IRST: B-2, ICU
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The F/A-18 E/F Super Hornet Block IIs are just beginning to enter service, with significantly improved AN/APG-79 AESA radars and other electronic upgrades. Recent years have seen another spreading improvement within global fighter fleets, however: Infa-Red Search & Track (IRST) systems that provide long range thermal imaging. Not only can this approach defeat radar stealth by focusing on (for instance) the F-35’s huge single engine and its unshielded exhaust – it also offers a passive way to locate and target enemy aircraft that won’t trigger radar warning receivers. When coupled with medium-range IR missiles like some Russian AA-10 variants, France’s MICA, or even future versions of AMRAAM NCADE, an IRST system offers a fighter both an extra set of eyes and a stealthy air-air combat weapon.

F/A-18F w. tanks
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Retrofits into existing aircraft can be tricky, but Boeing has undertaken an RFI selection process and tapped Lockheed Martin’s Missiles and Fire Control division to supply up to 150 IRST systems for F/A-18 E/F Super Hornet Block II aircraft. Boeing and Lockheed Martin will invest more than $10 million of their own money on a risk reduction demonstration, with U.S. Navy participation. They expect to receive a US Navy IRST development contract in the summer of 2008, with a total value of over $500 million through the development and production phases of the program.

Instead of modifying the airframe’s structure or wiring, the partners will be taking an unusual route: modifying a 480 gallon centerline fuel tank to carry 330 gallons of fuel + the IRST system. This approach would also allow refits to existing Super Hornets, and indeed to all “teen series” fighters in the US arsenal, once software integration is performed for each aircraft type. The drawback to this approach is that a centerline tank with IRST needs to stay on the airplane in combat, compromising aerodynamic performance somewhat. First production deliveries of F/A-18 E/F IRST systems are expected in 2012, with initial operational capability anticipated in 2013. Boeing release.

Tag: IRSTpod