This is the first helicopter (that I know of) that is powered entirely by my self-designed piston engines!!! (and therefore can fly forever) it is fully maneuverable, and has a few weapons on board (to show its carrying capacity and armament, which can be removed) VTOL is engine speed, and TRIM is propeller pitch. To start, push the VTOL switch up from the zero position for a brief moment, then push it back again (the propellers MUST turn in opposite directions!) then press 1 to disengage the direction aid, then push the VTOL switch to the second to last position. Now you can slide the TRIM switch in any direction to fly up or down