Check the instructions please. BCD and NASA worked on the Rotating Wing project for 7 months before it was cleared, a record for this style of STOL able aircraft. For high performance takeoff rotate wings half a notch upwards on the VTOL slider, for high performance landings rotate wings all the way down on the VTOL slider (2 notches). This idea has been a concept for a while, it works by rotating the wings level with the airflow and the prop past 50* to work as a helicopter (almost) by pulling the plane up at an angle of attack that would usually stall the wings but doesnt for obvious reasons. Sorry its a low detail build but the boys at NASA said I couldnt put any stickers one :(