F3A - snap roll query

Troy Newman troy_newman at msn.com
Tue Nov 4 17:39:04 AKST 2003


By the way too much speed entering the snaps will cause the jump you are
referring too. This is because the its harder to stall the wing at higher
speeds....you need a quicker pitch change to get the break...The model will
fly for a distance on that new heading before the break occurs....Slower
speeds are more controllable and give a more defined break into the snap.


Troy
----- Original Message ----- 
From: "PENNISI Peter" <Peter.Pennisi at publicworks.qld.gov.au>
To: <discussion at nsrca.org>
Sent: Tuesday, November 04, 2003 9:29 PM
Subject: F3A - snap roll query


I was interrupted when I was typing I hadn't realised I was not finished
typing.


Hi Guys,

I recently read that any snap roll which finishes higher than where it
started should be zeroed automatically even if the jump is slight. I am
referring in particular to the 1-1/2 with 4 of 8 point an 3 of 4 point roll
with 1 1/4 snap.

How is this ruling being interpreted in your country. If this is the case I
will need to perform these snaps at very low speeds.

Given the stability of our modern aircraft and the relatively long tail
moments this is not an easy accomplishment.

Peter

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