[NSRCA-discussion] basic judging question
Bill's Email
wemodels at cox.net
Wed Oct 7 06:12:42 AKDT 2009
OK, and WOW. Things have changed since my tenure then is all I can say.
Woodward, Jim (US SSA) wrote:
>
> Bill -- I can see where the confusion is - as I perfectly relayed the
> information as taught in the SE judging seminar and confirmed in the
> practical judging practice held on Sundays. The IMAC judging
> committee interprets the definition to mean that the attitude
> (fuselage) must be in the vertical plane during the rotation. They
> further back this up by stating that if the plane were to be in the
> "wind-corrected" attitude (not perfectly vertical) during the
> rotation, that it would be subject to the 0.5 pt per 5 degree rule.
> I've been in the room 3 times when Wayne M. has explained this and
> answered many questions from it.
>
>
>
> Lots of discussion took place over this in the judging seminar.
> Basically they are teaching that for "yaw" you can remain wind
> corrected, but for the pitch axis, you must be in the vertical plane.
> Sorry if this seems to contradict the rule, but this is what is being
> taught and practiced in the South East.
>
>
>
> I think it looks funny, and I would prefer for the interpretation to
> allow "wind-correction" for any time, but I must fly what they teach
> as the scoring criteria SE. On the other hand, I would love to know
> if this has changed as well.
>
> Thanks,
>
> Jim
>
>
>
>
>
>
>
> *From:* nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] *On Behalf Of
> *Bill's Email
> *Sent:* Wednesday, October 07, 2009 9:48 AM
> *To:* General pattern discussion
> *Subject:* Re: [NSRCA-discussion] basic judging question
>
>
>
> Woodward, Jim (US SSA) wrote:
>
>
>
>
>
> However, this dovetails into the recent IMAC & Pattern comparison
> threads. In IMAC, the plane is supposed to be brought into the
> "vertical plane" prior to the stall-turn(pivot) taking place. This is
> mostly evident if you are flying in a strong headwind where you are
> wind correcting the vertical line. Just prior to the stall turn, the
> pilot hast to pitch the plane into the vertical plane, then yaw around
> the pivot, then return to the wind corrected down line.
>
>
>
> Not sure where you got this about IMAC, but it is incorrect. This may
> be the cause of your confusion (from Rule 8.5):
>
> The wings must remain in the vertical geometric plane throughout the
> turnaround, and the aircraft's attitude before and after the
> turnaround must be absolutely vertical (unless wind correction is
> required), with no extraneous tail movement. There must be no rotation
> around the pitch or roll axis. If there is movement around any axis
> other than the yaw axis, often referred as "torquing" (Fig. 25), there
> is a deduction of 0.5 points per 5 degrees of axis.
>
> At no time in IMAC is the actual attitude of the plane judged, it is
> ALWAYS the track of the theoretical center of mass. You are not
> required to alter the pitch of the plane at the point if the rotation
> starts if the pitch attitude in not vertical due to wind correction.
>
>
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>
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