This plane does not have build-in internal structures. The infill structure is recommended to use Fast Honeycomb in Simplify 3D. The infill should not larger than 2%.
Spec.
Wingspan: 930mm
Take off weight should be controlled around 970g
Wing area is around 0.17m^2
Airfoil is NACA-25112
This model airplane is a trainer, an evolution of the project we made some time ago, the Joytrainer, that airplane was big and cool, it was based on the Simple Storch by Flitetest, some people...