Define DACS (in reference to the THAAD Interceptor's components)

• A. Data Acquisition and Control System
• B. Divert Attitude Control System
• C. Directional Attitude Control System
• D. Digital Attitude Control System

Answer: (B)

This item tests recognizing what DACS stands for in the THAAD interceptor and what that subsystem does. DACS is Divert Attitude Control System. It combines two essential functions: attitude control, which keeps the interceptor oriented correctly so guidance and sensor data are accurate, and divert capability, which uses small thrusters to nudge the vehicle off its nominal path to achieve the intercept geometry. In practice, this means the system can precisely steer and reorient the interceptor during flight to guide it toward the target and maintain the proper attitude for effective guidance commands.

Other naming options don’t fit the established THAAD terminology. Data Acquisition and Control System would refer more to data gathering and generic control electronics rather than a propulsion/steering subsystem. Directional Attitude Control System isn’t the standard THAAD designation, and Digital Attitude Control System emphasizes digital processing rather than the combined divert and attitude control function that DACS provides.