Snao G's

[Tim Taylor]

You do everytime you fly the reverse Avalanche :)
----- Original Message -----
From: <rcaerobob at cox.net>
To: <discussion at nsrca.org>
Sent: Thursday, January 27, 2005 1:57 PM
Subject: Re: RE: Snao G's


> Yeaop.  That works out to about 147 lba (assuming a 10.5lb plane)
distributed on that 7/8" dia wing tube, with complete concentration of the
G's likely at the fuse/wing root intersection, with some load distribution
laterally, but I'd bet not much.
>
> How many of us ever "test" our wing sockets to 150 lbs!!!!
> >
> > From: "Michael Laggis" <fishgod at pobox.mtaonline.net>
> > Date: 2005/01/27 Thu PM 01:51:34 EST
> > To: <discussion at nsrca.org>
> > Subject: RE: Snao G's
> >
> > Very interesting.
> >
> > Michael Laggis
> >
> >   _____
> >
> > From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On
> > Behalf Of Earl Haury
> > Sent: Thursday, January 27, 2005 9:40 AM
> > To: Discussion List, NSRCA
> > Subject: Snao G's
> >
> >
> > FWIW, I took a quick look at some snap G's yesterday. Equipment was a
Quique
> > YAK (140 size) fitted with an Eagle Tree Systems datalogger with G
sensor. I
> > only gathered data from one flight - so take that into consideration.
> >
> > Flat and level pos snaps @ (nominally) 100mph = 13G, dropping the speed
to
> > 70mph = 7G. (A normal pull to vertical @ 100mph = 7G.)
> >
> > An Avalanche with a neg snap at the top measured -5G @ 50mph.
> >
> > A Rev Avalanche with a pos snap at the bottom measured 13G @ 95mph.
(Masters
> > maneuver - intentionally flown fast.)
> >
> > An Avalanche from the top (push - F05) with a neg snap and a half at the
> > bottom measured -14G @ 90mph.
> >
> > (I normally measure around 5G on upline and downline snaps with my
Partner.)
> >
> > All snaps were executed with rapid / high degree elevator lead and %
> > reduction of elevator during rotation.
> >
> > I may look at this further as the mood strikes. As expected, controlling
> > speed into snaps is easier on your airplane. None of the observed loads
(in
> > my opinion) should damage a well constructed aerobatic model (wouldn't
want
> > to ride in it though).
> >
> > Earl
> >
> >
>
> Bob Pastorello, El Reno, OK, USA
> rcaerobob at cox.net
> www.rcaerobats.net
>
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