Obiekt 775

The Obiekt 775, or Object 775 (Объект 775), was a Soviet experimental missile tank built in 1964.

Obiekt 775
Type	Missile tank
Place of origin	Soviet Union
Production history
Designer	P. P. Isakov
Manufacturer	Chelyabinsk Tractor Plant
Produced	1964
Variants	Obiekt 775 Obiekt 775T
Specifications
Mass	36 metric tons
Length	6.117 m
Width	3.415 m
Height	1.74 m
Crew	2
Armour	120 mm (maximum)
Main armament	125 mm D-126 rifled missile launcher (15 "Rubin" / 22 "Bur")
Secondary armament	7.62 mm coaxial PKT machine gun
Engine	5TDF diesel engine (Object 775) 2x GTD-350 gas turbine engines (Object 775T) 515 kW (Object 775) 2x 350 hp (Object 775T)
Operational range	500 km
Maximum speed	70 km/h

The tank had an extremely low profile, with a crew of two which sat in an isolated compartment in the turret. The main armament was a 125 mm rifled missile launcher, with a maximum range of 4 km for the "Rubin" anti-tank guided missiles, and 9 km for the "Bur" surface-to-surface missiles. It had a rate of fire of 4-5 rounds/min for the "Rubin", and 8-10 rounds/min for the "Bur". Both munitions were guided by an infra-red beam. The "Rubin" anti-tank missiles were capable of penetrating 250 mm of armor at 60° at a range of 4 km.

The Obiekt 775 used the same engine and transmission from T-64 tank. The Obiekt 775T (Объект 775Т) variant used two gas turbine engines instead of the diesel engine.

The prototype tank wasn't adopted for a number of reasons. The crew had poor visibility over the battlefield, the overall complexity of the design, and the low reliability of the missile guidance system.