[NSRCA-discussion] From the Judges Chair

[Jas S]

http://www.rcuniverse.com/forum/rc-pattern-flying-101/11596737-f-15-figure-9-centerline-question.html

Post #8


On Tue, Apr 8, 2014 at 6:50 PM, Jas S <justanotherflyr at gmail.com> wrote:

> Oh yea, forgot about those lol. Being in a straight line, the 'line'
> (whole maneuver) is centered with those.
>
> Someone posted a drawing of the 9 on RCU, and while the center is the
> whole maneuver works, isn't it going to be the center of the loops/roll
> when done correctly?
>
>
> On Tue, Apr 8, 2014 at 6:21 PM, Derek Koopowitz <derekkoopowitz at gmail.com>wrote:
>
>> So in years past we've had a 1 1/2 snap roll followed by a 2 1/2 rolls in the
>> opposite direction.  Where is the center on that maneuver?  The center is
>> the mid-point between the start and finish of the maneuver (including
>> straight line in and straight line out).  There is no definitive middle to
>> these types of maneuvers and so a statement that it is "somewhere in
>> between the 2 1/2 rolls" would be accurate as well - it depends on how
>> fast/slow those rolls were done.
>>
>>
>>
>> *From:* nsrca-discussion-bounces at lists.nsrca.org [mailto:
>> nsrca-discussion-bounces at lists.nsrca.org] *On Behalf Of *John Gayer
>> *Sent:* Tuesday, April 08, 2014 3:03 PM
>> *To:* General pattern discussion
>>
>> *Subject:* Re: [NSRCA-discussion] From the Judges Chair
>>
>>
>>
>> Derek,
>> "Somewhere in the 3/4 loop portion" is awfully vague and unjudgeable. I
>> could buy anywhere in the 3/4 loop portion but not somewhere.
>> The center you are describing would appear to be affected somehow by the
>> entry and exit lines of the maneuver as per your description in the March
>> K-Factor. I don't see that. This maneuver(figure 9) could be described as a
>> single loop with a straight vertical line between the first quadrant and
>> the last three quadrants. What rolls occur do not affect that basic shape.
>> That places the center of the maneuver at the initial pullup into a quarter
>> loop just as it would for a simple loop. The apex of the 3/4 loop would
>> also be on the centerline and so would the return to level flight at the
>> exit.
>> As far as the straight line entry and exit being somehow offset, I don't
>> see that either. The entry line ends at the quarter loop pullup and exit
>> line begins upon completion of the 3/4 loop. Those two points should form a
>> vertical line. I see that as the maneuver centerline as well.
>> It's certainly true that the aresti shows the wrong center and it is
>> certainly true that the sub-committee chair has the last word but he should
>> be using a better word than "somewhere".
>> John
>>
>> On 4/8/2014 3:22 PM, Derek Koopowitz wrote:
>>
>> Anthony,
>>
>>
>>
>> This shouldn't be confusing at all... the center of the maneuver is the
>> middle point between the start and end of the maneuver.  How much more
>> simple can it get?   The statement that the "middle should be somewhere in
>> the 3/4 loop portion" is correct - depending on the size of the 3/4 loop which
>> must match the radius of the 1/4 loop from horizontal to vertical when the
>> maneuver starts.  That center portion will change for every pilot as each
>> pilot will fly it differently.
>>
>>
>>
>> Your comment about "many outside the US" isn't accurate - if they see it
>> differently then they are incorrect.  The clarification I got is straight
>> from the F3 sub-committee chair...
>>
>>
>>
>> -Derek
>>
>>
>>
>>
>>
>> *From:* nsrca-discussion-bounces at lists.nsrca.org [
>> mailto:nsrca-discussion-bounces at lists.nsrca.org<nsrca-discussion-bounces at lists.nsrca.org>]
>> *On Behalf Of *Anthony Romano
>> *Sent:* Tuesday, April 08, 2014 11:27 AM
>> *To:* nsrca-discussion at lists.nsrca.org
>> *Subject:* Re: [NSRCA-discussion] From the Judges Chair
>>
>>
>>
>> Would love to see a review of maneuver 13 of the Finals sequence. In the
>> March Kfactor the center was described as "should be the middle of the
>> maneuver somewhere in the 3/4 loop portion." While the many outside the US
>> see it that the loop is centered and the Aresti in the latest FAI sporting
>> code show the upline being centered.
>>
>>
>>
>> A bit confusing,
>>
>>
>>
>> Anthony
>> ------------------------------
>>
>> Date: Tue, 8 Apr 2014 09:28:00 -0700
>> From: joncarter60 at comcast.net
>> To: nsrca-discussion at lists.nsrca.org
>> Subject: [NSRCA-discussion] From the Judges Chair
>>
>> Hey guys - we got an excellent suggestion from the group for last month's
>> article so I thought I would ask again! Anyone have a burning maneuver or
>> judging question? Just let me know.
>>
>>
>>
>> Thanks,
>>
>>
>>
>> Jon Carter
>>
>> Judging Committee Chairman
>>
>>
>>
>>
>>
>>
>>
>> Sent via the Samsung GALAXY S(R)4, an AT&T 4G LTE smartphone
>>
>>
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>>
>>
>>
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>
>
>
> --
> Jason
> http://jasonshangar.weebly.com/
>



-- 
Jason
http://jasonshangar.weebly.com/
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