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Subject: RE: [FlyRotary] Re: Fire extinguishers
Date: Tue, 23 Aug 2005 10:58:34 -0500
Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E023D5866@MAIL01.austin.utexas.edu>
Thread-Topic: [FlyRotary] Re: Fire extinguishers
Thread-Index: AcWn9+x+rKeJeD24QQKChDXt7K3ZFAAAcM+Q
From: "Mark R Steitle" <mark.steitle@austin.utexas.edu>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>


-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Ernest Christley
Sent: Tuesday, August 23, 2005 10:32 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Fire extinguishers

Bulent Aliev wrote:

> I was just thinking: a sensor from a house smoke alarm positioned at=20
> the cooling air exit point, can give a first alert signal? Any smoke=20
> has to come out there.
> Buly

<snip>
There was a recent thread on the Aerolectric list that discussed=20
detection techniques. Infra-red detectors were recommended, and they're=20
supposed to be fairly cheap and will feed into one of those miniature=20
monitors so that you can see what is happening.  In my opinion, it's=20
more weight and complexity than it's worth.  =20
<snip>

Buly,
I read the thread on the Aero-Electric Connection with much interest.  I
also did a bit of web-surfing and found a commercially available circuit
board specifically designed for the UV Tron R2868 Flame Sensor.  It is
made for the robot folks.  The circuit board and the UV Tron sensor sell
for $78.  Not bad for a device that can spot fire (not smoke) and is not
fooled by sunlight or other light sources.  The UV Tron sensor by itself
is $48.  Mount it in a small project box with a hole for the sensor to
"see" out, and hook it to a warning horn or LED.  Not too bad for under
$100.  Of course, it won't put the fire out, only warn that you're on
fire.

See =
http://www.superdroidrobots.com/shop/item.asp?itemid=3D127&catid=3D35

Mark S. =20