For couple years I was puzzled how my brand new glare shield got a burnt spot. I didn't solder anything in the cockpit and my passengers usually don't smoke. Then I got another a bigger one. Then one day I returned to my aircraft to see a touch of smoke coming out of the cockpit. Now I know why. Ever heard of a heliograph or sunshine recorder? Your RV bubble canopy can be one of these.
Watch the sun at your six thirty.
Your bubble canopy (tip up in my case) becomes a powerful magnifying glass. Your finger won't stay like this for too long you feel the heat right away.
These marks I acquired through 4 years of flying without even knowing the cause. Only last year I was able to figure it out after seeing a smoke. Did anybody experienced something similar? What would happen if your glareshield is other then aircraft designed part?
Watch the sun at your six thirty.
Your bubble canopy (tip up in my case) becomes a powerful magnifying glass. Your finger won't stay like this for too long you feel the heat right away.
These marks I acquired through 4 years of flying without even knowing the cause. Only last year I was able to figure it out after seeing a smoke. Did anybody experienced something similar? What would happen if your glareshield is other then aircraft designed part?