KV-90 [USSR, HT-9]
At the beginning of 1942, during the successful counteroffensive near Moscow, several Soviet design bureaus resumed project work on super-heavy tanks. One of the proposals was a tank project with the provisional designation KV-90, weighing 90–100 tons, which extensively used components and assemblies from production KV tanks and other vehicles.
With frontal armor of 250 mm, the tank was armed with a twin mount of 122 mm and 45 mm guns; an alternative variant featured 130 mm and 45 mm guns. As a powerplant, it was planned to use the prospective DD-1 diesel engine with an output of 1,000 hp. According to plans, such vehicles were intended to break through German defenses along the main axes of Red Army attacks; however, the concept of tank employment shifted toward more mobile vehicles of smaller size and mass.
