NEWEST "Pattern Field Equipment"

[Dean Pappas]

Sorry to hear about it, Steve!
 
I once saw a NiCad electric catch fire ... well actually set fire to the grass, after a crash and short. It was a 60-sized e-pattern model done by sometimes IMAC and Pattern competitor Bob Afflerback, but at the time he was writing the e-flight column in Flying Models. The batteries were re-used after the new heat shrink was applied.
 
In the future, if the ailerons go dead, slow up, pull the nose up, and use the heck out of the rudder. I watched a Pattern flier save a ship that way, once, a long time ago. Let's put it this way, I was a teenager, at the time. Of course, his ailerons were at neutral.
 
Regards and Thanks,
Dean
 

	-----Original Message----- 
	From: discussion-request at nsrca.org on behalf of Steve & Cindy Kessler 
	Sent: Fri 2/11/2005 7:51 PM 
	To: discussion at nsrca.org 
	Cc: 
	Subject: Re: NEWEST "Pattern Field Equipment"
	
	

	Dean,
	
	I had a brain fart and forgot to plug in my ailerons.  The plane had a
	gentle roll over on takeoff and went in at a 30deg angle.  The nose of the
	plane broke off and the batteries impacted the front of the cowling.  One
	battery pack shorted and caught fire.  Except for the loss of the plane and
	battery, I gained something.  I have a heavy respect for the fire potential
	of any LiPo.  With proper handeling, I believe they are safe.
	
	Steve
	----- Original Message -----
	From: "Dean Pappas" <d.pappas at kodeos.com>
	To: <discussion at nsrca.org>
	Sent: Friday, February 11, 2005 1:03 PM
	Subject: RE: NEWEST "Pattern Field Equipment"
	
	
	Hello Steve,
	It's time for the post crash investigation:
	Caught on fire during takeoff?
	Is there any more data you can offer us?
	Did something questionable happen to the battery just prior?
	
	signed,
	Curious in Joisey
	
	
	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 Steve Kessler
	Sent: Friday, February 11, 2005 2:01 PM
	To: discussion at nsrca.org
	Subject: Re: NEWEST "Pattern Field Equipment"
	
	
	>I crashed my first electric Eclipse on take-off.  One of the 5s3p 6000ma
	batteries caught on fire.  The fire reminded me of a magnesium fire I saw
	in the lab.  Boy it sure was hot and intense.  The ceramic battery bunker
	is OK for the small Rx and foamy LiPo's.  For the larger batteries, I
	suggest you use a clay pot and possibly use the water tray as a lid.  I
	never charge my small LiPo's in the house unless I watch the units.  In
	this case they are on the work bench with nothing around them.  For my
	6000ma LiPo's, I always charge them in the garage in a clear area.
	Again, I never leave the charger until I know the charger has recognized
	the proper cell count and is charging at a voltage I would expect.  The
	current series of chargers, such as the Astro Flight 109 do a good job.
	
	Bottom line is protect your self in case of a fire.  Never leave the
	charger unattended until you verify the proper charge voltage.  Just my
	$0.02 worth.
	
	Steve
	
	
	> Ohhh, It Is!!! The aramid inside is flame suppresant and bullet stopper.
	> You
	> know, schrapnel that will eventually come from a battery explosion.
	> Developing the molds as we speak. Nuthin but the good composites for our
	> brethren and
	> sistern. Question is, should they have screw on, airtight lids or  should
	> these be designed to blow off??
	>
	> Forget about those silly, tricky and fragile ceramics. Drop one of them on
	> your foot brother--weeeeeooowwwww!! I garrownteee.
	>
	> Geez must be a slow Friday. Either that or Im going stir crazy and finally
	> lost the last half marble. Where is that Ocala contest when you need it
	>
	> Matt
	>
	>
	> ssage dated 2/11/2005 11:48:53 AM Eastern Standard Time, vanputte at cox.net
	> writes:
	>
	>
	> On  Feb 11, 2005, at 7:47 AM, Rcmaster199 at aol.com wrote:
	>
	>> Of course  there is. A carbon composite actually. Someone realized
	>> carbon burns  almost as hot as the Lithium does when ignited so there's
	>>  siliconised Kevlar/Nomex aramid on the inside and Carbon on the
	>>  outside. It also double serves as a bullet proof bunker.  (BG)
	>
	> Geez!  Matt had me going for a while there.  It started  out sounding
	> like something all true Patten pilots must have.
	>
	> Ron  Van Putte
	>
	>
	>
	>
	
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