Hello FliteTest! This week I finalized the design and built the 50% scale solar airplane prototype. I'll complete it's first flight next week!
My current mission is to build an RC airplane capable of indefinite flight, where solar panels installed on the wings power the airplane and charge the batteries by day, and then those same batteries power the airplane during the night.
This 50% scale prototype will test some of the design elements of that airplane. It doesn't carry solar panels as it's wing area would be insufficient for a good test, but that it is coming up on the 75% and of course 100% scale versions.
Wingspan: 156cm / 61in
Wing Details: 156cm / 10cm / Clark Y
Total Length: 97cm / 38in
Weight (no batteries): 510g / 18oz
Weight with 1 NCR18650B Pack: 703g / 24oz
Weight with 2 NCR18650B Packs: 896g / 32oz
Follow the mission and learn more on: http://www.mygeekshow.com/24-hour-solar-uav/
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Filmed, Edited, Produced and Published by Trent in Arkansas, USA
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you do a duration plane with the wingshape for best glide at high speed and a bulky fuselage?
I would have expected a low drag fuselage and a low sink wing. Adding a small geared motor and a large propeller just like rubber powered models are made. This would stay up for ages.
Beware of flutter
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like the others that commented i recommend Dihederal, I've had great luck with "three breaks" on my rudder only planes (kind of like the Old Fogey wing). I would also think about a slower thicker and wider wing in the past that has actually given me better stability and duration than thinner higher aspect wings. I can't wait to see this thing when it is finished.
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The batteries do look like NiMh, but they are NCR18650B, an advanced version of LiIon batteries with 2x the energy density of LiPos.
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