What is the primary purpose of TACAN?

The primary purpose of TACAN, or Tactical Air Navigation, is to identify and locate an airfield for aircraft. This system provides pilots with precise distance and directional information from a TACAN ground station, enabling them to navigate effectively to an airfield or waypoint. TACAN is widely used in military applications due to its accuracy and reliability, especially in situations where conventional navigation aids may be limited or compromised.

Furthermore, TACAN operates in conjunction with other navigation systems, such as GPS, to enhance pilots' situational awareness and ensure safe landings. Its ability to function in various weather conditions makes it an essential tool in aviation, particularly in military operations where runway identification and location are critical. While other options may involve aspects of navigation and control, none are specifically designed to serve the primary function of identifying and locating airfields like TACAN does.