[NSRCA-discussion] Proposed rule change

[Ed White]

It seems a bit odd to me.  I can agree with allowing wind drift in stall turns. It not just a good idea, its the law (laws of physics).  But I'm having problems with the "The wind corrected attitude of the model must
not be changed as the stall is approached"  I agree that the plane slows the wind corrected attitude must change to maintain flight path and at some point that becomes impossible and wind drift occurs.But would not this be the only case where the rules specify an attitude even though that attitude does not produce a wind corrected flight path?    

Why not just permit wind drift in the rules?

Also, I'm struggling with a rules change with the rationale, "Stall turns flown as described in the changes
always score better with the majority of judges." That may be true, but why should we institutionalize some manner of flying the maneuver in the rule book just because it scores better?

Ed




________________________________
From: Don Ramsey <don.ramsey at suddenlink.net>
To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
Sent: Saturday, October 10, 2009 11:17:25 AM
Subject: [NSRCA-discussion] Proposed rule change

 
What do you guys think of this rule change for stall turns?
 
In the Judge’s Guide Page
RCA 20 of Regulations under “Stall Turns”: 
Change  1.. Lines must
have exactly vertical and horizontal flight paths.  To
1.  Horizontal lines must be wings level and
parallel to the flight line.  On entry vertical
lines must be wind corrected to establish a vertical track.  The wind corrected attitude of the model must
not be changed as the stall is approached and any wind drift is not cause for
downgrade unless the model drifts out of the maneuvering area.
 
In the maneuver
descriptions under “Figure M with or
without Rolls” 
Change
downgrade 1 from “Model not
vertical at start and finish of rolls and stall turns” to
 
1.  Horizontal and
vertical lines must be flown as described under “Stall Turns” in the Judge’s
Guide above.
 
In the maneuver
descriptions under “Stall Turns with or
without Rolls” 
Change
downgrade 3 from “Model track not
vertical at start and finish of rolls and stall turn”  to
 
3.  Horizontal and vertical lines must be flown
as described under “Stall Turns” in the Judge’s Guide above.
 
 
Here’s the logic behind the change:
 
Once a crosswind becomes
stronger than the speed of the model the model can no longer maintain a
vertical track even if turned 90 degrees into that wind.  Stall turns flown as described in the changes
always score better with the majority of judges.  This change brings the stall turn in line
with the spin in allowing some wind drift of the model as it slows and provides
a much more consistent judging standard.
 
 Don
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