Tuesday Afternoon at the Dinan Airfield

Yann LeCun's all depron delta wing with an Astro mighty 010 brushless motor. 200 grams, 50cm wingspan, Hitec feather radio, underpowered on 6 cells 350mAh, but would fly fine with 7 cells.
Jean-Claude LeCun's carbon fiber park flyer with an Astro mighty 010 brushless motor and 2 cell 800mAh Tadiran Lithium battery.