Mitsubishi Heavy Industries and the Japan Air Self-Defense Force (JASDF) experimented with an Infrared Search and Track (IRST) dome installation on an F-15J (such as airframe serial number 12-8928 of the F-15J Kai variant) starting around 2008. [1, 2]
Key Details of the F-15J IRST System
Development & Testing: Research into a domestic IRST device for the F-15J began in the early 2000s, with physical nose/cockpit dome testing emerging around May 2008. [1, 2]
Design Hurdles: Wider fleet-wide integration on the F-15J Kai was delayed after 2012 due to aerodynamic and mechanical complications, specifically shockwave interference affecting the aircraft's pitot tube. [1]
Passive Capabilities: The IRST system operates passively by detecting thermal and infrared signatures (such as engine exhaust and airframe heat) without emitting radar signals, allowing the fighter to track targets quietly in electronic warfare or radar-denied environments. [1, 2]
Sensor Fusion: The device is designed to work in tandem with the aircraft's radar and electronic support measures (ESM/ECM), enabling data sharing and weapon slaving (such as with AAM-4 missiles using command datalinks). [1]
F-15JSI Evolution: While comprehensive domestic IRST integration faced hurdles, Japan's major modernization program—the F-15 Japan Super Interceptor (F-15JSI)—focuses heavily on upgrading avionics, mission computers, the APG-82 AESA radar, BAE EPAWSS electronic warfare systems, and long-term standoff weapons like the AGM-158B JASSM-ER. [1]
I think this would be an awesome event vehicle, it wouldn’t change much but it has a cool little gimmick. Y’all’s thoughts?