OVERVIEW: The S-13B is an unguided, 122mm air-to-ground rocket developed for penetrating reinforced concrete, runways, and bunkers. It is equipped with a heavy concrete-piercing warhead and is launched from five-tube B-13L or B-13L1 pods mounted on aircraft and helicopters.

DETAILS: Introduced by the Soviet Union in 1984, the S-13B is part of the S-13 family of rockets and uses a 41 kg concrete-penetrating warhead with selectable fuse modes (contact, short delay, or long delay). The rocket is 2.85 m long and weighs approximately 77 kg, using a solid-propellant motor to achieve a maximum range of 4 km. It is designed to penetrate up to 1 m of reinforced concrete or 6 m of soil before detonation. The rocket stabilizes in flight using deployable tail fins after launch.

Compared to earlier S-13 variants, the S-13B adds a specialized penetrator warhead and expanded fuse flexibility, allowing for deeper and more precise effects on hardened targets. It retains full compatibility with standard B-13L-type launch pods.

The S-13B is pre-programmed on the ground for the desired fuse delay based on target type. It is launched in salvos or individually by tactical aircraft or helicopters for effective runway denial or deep target neutralization.

NOTE:
IOC: 1984
Operators: Russia, Syria, Algeria, India, Angola
Platforms: Su-17, Su-20, Su-22, Su-24, Su-25, Su-27, Su-30, Su-35, MiG-23BN, MiG-27, MiG-29, Mi-24, Mi-28, Ka-29, Ka-50, Ka-52
Conflict used in: Syrian Civil War (2015–present), Russian operations in Ukraine (2022–present)

SOURCE:
Fenix Insight: https://fenix-insight.online/explosive-hazards/munitions/S-13B ; Russian Arms Catalog ; MilitaryRussia.ru ; Jane’s Air-Launched Weapons ; Topwar.ru: https://topwar.ru/131730-ne-upravlyaemye-rs-semeystva-s-13-tulumbas.html