[NSRCA-discussion] Rudder

[Bob Wilson]

I understand that the CG is the point that is judged on the up and
down-line.  So...on an upline directly into the wind the airplane will be
something less than vertical.  Conversely, on the downline the airplane will
have to be "over-rotated" (actually somewhat inverted) to maintain its
vertical track.  Recovery to horizontal flight, then, will be slightly more
than 1/4 loop.
Is this correct?


On 10/10/07, Bob Richards <bob at toprudder.com> wrote:
>
> That is the best description I have read so far. Agree 100%.
>
> Not long ago, I was talking with someone about wind correction and
> mentioned that a very small amount of aileron should be used when pulling a
> radius to a vertical line. He said if he ever saw me do it while he was
> judging, he would downgrade. I told him if I do it right, he will never see
> it. :-)
>
> Bob R.
>
>
> *J N Hiller <jnhiller at earthlink.net>* wrote:
>
>  This has been an interesting discussion. The airplane dose not establish
> a crab angle on it's own when in the air. The airplane has a crab angle in
> horizontal flight and when it is pulled vertical the wings will not be
> perpendicular to the flight path without a roll correction. The need for the
> correction will be apparent and automatically applied prior to finishing the
> radius. When a roll input is applied with elevator it changes the heading in
> the direction of roll, (think barrel roll) in this case into the wind as it
> finishes the radius. Most of the time it will be excessive requiring a
> little opposite (down wind) rudder correction unless the upwind wing was
> high entering the pull-up. Once the airplane is leaning to one side in a
> vertical the lean will increase and is especially noticeable as it slows.
> Some increase is needed to maintain wind correction and the need for
> opposite rudder to maintain a vertical track depends on how rapidly the
> airplane is decelerated. Most of the time I will try to apply some down wind
> rudder with the roll correction at about 45 degrees, before the need becomes
> visible as it is nearly always required. In short just point the airplane in
> the direction you want it to go and stir the sticks as necessary.
> Jim Hiller
>
>
>
>
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