Being a SST (Super Sonic Transport) lover, the Tupolev Tu-244 has always interested me as an quirky project, with its massive wings and the concept to create a SST with cryogenic fuels! It was planned that one of these would have been able to carry around 311 passengers at speeds excess MACH 2.0 ( 1333.48 knots ) . My illustration of the Tu-244 in flight - Such a shame these were never to be Unfortunately the project was cancelled in 1993 (having drafts begun in 1979 for this project)... It was planned for the airframe of the Tu-244 to be made out of Titanium-composite materials to withstand the heating effects of such great speeds (from merely the friction between the aircraft and the air) . To achieve these speeds, an hydrogen powered version of the Kuznetsov NK-321 was planned to be used to be able to use the cryogenic fuels. These engines are also capable of after-burning. It's always such a shame to see such a cool project being washed down the sink, as this was develope