Well these guys claim to do so.
https://firechampion.com/?gclid=EAIaIQobChMIzYDJ16vL1gIV0BNoCh0XawzrEAAYASAAEgLkVfD_BwE
In the video though they say a failing Li battery
releases oxygen. Maybe most of that escapes on
rupture and the extinguisher puts out the burning
metal/polymers/flammable gases.
Then there is
this:http://batteryuniversity.com/learn/article/safety_concerns_with_li_ion
And this:
https://electronics.stackexchange.com/questions/223245/what-type-of-fire-extinguisher-do-i-need-for-lithium-polymer-batteries
There's lots more. I Goolagd "Lithium battery fire extinguisher".
All very confusing. I'm still not clear on what type of extinguisher to use.
Note Boeing put Li-ion batteries in the 787 and
had a couple of fires forcing re-design of the
battery box. Airbus use them in the A350 now also.
There was a discussion on Aviation Week and Space
Tech about Boeing. They subcontracted out the
design of the battery system. That subbie
contracted the management system to Thales who
contracted Yuasa for the batteries.
The original subbie managed to burn down their
test facility including admin offices during
testing according to one commenter.
I also worry about current petrol engine
motorgliders. Originally the engines were up in
the breeze on the pylon which was probably OK as
you would turn off the fuel and there wasn't a
lot else to burn. Then the engines ended up in
the fuselage for noise reasons and the
"firewall" seems to be a stuck on layer of
kitchen alfoil. Some have a nice red light on the
panel to detect overheating there but IMO one
thermistor isn't enough and there's no
extinguisher. Sure you can bail out but the
flaming glider is then a hazard to innocent third
parties.
Those of you keen on "certification" should
realise it doesn't always mean what you think it
does. It can get political and "Germany Inc" has
a lot of influence. I've seen stuff in
"certified" motor gliders that I wouldn't sign off on.
Mike
At 10:15 PM 9/29/2017, you wrote:
What sort of extinguisher can be relied apon to put out a LiPo on Fire?
On Fri, Sep 29, 2017 at 8:35 PM, Noel Roediger
<<mailto:[email protected]>[email protected]> wrote:
Interesting.
But the report doesn't really tell us anything we don't know about LiPo's.
SR 018, 019 and 020 are as useless as TOAB
without requiring an extinguisher to be carried - and there is none.
I understand some manufacturers of SLS's already
incorporate fire warning systems but without extinguisher backup.
Not with-standing, it must be realized that any type of battery can explode.
I look forward to the AAIB report on the
certification process followed by EASA.
Noel.
-----Original Message-----
From: Aus-soaring
[mailto:[email protected]] On Behalf Of Justin Couch
Sent: Friday, September 29, 2017 5:33 PM
To: <mailto:[email protected]>[email protected]
Subject: Re: [Aus-soaring] FES fire in the UK
Here's the actual AAIB report:
<https://assets.publishing.service.gov.uk/media/59c8f175e5274a49c07f4704/AAIB_S3-2017_G-GSGS.pdf>https://assets.publishing.service.gov.uk/media/59c8f175e5274a49c07f4704/AAIB_S3-2017_G-GSGS.pdf
On 29/09/2017 7:02 AM, Future Aviation Pty. Ltd. wrote:
> Good morning all
>
> This was sent to me over night by a German friend of mine.
>
> As you can see, no mention was made of the type of battery used here.
>Â From my visits to the AERO trade fair I
know that some manufacturers use LiPo Batteries.
> They have the best power to weight ratio but
they are known to be extremely dangerous.
> I will attempt to find out if this type of
battery was installed in this glider.
>
> Kind regards to all
>
> Bernard
>
>>Â From UK, newspaper report:
>>
>>
>>
>>
>> The Air Accidents Investigation Branch has
made a safety recommendation after a sailplane
burst into flames shortly after landing in
Parham Airfield. On August 10, 2017, the glider
sailplane set off from the airfield between
Storrington and Pulborough at 10.21am for a
flight lasting approximately two hours. The
glider was flown normally to a smooth
touchdown, according to the AAIB, until the
pilot heard an âunexpected noiseâ. The AAIB
report said: âAs the glider slowed during the
ground run, the pilot smelled burning and the
cockpit filled with smoke that was moving
forwards from behind the pilotâs head. âHe
vacated the cockpit normally, without injury,
and observed that the Front Electric Sustainer
(FES) battery compartment cover was missing and
that smoke, followed shortly by flames, was
coming from the battery compartment. âThe
airfield fire truck arrived promptly and an
initial attempt was made to extinguish the fire
using a CO2 gaseous extinguisher, but this
proved unsuccessful. âAqueous film-forming
foam (AFFF) was then sprayed into the FES
battery compartment and the fire was extinguished.â
>>
>>
>> The pilot was the only person on board the glider, according to the AAIB.
>>
>> He did not report observing any warning
messages or illuminated LEDs, when asked by the
AAIB, although his attention was drawn outside the cockpit during landing.
>>
>> The AAIB report found existing FES battery
installations âdo not provide sufficient warningâ to a pilot of a fire.
>>
>> As a result, the AAIB made a safety
recommendation that âall powered sailplanes
fitted with an FES system, must be equipped
with a warning system to alert the pilot to the
presence of a fire in the FES battery compartmentâ.
>>
>> The AAIB investigation confirmed the
âorigin of the fireâ was the forward FES battery.
>>
>> The report added: âIts battery box was
ruptured along the rear left corner and the
battery assembly was heavily fire damaged.
>>
>> âThe rear FES battery box suffered from
external fire damage although the internal
components were only slightly damaged and the cells remained charged.
>>
>> âThe FES battery compartment was heavily fire damaged.
>>
>>
>>
>> see also
>>
>>
<https://www.gov.uk/aaib-reports/aaib-special-bulletin-s3-2017-on-hph->https://www.gov.uk/aaib-reports/aaib-special-bulletin-s3-2017-on-hph-
>> glasflugel-304-es-g-gsgs
>>
<<https://www.gov.uk/aaib-reports/aaib-special-bulletin-s3-2017-on-hph>https://www.gov.uk/aaib-reports/aaib-special-bulletin-s3-2017-on-hph
>> -glasflugel-304-es-g-gsgs>
>>
<http://www.front-electric-sustainer.com/news.php>http://www.front-electric-sustainer.com/news.php
>> <http://www.front-electric-sustainer.com/news.php>
>>
<http://publicapps.caa.co.uk/docs/33/20170906EASAAD20170167E.pdf>http://publicapps.caa.co.uk/docs/33/20170906EASAAD20170167E.pdf
>> <http://publicapps.caa.co.uk/docs/33/20170906EASAAD20170167E.pdf>
--
Justin
Couch              Â
  <http://www.vlc.com.au/>http://www.vlc.com.au/
Java 3D Graphics
Information         Â
<http://www.j3d.org/>http://www.j3d.org/
LinkedIn          Â
<http://au.linkedin.com/in/justincouch/>http://au.linkedin.com/in/justincouch/
G+Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
            WetMorgoth
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 Turn it or move it, and a new set of arrangements appears... is it
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