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ACRO E-mail Archive Thread: [IAC] Brian Howard's Article -Reply


Thread: [IAC] Brian Howard's Article -Reply

Message: RE: [IAC] Brian Howard's Article -Reply

Follow-Up To: ACRO Email list (for List Members only)

From: John Nagy <JNAGY at>

Date: Fri, 16 Jul 1999 14:55:49 UTC


  I think we are getting there on the "what is a 10 score slow roll?"
question.  Thinking especially about Dorsey's descrpition of the
longitudinal axis, the separate roll axis, and the cg, then overlaying
Dungan's judgeing criteria . . . we are getting at Peterson's subject
"barreling" which I experience in my airplane as longidudinal axis

I have often wondered how judges deduct  for three dimensional
deviations described as "barreling."  Do they count the excursions left,
right, up and down?  Is that four deductions?  Full points for each?  How
can a visibly barrelled roll ever count more than a six?  Do they count
them as excursions and corrections for eight deductions?  How then can
a visibly barrelled roll ever score higher than a two?

ORRRR are US judges out of the "deductions" business on all figures, as
I suspect they are on an 80K figure in unlimited.  (If there are eight major
rolls and loop components in an 80 K figure and all eight are flown to a
9.5 . . . the highest possible score is a SIX.)   

>>> "Dungan, Greg  D" <DunganGD at> 07/16/99 09:40am
Thanks Ray.  I'm with Ray, Brian and Allyson on this one.

I'm a relative newcomer to judging, only three years experience. 
Don's recent comments on "barreling" are a case in
point and provided me with a great deal of food for thought (thanks

Don, I do agree with you that there are areas where the Red Book
need more clarification. 

 a roll on a horizontal line is a 10 when the CG never varies from
a level (horizontal) flight path and the heading of the longitudinal axis
never varies from the X or Y axis; even if a strong cross-wind is
blowing a competitor across the box, heading must remain aligned with
the box axis the line is on.  Perhaps it would be better to say "changed
heading during the roll" in stead of "barreling"?  Does my mind need
improvement on this?

Greg Dungan
IAC 16628, Ch58
Pitts S-1S+
Patuxent River, MD


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