The Black Eagle tank (Russian: ?????? ????, Cërnyj Orël, 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. The Black Eagle has been cancelled, with all production and development halted.

The tank was based on a lengthened T-80U hull, with an extra pair of road wheels and a brand new turret. It appeared to have had very thick front armour and new-generation Kaktus explosive reactive armour on the hull and turret. The turret had a very large, box-shaped turret bustle instead of the traditional dome shape of previous Soviet and Russian main battle tanks. According to Russian reports, the Black Eagle design had abandoned the carousel-style autoloader in the fighting compartment for an autoloader mounted in the large western-style turret bustle, which incorporates a blow-out armoured ammunition compartment for crew safety, like the U.S. M1 Abrams, the German Leopard 2, British Challenger 2, French Leclerc and several other modern western tanks. The prototype had a 125 mm tank gun, but it was stated that it may have accommodated a larger 152 mm gun[4] (compared to the 120 and 125 mm-calibre guns of main battle tanks in service). There was debate about whether the Black Eagle would incorporate the Drozd or Arena (countermeasure).

Stabilizer on tank is broken.
AG1 Turret
AG2 Remote Control Weapon Systems
AG3 Commander sight