Infrared Search and Track (IRST)

The Infrared Search and Track (IRST) program, managed by the Navy, aims to enhance the capabilities of the F/A-18E/F aircraft through advanced sensor technology. The primary objective is to integrate a long-wave infrared sensor that provides a passive, out-of-band fire control system. This system is designed to detect, track, and engage airborne targets at long range, even in environments where electronic attacks are prevalent or radar systems are compromised. The IRST Block II serves as a critical component for air-to-air combat scenarios, enabling the F/A-18E/F to maintain competitiveness against peer adversaries by supporting organic passive kill-chains.

The program's goals include the procurement and integration of IRST Block II B-Kits, which are essential for achieving full-rate production. These kits will be installed on F/A-18E/F aircraft to improve their lethality and survivability by providing an alternative fire-control solution that does not rely on radio frequency emissions. This capability is crucial for maintaining operational effectiveness in contested environments as outlined in the National Defense Strategy. Additionally, the program supports the guidance of beyond-visual-range missiles such as AIM-120C/D and AIM-9X Block II.

Further objectives involve critical software modernization efforts to ensure system security and address evolving adversary countermeasures. The program also emphasizes support equipment to establish Intermediate-Level and Depot-Level Maintenance capabilities for the IRST system. This initiative aims to reduce reliance on Original Equipment Manufacturers for maintenance and repair, thereby enhancing operational readiness and reducing repair cycle times. By building organic maintenance capacity, the program seeks to prevent increased costs associated with spares and maintain high levels of operational readiness for forward-deployed assets.

The IRST program represents an evolutionary acquisition effort by the Navy, focusing on incremental development and integration of advanced sensor technologies. With a refined contracting strategy and updated Acquisition Program Baseline, it is poised to deliver critical detection and tracking capabilities against advanced air threats. The anticipated Initial Operational Capability (IOC) for IRST Block II is set for Q4 FY2024, aligning with strategic objectives to enhance air combat effectiveness in complex threat environments.