The Rotachute was intended as a more steerable alternative to the traditional parachute. During development, the designs kept growing until it evolved into this tiny autogyro. There was even a Rotajeep—which was exactly what it sounds like: a Jeep fitted with a rotor for airborne troops. None of them were actually a success, but they are certainly fascinating subjects.
But hey…. they want you to work extra harder to build a good kit. 
