XM291
| XM291 | |
|---|---|
| Type | Tank gun |
| Place of origin | United States |
| Specifications | |
| Caliber | 140 mm / 120 mm |
The XM291 Advanced Tank Cannon (ATAC) is an American experimental 120 or 140 mm smoothbore tank cannon. It started development in 1991 as a way to substantially increase the performance of tank cannons against the perceived threat of future Soviet main battle tanks. It can be used in two configurations, one in 140 mm and one in 120 mm electrothermal-chemical technology (ETC).[1] The XM291 was the first cannon to incorporate a system that counteracted the vibrations in the barrel caused by the tank moving over terrain, using the dynamically tuned shroud (DTS).[2]
While it was originally developed for the
Block III tank, development of the Block III was halted while the XM291 saw continuous development and was used on other testbeds such as the CATTB and the M1 Thumper.[1][3]
Ammunition
| Designation | Munition type | Calibre | Projectile mass | Muzzle velocity |
|---|---|---|---|---|
| XM866 | Kinetic energy penetrator (KE) | 120 mm | 5.4 kg | 1675 m/s |
| XM831 | High-explosive anti-tank (HEAT) | 120 mm | 13.6 kg | 1145 m/s |
Specifications
- XM291 (120 mm)[1]
- Barrel length: 6,731 mm / 265 in (56 calibre)
- Weight (total): 1,451 kg / 3,200 lb
- Weight (breech): 590 kg / 1,300 lb
See also
- XM360, American electrothermal-chemical tank gun
References
- ^ ISBN 978-0-16-043658-1.
- ^ Littlefield, Andrew G.; Kathe, Eric L. GUN BARREL VIBRATION ABSORBERS FOR MEDIUM AND LARGE CALIBER SYSTEMS (PDF). Archived from the original (PDF) on 2019-08-10.
- ISBN 1855322838.
- ^ PROCEEDINGS OF THE SIXTH U.S. ARMY SYMPOSIUM ON GUN DYNAMICS VOLUME I OF II (PDF). 1990. pp. 236โ237. Archived from the original (PDF) on 2016-03-04.