Today's Message Index:
----------------------
1. 07:10 AM - Re: Canopy reflections and fire (Tex Mantell)
2. 04:27 PM - Re: Ul390 lightning installation progress (richardcoo)
Message 1
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| Subject: | Re: Canopy reflections and fire |
Bill, I was not that lucky. I left it open and went in the FBO to pay for
gas. Bad day at Black Rock.
Tex
----- Original Message -----
From: "Bill Strahan" <bill@gdsx.com>
Sent: Sunday, October 06, 2013 4:47 PM
Subject: Lightning-List: Canopy reflections and fire
>
> I think it was on this forum that I read several years back about an open
> canopy concentrating enough light to set the dash on fire. I'm so glad I
> read that!
>
> I was in Salida, CO on a gorgeous and VERY clear sunny day. I parked the
> plane and popped up the canopy. The sun was just back over my shoulder,
> and while sitting there for 30 seconds or so, I suddenly noticed the smell
> of burning chemicals!
>
> I'm so glad I read about the canopy and it's potential to focus the sun,
> because it immediately caused me to look down to the dash. Flames!
>
> I swatted them with one hand and pulled the canopy halfway down with the
> other. Very little damage done, but if I had opened the canopy and walked
> away this would have been a bad one!
>
> It's important to realize it's not the canopy acting like a lens, it's the
> canopy as a mirror. Sure, perhaps it only reflects 5%, but it's a BIG
> canopy and the focal point on the burned point is less than a square inch.
> Call the canopy 6 square feet (conservative) and with just 5% reflectivity
> you've got 30 watts thrown into a very small area.
>
> Careful with the canopy. My rule now is always: If it's open I'm with
> it, unless it's in a hanger!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=409955#409955
>
>
>
Message 2
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| Subject: | Re: Ul390 lightning installation progress |
The UL390is looks great Nick. Any idea which prop Doug and Rhonda are planning?
I note that Gerd is considering an Italian GT Propellers electrically operated
constant speed option.
Thanks for the photos from the weekend's Homecoming.
Kind Regards
Richard Cookson
Wellington, NZ
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=410029#410029
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