Mailing List lml@lancaironline.net Message #33961
From: James Keyworth <jakey@telcomplus.net>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Legcy pilots/owners FYI
Date: Wed, 18 Jan 2006 01:23:44 -0500
To: <lml@lancaironline.net>
"... I looked up to note the fuel I had put in so
far and noticed a column of white smoke coming off of
the glare shield..."

Art Jensen
LEG2  927J

Art,

In the position you described your canopy most likely acted like the reflecting mirror of a large telescope (or shaving mirror), focusing the suns rays together, and generating considerable heat.  It wouldn't take long for most things to reach kindling temperature in that situation.  Also, because of the compound curvature of the canopy, the focus likely stayed close to one spot even with the sun's motion.  It is also possible, I think, for the focal point of a large reflector to reach a temperature hotter than the open flame of a small match.

JHK
EAA # 778405


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