It's not a tiltrotor, it's a tailsitter, like many drones. "Rotor blown" part means that in any mode except for the level flight the drag is reduced by the roto

It's not a tiltrotor, it's a tailsitter, like many drones. "Rotor blown" part means that in any mode except for the level flight the drag is reduced by the rotor wash, making it more efficient in VTOL.