Black Eagle (tank) - Wikipedia
The Black Eagle tank (Russian: Чёрный Орёл, Čërnyj Orël, Chyornyy Oryol or Object 640), was a presumed prototype main battle tank produced in the Russian Federation.It was thought to have been developed by the KBTM design bureau in Omsk in the late 1990s. A production version of this tank has never been publicly demonstrated.