Translations:KAVAN Robin Glider Kit 495mm - Instruction manual/22/en

From KAVAN RC Wiki

Hold your model with the wings and fuselage level. Launch your model with a gentle push straight with the nose pointing slightly down. Do not throw your model with the nose up or at a greater angle than 10 degrees down. The model must have a certain minimum speed from the very start to stay airborne. It is not enough to just place your model in the air. It is better to land in tall grass to prevent any damage to your model during initial trimming.