[SPAM] Re: Snao G's

[Ron Van Putte]

On Jan 28, 2005, at 7:05 PM, Cameron Smith wrote:

> I look at it more as “Energy Management”.   I’m replacing wings on a 
> large gasser from “Poor Energy Management” Dropped it to far with NO 
> throttle & Pulled a Sharp Parachute and the Crack could be heard 
> across the county.

Cameron - Was it a big county?  <BG>

Ron Van Putte

> ----Original Message-----
> From: discussion-request at nsrca.org 
> [mailto:discussion-request at nsrca.org] On Behalf Of Ken Thompson III
> Sent: Friday, January 28, 2005 5:57 PM
> To: discussion at nsrca.org
> Subject: Re: [SPAM] Re: Snao G's
>
>  
>
> Walls I can see the stress, however I understand that the correct way 
> to enter a wall is at 1/4 throttle or less.  I'm not one of those big 
> ego guys, so correct me if I'm wrong.
>
> Parachutes are more of a controlled fall, from a partial wall up high, 
> and Blenders begin from a stalled state.  Of course when you slam the 
> throttle to push the plane through the Blender, that could hurt a 
> bunch.
>
>  
>
> Ken
>
>  
>
>  
>
>  
>
> ----- Original Message -----
>
>  From: Ed Alt
>
> To: discussion at nsrca.org
>
> Sent: Friday, January 28, 2005 5:05 PM
>
> Subject: [SPAM] Re: Snao G's
>
>  
>
> Yep, but the transition into it can be stressful.  Stuff like Walls, 
> Parachutes, Blenders, certain brands of Waterfalls put mucho strain in 
> the airframe. 
>
>  Ed
>
> ----- Original Message -----
>
>  From: Ken Thompson III
>
> To: discussion at nsrca.org
>
> Sent: Friday, January 28, 2005 4:16 PM
>
> Subject: Re: Snao G's
>
>  
>
> Matt,
>
> I could be wrong, but isn't 3D, by definition, done in a constant 
> state of stall?  Wouldn't that eliminate a lot of the high G's in the 
> maneuvers?  I wouldn't think the airframe would be in as stressed 
> state, when the flying surface is depending on prop wash, not air 
> speed, to do it's thing.
>
>  
>
> Ken
>
> ----- Original Message -----
>
>  From: Rcmaster199 at aol.com
>
> To: discussion at nsrca.org
>
> Sent: Friday, January 28, 2005 1:46 PM
>
> Subject: Re: Snao G's
>
>  
>
> 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
>
>  
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/enriched
Size: 12915 bytes
Desc: not available
Url : http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20050129/3e99b62c/attachment.bin