3B11 nuclear projectile

The 3B11 nuclear projectile was a Soviet 240 mm special-purpose mortar round developed for the M240 and 2S4 Tyulpan family. Reference sources describe it as one of the 240 mm projectiles created for the system alongside high-explosive, cargo, and incendiary rounds, and note that it used the 3M15 rocket motor to extend range.

3B11 nuclear projectile, 240 mm rocket-assisted nuclear projectile, Munitions

Image source: Боеприпасник - 240 - 3B11

Profile

Origin: Soviet Union
Built by: Soviet defense industry
Type: 240 mm rocket-assisted nuclear projectile

munitionsnuclearartillery mortar soviet

Specifications

Caliber: 240 mm
Role: Nuclear special-purpose mortar projectile
Propulsion: Rocket-assisted with a 3M15 motor
Compatible systems: M240 and 2S4 Tyulpan family
Family context: One of the Soviet 240 mm special-purpose projectile types also including high-explosive, cargo, and incendiary rounds

Service And Conflict Use

Service History

Used by: Soviet Armed Forces

Firing Weapons

Firing weapon

Weapon type

Firing evidence

240 mm self-propelled heavy mortar

The 3B11 was one of the Soviet 240 mm special-purpose projectiles intended for the 2S4 Tyulpan and related 240 mm mortar systems.

Sources: Soviet 3O8 240 mm rocket-assisted cargo projectiles in Syria, This Russian 'Big Gun' Only Had One Purpose: To Destroy a City

3B11 nuclear projectile Images

3B11 nuclear projectile, 240 mm rocket-assisted nuclear projectile, Munitions - view 1 — Source: Боеприпасник - 240 - 3B11

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Sources

Soviet 3O8 240 mm rocket-assisted cargo projectiles in SyriaPublisher: Armament Research Services | Note: Supports background context for the Soviet 240 mm special-purpose projectile family and identifies the 3B11 nuclear projectile as one of the types using the 3M15 rocket motor. | Accessed: 2026-06-23 This Russian 'Big Gun' Only Had One Purpose: To Destroy a CityPublisher: The National Interest | Note: Supports the 2S4 Tyulpan family context and the existence of a nuclear 3B11 shell for the 240 mm mortar system. | Accessed: 2026-06-23 Боеприпасник - 240 - 3B11Publisher: soviet-ammo.ucoz.ru | Note: Image provenance for the projectile photo used on this catalog page. | Accessed: 2026-06-23 3B11 nuclear projectilePublisher: Armament Research Services | Note: Supports the relationship between the 3B11 nuclear projectile and the 2S4 Tyulpan / M240 family as a 240 mm special-purpose round. | Accessed: 2026-06-23