The US Navy has declared initial operating capability (IOC) status for a new infrared search-and-track (IRST) sensor system developed by Lockheed Martin for F/A-18 Super Hornet strike fighters.
As informed, the IRST21 IOC declaration is a milestone achievement in support of a full-rate production decision of the sensor system following successful flight tests by the US Navy.
At the core of this innovative system is IRST21, Lockheed Martin’s long-wave infrared search-and-track sensor. This latest version of the IRST21 system “significantly increases threat-detection range” , according to Lockheed Martin. On the Super Hornet, IRST21 is integrated into the front of the centerline fuel tank.
“Achieving IOC for IRST21 is a significant milestone and a testament to the strong partnership between Lockheed Martin and the U.S. Navy,” said Paul Hey , director of Lockheed Martin’s IRST programs.
“This advanced sensor provides a critical capability to detect and track airborne threats at greater distances, ensuring pilots can complete their missions with enhanced situational awareness and survivability.”
“With this game-changing leap in passive sensing technology, IRST21 will fundamentally reshape how air warfare is conducted while keeping pilots ahead of threats,” shared Hank Tucker , vice president of Mission Systems for Lockheed Martin’s Sensors &Global Sustainment organization.
The US Navy brought IRST to the fleet through an evolutionary acquisition approach across two-phased blocks. In 2011, Block I integrated an existing IRST system onto the F/A-18 fuel tank, and in 2019, the fleet operated the system as a part of an early deployment. Block II added an improved sensor, an upgraded processor, and additional software, with a first deployment planned for 2025.
The full rate production decision is scheduled for spring 2025 to authorize the US Navy to fully outfit its carrier-based F/A-18E/F Super Hornet squadrons with IRST Block II.
F/A-18E/F Super Hornet entered fleet service in 1999, as the replacement for the F-14 Tomcat. The Super Hornet is the second major model upgrade since the inception of the F/A-18 aircraft program. The F/A-18E and F/A-18F are designed to meet the navy’s fighter escort and interdiction mission requirements.
F/A-18E/F enhancements include increased range and improved carrier suitability required for the F/A-18 to continue its key strike fighter role.