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-----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 the cooling air exit point, can give a first alert signal? Any smoke has to come out there.
Buly
<snip>
There was a recent thread on the Aerolectric list that discussed detection techniques. Infra-red detectors were recommended, and they're supposed to be fairly cheap and will feed into one of those miniature monitors so that you can see what is happening. In my opinion, it's more weight and complexity than it's worth. <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=127&catid=35
Mark S.
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