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That absence puts American fighters behind an important curve. This IRST approach can defeat radar stealth in some instances, by focusing on engine exhaust or on the friction of the aircraft through the atmosphere. As F-14 pilots will recall, long range electro-optics also offer positive identification, which confers the ability to use the plane’s missiles to their full range without creating friendly fire concerns. Best of all, IRST offers a passive way to locate and target enemy aircraft – one 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.
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Instead of modifying the Super Hornet’s 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.
First production deliveries of F/A-18 E/F IRST systems are expected in 2012, with initial operational capability anticipated in 2013.
For the spotters, the aircraft pictured above is EA-1, the first of two Lot 27 F/A-18Fs converted into flying prototypes for the EA-18G program.