F3A - snap roll query

Wed Nov 5 13:17:05 AKST 2003

Visually, there is a range of snaps that look good and are OK.  There is a
barrel-roll which obviously blows out, versus a tight snap.  Easiest zero to
handout.  In the blink of an eye, easy to identify as barrel-roll and zero.
An impression is left instantly that says, "that is not a snap."

I think the problem judging is determining the difference between a tight
fast snap, and an ultra fast aileron roll with a tail wiggle.  Not easy to
determine.  This may sound simple, but if I have to think twice about
weather it was a great looking tight snap, or a fast aileron tail wiggle, it
gets a downgrade and not a zero.  The speed change is a big help to me.  If
I can see a speed change, it helps to determine it a snap.  If the maneuver
is flown through with no speed change, it is harder to call a snap.  

Jim W.

-----Original Message-----
From: mike mueller [mailto:mups1953 at yahoo.com] 
Sent: Wednesday, November 05, 2003 2:06 PM
To: discussion at nsrca.org
Subject: Re: F3A - snap roll query

 Steve I agree with you. Now how do we get everyone on the same page? Even
the judges at the Worlds disagreed on this. When I'm judging and flying I
know a good snap from a bad one but I'll be damned if I can explain it. I
just feel I know it. Mike

Patternrules at aol.com wrote: 

In a message dated 11/5/2003 3:47:17 PM US Eastern Standard Time,
wgalligan at goodsonacura.com writes:

> Snaps - A Snap is a simultaneous, rapid autorotation in the pitch, yaw and
> roll axis of flight in a stalled wing attitude.  The following criteria
> apply:
>
>   1.. Since the maneuver is defined as a stall maneuver (initiated by a
> rapid stall of the wing induced by a change in pitch attitude), the nose
of
> the fuselage should show a definite break from the flight path in the
> direction of the snap (positive or negative

Steve Maxwell

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