[NSRCA-discussion] snaps

[Woodward, Jim R (US SSA)]

+1 for the description, "... if its not an axial roll, and its not a barrel roll, it must be a snap roll."

Jim W.

From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Troy Newman
Sent: Monday, July 05, 2010 3:50 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] snaps

Yes!  I agree with this philosophy completely. Different models will "look" slightly differently in the autorotation.
The geometry of the line must be preserved.

Troy

From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of J Shu
Sent: Monday, July 05, 2010 1:24 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] snaps

While this is a lot of fun... at the most recent Worlds the pilots/judges were told... If it's not an axial roll, and it's not a barrel roll, it must be a snap roll. Take it for what it's worth.

Back to assembly

Regards,
Jason
www.jshulman.weebly.com/<http://www.jshulman.weebly.com/>

________________________________
From: f3a-discussion-bounces at lists.f3a.us<mailto:f3a-discussion-bounces at lists.f3a.us> <f3a-discussion-bounces at lists.f3a.us<mailto:f3a-discussion-bounces at lists.f3a.us>>
To: 'General pattern discussion' <nsrca-discussion at lists.nsrca.org<mailto:nsrca-discussion at lists.nsrca.org>>; f3a-discussion at lists.f3a.us<mailto:f3a-discussion at lists.f3a.us> <f3a-discussion at lists.f3a.us<mailto:f3a-discussion at lists.f3a.us>>
Sent: Sun Jul 04 17:11:46 2010
Subject: [F3A-Discussion] snaps
Given the abundance of snap maneuvers(7 maneuvers, 9 snaps) in the F-11 pattern, I feel compelled to give the exact description via the F3A rulebook:

A snap-roll is a rapid autorotative roll where the model aircraft is in a stalled attitude, with a continuous high angle of attack.

Snap rolls have the same judging criteria as axial rolls as far as start and stop of the rotation, and constant flight path through the manoeuvre is concerned.

At the start of a snap-roll, the fuselage attitude must show a definite break and separation from the flight path, before the rotation is started, since the model aircraft is supposed to be I a stalled condition throughout the maneuver.  If the stall/break does not occur and the model aircraft barrel-rolls around, the manoeuvre must be severely downgraded(more than 5 points).  Similarly, axial rolls disguised as snap-rolls must be severely downgraded(more than 5 points)

Snap-rolls can be flown both positive and negative, and the same criteria apply.  The attitude(positive or negative) is at the competitors discretion.  If the model aircraft returns to an unstalled condition during the snap-roll, the manoeuvre is severely downgraded using the 1 point/15 degree rule.



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