India's First Stealth Fighter To Fly In 4 Months

While I am certainly not an aviation expert, nor a radar profile analyst; the large boxy intake manifold below the wing of the Sukhoi 30 MKI look to me like a very effective radar reflector. Unlike the retired () champion of stealth technology, the sub-sonic F117 with its clearly baffled intake manifold above the wing. Possibly buried in the shadows of this manifold are some RF absorbing material.

And the weapons design duel, continues.

Interestingly, a couple of Soviet radar experts were the first to come up with the idea of "stealth" technology, but the Body Apparatchik and the Soviet military blew it off as a mere scientific curiosity having little practical value. A short time later a Russian-speaking engineer at Lockheed's Skunk Works division spotted the abstract in a Soviet scientific journal, worked out the feasibility of the idea and then went to his bosses with it. "The rest is history," as they say.