wind Correction
Post by: EHM-1465 Dominic on July 24, 2007, 07:35:27 am

Terry,

You got it exactly right ;)

And if you'd like to understand this topic a bit better, have a look at this great website by Charles Wood (http://www.navfltsm.addr.com/index.htm) which covers wind correction in the "Air Navigation" section and is a great tutorial for Navigation in general ;)

Title: Wind Correction
Post by: EHM-1570 Bruce on July 24, 2007, 09:15:48 am

Terry
 
Another quick note on the use of the rudder, you will have to apply the same actions with the rudder if you have an engine out, you will have to apply rudder in the direction of the GOOD engine in order to straighten out the aircraft.

Title: Wind Correction
Post by: EHM-2144 Terry on July 24, 2007, 03:39:39 pm

Thanks everyone, very helpful.  This has put me right on course / wind correction and related problems.

A great website Dominic which I will inwardly digest over the coming weeks and months.  ;)  Great reading material for navigation etc.

I will remember what you said Bruce when I get an engine failure, i hope ;)

Thanks again guys.

Terry
EHM-2144

Title: Wind Correction
Post by: EHM-1612 Paolo on July 24, 2007, 09:57:05 pm

Sorry, I have a question too... Can I use rudder on take off if I have strong winds?

Title: Wind Correction
Post by: EHM-2029 Sotiris on July 24, 2007, 10:13:49 pm

Most definitely, I would have thought...
Isn't it how you steer your plane on the ground anyway?
I have been taking off with light moderate rudder for a long time, never had an issue.
Same in real life, at least as far Cessnas are concerned.
(I know you're supposed to use the nosewheel but FS makes no distinction)

Title: Wind Correction
Post by: EHM-1570 Bruce on July 25, 2007, 08:43:22 am

Paolo

You use the rudder at any time that the aircraft tries to slew to  one side or the other. whether it be due to wind or engine failure.

Title: Wind Correction
Post by: EHM-1612 Paolo on July 25, 2007, 03:22:31 pm

Hmm, okay thx Bruce and Sotiris, just another doubt, do I have to kickout when I rotate?

Title: Wind Correction
Post by: EHM-1570 Bruce on July 25, 2007, 04:27:23 pm

Paolo

You will have to hold the rudder until you enable the auto pilot if the slew is due to the wind, if you have an engine go out on takeoff you will have to return to the airport after dumping some fuel and do an approach still holding the rudder. If you get an engine out on takeoff you should try always to keep the dead engine up (Make any turns in the direction of the good engine). You only kickout just before touch down.

Title: Wind Correction
Post by: EHM-1612 Paolo on July 25, 2007, 04:44:19 pm

Alright, thank you so much Bruce, now I'll start practicing ;)