[NSRCA-discussion] A question for the experts

[Dave Lockhart]

For the AMA M, bottom radius altitude must match the entry and exit radius
altitude, if it does not, it is listed as a specific downgrade.

 

For the FAI M, the entry and exit must be at the same altitude.  There is no
specific reference to height for the center radius.  However, "the length of
a line should only be graded when a manoeuvre contains several lines with a
given relationship, as in a square loop."  From that, it would seem
reasonable to downgrade unequal line lengths (four lines) in a Figure M, and
unequal line lengths would be necessary to have the bottom radius at a
different altitude.

 

Of course with FAI and AMA, a judge could decide an element was not smooth
and graceful and apply any downgrade they wanted, since this judging
criteria is so poorly defined and devoid of suggested downgrades.

 

Regards,

 

Dave Lockhart

 

 

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of ehaury
Sent: Friday, May 27, 2011 10:24 AM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] A question for the experts

 

>From the FAI judges guide, 5B.7.4 - Stall Turns. "Drift of the model
aircraft during the stalled condition 

must be ignored, provided the model aircraft does not drift outside the
aerobatic zone." 

Earl

 

----- Original Message ----- 

From: rcmaster199 at aol.com 

To: nsrca-discussion at lists.nsrca.org 

Sent: Friday, May 27, 2011 9:02 AM

Subject: Re: [NSRCA-discussion] A question for the experts

 

I too have an issue to bring out on the M....... specifically the F3A M

 

A question, or closer to a statement actually, was posed to me at the recent
contest regardng the height of the middle looping element.....that it did
not have to have the same height as the entry/exit looping elements; that it
specifically was not written anywhere so it didn't exist.

 

My response is that the geometry must be preserved. As long as I've flown
pattern, this maneuver's geometry always required the looping elements to be
at the same height. The way I see it, if looping element heights are to be
different, we should see some verbiage to that effect in maneuver
description

 

I don't have the maneuver description handy so if someone would please post
it, I'd appreciate it

 

regards

 

MattK

 

-----Original Message-----
From: tocdon <tocdon at netscape.net>
To: nsrca-discussion <nsrca-discussion at lists.nsrca.org>
Sent: Thu, May 26, 2011 11:34 pm
Subject: [NSRCA-discussion] A question for the experts

A question for the judging experts.

 

Figure M, both Masters and FAI- Yes I know the bottom line rule the best
presentation gets the best score, but a technical question.

 

Maneuver flow  in a crosswind.  Plane starts maneuver at 140 meters distance
out.  During the first stall turn the plane drifts out (recall this is a
stalled maneuver); second stall turn the plane drifts out again (same).  Now
the plane wind corrects in all other aspects of the maneuver but exits
approximately 20 meters further out than the entry and no defects observed,
but exit distance is 160 meters.  What is the score given for this maneuver?


Best Regards,

 

Don

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