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Permalink Reply by Ludovico Antonio on September 10, 2011 at 4:06pm

Shaded parts of the cell is pretty sad because for half of the time (we we are not flying with the sun in fornt or on the back) a little portion of each cell is not being used, still, that part is relatively small when the sun is high in the sky and alto that kind of cell when not illuminated is like an open circuit so the "shadowed" part of the cell is just a "dead weight" but is not consuming power ;)

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Permalink Reply by bGatti on September 12, 2011 at 9:44am

I think you need to research the consequences of shading a solar cell. It's not as insignificant as "dead weight".

 

http://www.renewableenergyworld.com/rea/news/article/2009/02/shade-...

 

http://www.learnonline.com/pdf/The%20Effect%20of%20Shade%20on%20Sol...

 

 

 

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Permalink Reply by Ludovico Antonio on September 12, 2011 at 4:12pm

Thankyou for the links,

 we know that shading a single cell in a series "kills" the whole thing but this is not something that happens on our plane, where all the cells are exposed almost always in the same way, so since the power of every cell is reduced by teh same amount we arent wasting energy adn we can consider dead wheight the shaded part, we ground tested this ;)

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Permalink Reply by Ludovico Antonio on February 12, 2012 at 4:50am

Hi guys! We are working on a big public archive with a lot of useful data about our aircraft, we are now working on finals exams of first semester in our engineering college (Politecnico Di Milano, a great school in northen Italy), we hope we will publish the archive in a month and a half or so.

Sorry for being so slow but since being solar powered in the winter this project went a bit on hold.

here http://www.rcgroups.com/forums/showthread.php?t=1488457#post19041620 you can find a lot more photos tho :-)

Bye!

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