Snao G's

[Rcmaster199 at aol.com]

If this accelerometer is finding 13 G loads generated by a Pattern  model 
snap, a relatively low amount really, I imagine that a 3D model set up for  a 
full array of stunts has to be experiencing double that at least.
 
Earl could you do any 3D type maneuvers and measurements with the  Yak?
 
Very informative discussion BTW, and may result in improved more efficient  
building technique, read-- lightest for the desired strength.
 
thanks
 
matt
 
In a message dated 1/28/2005 1:32:35 PM Eastern Standard Time,  
d.pappas at kodeos.com writes:

That's proof of stall!
If the G loading rises suddenly, and then  holds or droops continuously 
during the roll, then it's probably an  accelerated barrel.
If the profile is sudden rise, sudden drop  to maybe 1/2, then onload, you 
have a real snap.
 
Yia,
    Dean
 
Dean Pappas 
Sr. Design Engineer 
Kodeos Communications 
111 Corporate Blvd. 
South Plainfield, N.J. 07080 
(908) 222-7817 phone 
(908) 222-2392 fax 
d.pappas at kodeos.com  
-----Original Message-----
From:  discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On  
Behalf Of Rcmaster199 at aol.com
Sent: Friday, January 28, 2005  11:45 AM
To: discussion at nsrca.org
Subject: Re: Snao  G's



Good point. Once in the stall, the model should not see the  same continued G 
load. Should drop dramatically. If the plane  doesn't stall to begin with, 
different story.
 
Matt
 
In a message dated 1/28/2005 11:23:25 AM Eastern Standard Time,  
d.pappas at kodeos.com writes:

Let me  add another two cents worth ...
Earl,
What is  the sampling rate on your data logger?
Can you  see if the maximum 13-Gs at 100 MPH was sustained for the entire 
half  second or so that it took to complete the snap,
or was  it a short spike (like 0.1 second)  and then sustained at say  half 
of that value, for the rest of the snap.
Of  course, if the data logger samples once a second, we have almost no way 
of  knowing.
 
Later,
        Dean






 
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