Today's Message Index:
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1. 07:48 AM - Re: Firewall test (sonja.englert@juno.com)
2. 09:48 AM - Re: Firewall (Esa Lehto)
3. 10:17 AM - Re: Firewall test (rockford67)
Message 1
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| Subject: | Re: Pulsar-List:Firewall test |
The only thing the aluminum is useful for is protection of the fiberfrax from liquids.
The melting point of aluminum is way below the >2000 F expected from a
fire. So if there is a fire, this will happen: hole is melted in the aluminum,
fiberfrax does not protect anything, resin is burned out from composite sheet
of fuselage, toxic smoke enters the cabin. I have watched a lot of firewall
burn tests, they are nasty even if performed outside. Direct exposure to the smoke
in the cockpit must be avoided. The only way is a sealed firewall.
A steel sheet protects from burn-through, fiberfrax provides some insulation to
keep the temperature of the composite bulkead low enough to prevent it smoking,
at least for a while.
Sonja
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Message 2
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Hi Chris,=0A=0AI have fibrefax and stainless steel top of that.=0A=0A-Esa
=0A=0A=0A=0A________________________________=0AFrom: rockford67 <cphorsten@
yahoo.ca>=0ATo: pulsar-list@matronics.com=0ASent: Thursday, July 21, 2011 1
1:13 AM=0ASubject: Pulsar-List: Firewall=0A=0A--> Pulsar-List message poste
d by: "rockford67" <cphorsten@yahoo.ca>=0A=0AHey Builders,=0A=0AWas there a
ny specific instruction on installing a firewall in the pulsar xp? Mine see
ms to have an aluminum one, but I MUST have something proven to be fire rat
ed. My inspector suggests that a lot of glass planes used fibrefax on the f
irewall which may suffice, and with the aluminum on top would be fine, howe
ver, I can't seem to find anything in the manuals and logs describing any s
pecific application. What did most of you do?=0A=0AThe standard acceptable
firewall here is Stainless steel. My plan is to add a stainless layer over
top of the aluminum one as it appears to be bonded in and I'd prefer not to
remove it. Of course, if there is fibrefax behind as part of the original
fuse kit then I'm good too...=0A=0AAny thoughts?=0AThanks=0AChris=0A=0A=0A
=0A=0ARead this topic online here:=0A=0Ahttp://forums.matronics.com/viewtop
- - - - - - - - - - - - - -Matt Dralle, List Admi
=====
Message 3
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| Subject: | Re: Pulsar-List:Firewall test |
Ya, that's what I'm hearing now. I wonder if there are any link on Youtube to see
some of these tests? Would make a compelling argument for changing to SS at
the next opportunity!
Thanks for your expertise!
C
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=347404#347404
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