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Simviation Forum › Old Flight Simulator Series › FS 2002 › Anyone Else Have This Problem??????

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Anyone Else Have This Problem?????? (Read 179 times)

Aug 18^th, 2003 at 3:03am

Simviation2003 Offline
Colonel
IFR is the most demanding
challenge a man can face
North West NSW Australia

Gender:
Posts: 126

Hello Fellow Aviator's,

Can some one tell me why on initional take off, my aircraft yaws from left to right (zig-zag) all the way to nearly lift off?

I don't seem to have the problem in the heavier aircraft i.e 373 747 or Concord, but the smaller planes have you thinking your in a tail-drager (Tailwheel).

I've tried the settings on the joystick and made sure the auto-rudder in the settings is off but to noavail.

Anyone else have this problem???

SV2003

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Reply #1 - Aug 18^th, 2003 at 3:29am

Smoke2much Offline
Colonel
The Unrepentant Heretic
Sittingbourne, Kent,

Posts: 3879

It's probably a mixture of P-Factor, torque and your joystick.

P-factor is greater at a high angle of attack, ie with a tail dragger with the tail on the ground. Torque is highest at full throttle and tends to be greater if you slam the throttle full open on take-off. I tend to use all of the runway theses days and advance the throttle slowly.

Finally my Joystick (Logitech Wingman Extreme) has an annoying rudder spike at times which can cause control problems. There is nothing you can do about that that works with my set up, just try and compensate for it with some rudder trim and try to catch the yaw early.

Will

Who switched the lights off? I can't see a thing....... Hold on, my eyes were closed. Oops, my bad...............&&

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Reply #2 - Aug 18^th, 2003 at 6:29am

PH_AJH Ex Member

Hi
I recognize the "problem" but in my case it is more something I had to get used to.
Planes (especially powerful small taildragging ones) indeed start moving left or right when you open the throttle, even more so if there is some crosswind. You'll have to compensate using rudder. Now this is what I had to practice; I tend to overcompensate (with a firm twist of my joystick), starting a motion to the other side. Which I tend to overcompensate again etc. There you have your zig-zag.
What works for me is: Don't flick the throttle open all at once, start with say 30% to get moving. twist the stick just a little to stop the motion and keep it steady. Make small adjustments and try not to start a motion to the other side. As soon as the aircraft picks up speed (and the rudder gets more effective) you'll notice you need less rudder input and the throttle can but slammed to full without to much reaction.

Hope it helps.
Cheers
AJ

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Reply #3 - Aug 18^th, 2003 at 7:08pm

Simviation2003 Offline
Colonel
IFR is the most demanding
challenge a man can face
North West NSW Australia

Gender:
Posts: 126

Thanks Fella's,

I assumed it was common amoungst us all.

Thanks

SV2003

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