F/A -18 Infrared Search and Track (IRST)

The F/A-18 Infrared Search and Track (IRST) program is a significant initiative within the Navy's Research, Development, Test & Evaluation efforts. It focuses on developing an advanced long-wave infrared sensor system for the F/A-18E/F aircraft. The main goal is to enhance the aircraft's ability to detect, track, and engage airborne targets in environments where electronic attacks or radar denial are common. The IRST Block II plays a crucial role in maintaining air superiority by offering a passive fire-control system that operates independently of the radio frequency spectrum.

The program seeks to improve the lethality and survivability of the F/A-18E/F by developing and testing a redesigned Infrared Receiver (IRR) and processor. These upgrades aim to provide full Capabilities Development Document (CDD) capability over a larger field of regard. Additionally, there are efforts to redesign the Read-Out Integrated Circuit (ROIC) due to production sustainability issues with the current design. This redesign is anticipated to result in a more reliable configuration and potential cost savings by reducing reliance on high-cost materials.

Regarding accomplishments and planned activities, the program has been involved in Technology Development (TD) and Engineering and Manufacturing Development (EMD) phases for integrating the IRST sensor into the aircraft. The focus has been on addressing deficiencies identified during operational tests and pursuing further development for capability enhancements, including sensor improvements. There is also an emphasis on hardware and software development to address ROIC obsolescence.

The acquisition strategy for the F/A-18E/F Block II IRST involves an incremental approach to development and integration, with some overlap between development and production activities. This strategy relies on proven technology elements and aims to demonstrate manufacturing readiness for full-rate production by early FY2025. Flight testing of critical technologies began in 2019, with ongoing efforts to integrate these systems with advanced mission computer software. The program is on track for Initial Operating Capability (IOC) by late FY2024, which will provide significant advancements in out-of-band detection capabilities against sophisticated air threats.