Post by aerofoto - HJG Admin on Sept 5, 2008 21:01:33 GMT
Funny you should mention this "DRIFT" issue .... because I have experienced very minor degrees of this myself in FS2004 .... but .... from memory only when starting a flying session from the RWY.
In my case such "DRIFT" is always to the left .... but .... very minor rudder adjustment during the T/O roll always corrects it so as to maintain the RWY centerline.
Again .... any "DRIFT" I've experienced is extremly minor (which is why I've never commented regarding it in any of my notes) and hasn't caused me to veer off the RWY or any other problems.
There could be a number of reasons for this ....
1. It could be a consequence of starting flights on the RWY and FS perhaps not postioning the aircraft with 100% precision .... it would only take a fraction of a degree of RWY misallignment to cause the minor "DRIFT" I've experienced.
2. It could be that your control devices (primarily yoke and peddles .... or joystick (rudder axis) may need recallibrating.
3. I don't know if the following factor has ever been written into any of our aircraft FDE (that for B707/720/C135 at least) .... but .... my understanding is the energy generated by any rapidly spinning object .... like fans (there's a technical name for this .... only I can't for the life of me remeber what it is) will cause any aircraft to tend to "DRIFT" slightly off the centerline ..... which then needs being corrected by minor tilller steering adjustments (under 80KTS) or rudder adjustments (above 80 KTS) during the T/O roll. Wind component (if you have a crosswind situation) can also result in such "DRIFT" too.
It could be that if you startup at the gate, then taxi all the way out to any RWY, and carefully allign yourself with the centerline near any RWY threshold .... you may not experience any such "DRIFT" at all .... which then gives credence to my above #1 theory above !
Mark C
AKL/NZ
In my case such "DRIFT" is always to the left .... but .... very minor rudder adjustment during the T/O roll always corrects it so as to maintain the RWY centerline.
Again .... any "DRIFT" I've experienced is extremly minor (which is why I've never commented regarding it in any of my notes) and hasn't caused me to veer off the RWY or any other problems.
There could be a number of reasons for this ....
1. It could be a consequence of starting flights on the RWY and FS perhaps not postioning the aircraft with 100% precision .... it would only take a fraction of a degree of RWY misallignment to cause the minor "DRIFT" I've experienced.
2. It could be that your control devices (primarily yoke and peddles .... or joystick (rudder axis) may need recallibrating.
3. I don't know if the following factor has ever been written into any of our aircraft FDE (that for B707/720/C135 at least) .... but .... my understanding is the energy generated by any rapidly spinning object .... like fans (there's a technical name for this .... only I can't for the life of me remeber what it is) will cause any aircraft to tend to "DRIFT" slightly off the centerline ..... which then needs being corrected by minor tilller steering adjustments (under 80KTS) or rudder adjustments (above 80 KTS) during the T/O roll. Wind component (if you have a crosswind situation) can also result in such "DRIFT" too.
It could be that if you startup at the gate, then taxi all the way out to any RWY, and carefully allign yourself with the centerline near any RWY threshold .... you may not experience any such "DRIFT" at all .... which then gives credence to my above #1 theory above !
Mark C
AKL/NZ