XM57 characteristics
Firepower
- Damage
- 630hp
- Penetration
- 270mm
- DPM
- 1,989
- Reload
- 19.00s
- Rate of fire
- 3.16/min
- Aim time
- 3.00s
- Accuracy
- 0.430m
- Dispersion moving
- 0.260
- Shell velocity
- 900m/s
- Caliber
- 155mm
- Gun depression
- 15°
- Gun elevation
- 7°
Mobility
- Top speed
- 24km/h
- Reverse speed
- 12km/h
- Engine power
- 810hp
- Power/weight
- 13.5hp/t
- Hull traverse
- 22.0°/s
- Turret traverse
- 22.0°/s
- Hard terrain
- 1.40
- Medium terrain
- 1.60
- Soft terrain
- 3.20
Survivability
- Hit points
- 1,040hp
- Hull armor (front)
- 121mm
- Turret armor (front)
- 305mm
- Fire chance
- 0%
- Ammo rack HP
- 240hp
- Track HP
- 200hp
Spotting & other
- View range
- 370m
- Signal range
- 745m
- Camo (still)
- 0.3%
- Camo (moving)
- 0.2%
- Weight
- 60.0t
XM57 historical reference
By the mid-1950s, the idea of turret-mounting a partially rotating gun had emerged. The XM57 was developed according to this principle. A special feature was that the crew was located not in the turret, but in a cabin behind it, which meant that the turret's dimensions could be reduced. Loading was fully automated. The gunner would have aimed using cameras in the turret, but a periscopic rotating reticle was also planned for the top of the cabin. The commander's cupola would have been mounted with a remote-controlled AA gun in order to tackle airborne targets. The project existed only in blueprints.