This is an 8 foot wingspan Styrofoam fixed wing aircraft that I used in my UAV based precision agriculture project. This aircraft is capable of carrying up to 4500 grams of payload. I have optimized the weight and electronics in this aircraft to increase the flight time up to 1 hour 20 minutes with only one 5000 mAH 4S Lipo battery. The frame of the aircraft weights 1200 grams without the electronics. I will upload the details soon.