Thanks to the Headmaster for helping me with the pix. Yes siege it is the 1.42/1.44/MFI Tech Demonstrator and Flatpak is the Nato designator for the 1.44, Foxglove for the 1.42. The 1.42 was in response to the US ATF, and after several years developement was declared the follow on aircraft to the Su-27 in 1986. The 1.44 was the test airframes, which my info say there were two, the first taxi test in 1994, but due to money woes they languished until officially introduced in 1999. First flight was 29/Feb/2000, and at least two additional flights in 2001. Powered by a pair of Saturn AL-41F engines of 40,000 lbs thrust. The talk is the engines were returned to Saturn because of inability to pay. This aircraft was earlier disignated as the Mig 35, but that designation was withdrawn. My sincere apologies for the Mig 21 tech demonstrator with the canards and inlets it was likely a testbed for the testbed. This was the aircraft I had mistakenly believed was a delta winged concept for Pak Fa. The internet is a far superior source for cutting edge tech, the poor old Air Force magazine often being discarded like so much old rubbish by clean little women. Until the ice storm/thunder storm and the current goes off!