Displacement during snap rolls (was Why is it so quiet?)

[Doug Cronkhite]

That's because you're actually stalled. Most people think a snap roll is a
high G maneuver, but when the wing stalls, there can be no G other than 1
except for the rotational component. 
 
I remember awhile ago people on this list were discussing the inverted
avalanche and how people were going to break wings. If they break a wing on
this maneuver, it's because they never stalled. Not exactly the nicest
indicator but it is one none the less. A properly flown snap puts much more
torsional stress on the fuselage than the wing well ever experience.
 
Also.. weren't you uncomfortable sitting on Steve's lap in the 300S? :-P
Hehehe.. I think you meant 300L..
 
-Doug
 
 


  _____  

From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
Behalf Of tony at radiosouthrc.com
Sent: Wednesday, December 29, 2004 4:17 PM
To: discussion at nsrca.org
Subject: Re: Displacement during snap rolls (was Why is it so quiet?)


Bob:

Speaking of being in a full-scale airplane, I was in an Extra 330S with
Steve Rojecki, and we did several snaps.  I was VERY surprised to find that
the snap was pretty smooth....  not at all what I was expecting!  Yes, my
head moved around a bit, but I was not thrown around the cockpit like I
thought I would be.  I am sure that the way we entered it had a lot to do
with it!
 
 
 
Tony Stillman
Radio South
3702 N. Pace Blvd.
Pensacola, FL 32505
1-800-962-7802
www.radiosouthrc.com

----- Original Message ----- 
From: Bob Richards <mailto:bob at toprudder.com>  
To: discussion at nsrca.org 
Sent: Wednesday, December 29, 2004 2:21 PM
Subject: RE: Displacement during snap rolls (was Why is it so quiet?)

Dean Pappas <d.pappas at kodeos.com> wrote: 

Yes, and some small forgiveness needs to be established. Say, half a
wingspan?
 

 
Similar to the (should I say it) "Stall Turn", where a 1 wing displacement
up/down is ok. It is possible for the plane to travel up/down on exactly the
same line, but there are no downgrades if it moves laterally by one
wingspan.
 
Smoothness and gracefulness have been mentioned a few times in this thread.
Somehow, I don't believe there is anything smooth and graceful about a snap
roll. :-) Have you ever been in a real plane that has done a snap roll? I
have. :-0
 
As I have said many times, the real heroes in this hobby are the cockpit
dummys. No matter what kind of crap we put them through, they continue to
hold a straight face. They won't even close their eyes before impact!!!

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