Which system in the F/A-18 E/F is primarily responsible for threat detection?

The Radar Warning Receiver (RWR) is the primary system in the F/A-18 E/F responsible for threat detection. This system is designed to detect radar emissions from enemy radar systems, which may include ground-based missile systems or airborne threats. By continuously monitoring the electromagnetic spectrum, the RWR can identify potential threats and provide the pilot with situational awareness regarding incoming radar signals.

The information gathered by the RWR is crucial for maintaining operational readiness and ensuring the safety of the aircraft, allowing pilots to take evasive action or deploy countermeasures as necessary. This capability enhances the survivability of the aircraft during combat operations by allowing it to remain aware of its surroundings and identify potential risks before they become critical.

The other systems mentioned, such as Electronic Countermeasures, Integrated Defense Systems, and Weapons Control System, play important roles as well, but they are not primarily focused on threat detection in the same way that the RWR is. Instead, ECM provides tools to jam or deceive enemy radar systems, IDS encompasses a broader range of defensive measures, and the Weapons Control System manages the aircraft's armament.