What does the tail actuation system (TAS) include that assists in guidance?

The tail actuation system (TAS) is a critical component that contributes to the guidance of a missile or rocket. It encompasses several elements that work together to ensure precision and control during flight.

The inclusion of fins in the TAS is particularly significant, as fins are essential for aerodynamic stability and maneuverability. They adjust the vehicle's trajectory by changing the direction of the airflow over the body, allowing for fine-tuning of the flight path.

Additionally, a mission computer is part of the TAS, serving as the brain of the system. It processes guidance data and makes real-time adjustments to the tail actuation mechanisms, ensuring that the vehicle stays on course and responds effectively to changes in flight conditions.

Furthermore, the GPS antenna plays a vital role in providing accurate location data and guidance information. By receiving signals from satellites, the antenna helps determine the vehicle's position and velocity, which is essential for navigation and targeting.

All these components—fins, the mission computer, and the GPS antenna—are integral to the functionality of the tail actuation system, working collectively to ensure effective guidance throughout the flight of the vehicle. Hence, the selection of all these elements as part of the TAS is correct, as they together enhance the overall performance and accuracy of