 The shape of the missile and its fins were utilized though at 52% of size of the Wasserfall.The exhaust vanes used for low velocity control of Wasserfall were omitted and preliminary guidance was provided by a launch tower similar to that used by the RTV-A-2 and Aerobee (RTV-N-8 / RTV-A-1)rockets.The engine for NATIV was a development of the WAC Corporal engine.