OVERVIEW: The KAB-250S-E is a 250 kg-class Russian satellite-guided glide bomb that uses GLONASS-aided inertial navigation to deliver a ~120 kg high-explosive warhead with ≤ 10 m CEP at stand-off ranges of up to 40 km.

DETAILS: Developed by GNPP Region / Tactical Missiles Corporation, the KAB-250S-E (“S” = satellite guidance, “E” = export) is the all-weather counterpart to the laser-guided KAB-250LG-E. The bomb employs an INS unit updated in flight by Russia’s GLONASS constellation; once released it glides on pop-out wings and cruciform tail fins to the programmed impact point, requiring no target illumination. It was first shown at MAKS-2015 and cleared for export after state trials with RuAF Su-34s and Su-35S fighters. Compact dimensions let four KAB-250S-E fit on a standard twin-rail launcher or inside the weapons bay of the Su-57.

SPECIFICATIONS:
Parameter: Value
Guidance: GLONASS-aided INS (fire-and-forget)
Warhead: ~100 kg HE fragmentation
Length: ~3.2 m
Diameter: 255 mm
Wingspan: ~0.55 m (deployed)
Total Weight: 250 – 265 kg
Platforms: Su-30SM, Su-34, Su-35S, MiG-35, Su-57; export integration offered for Su-30/35, MiG-29/35

Range: 12 km (low-alt) – 40 km (high-alt glide)
Accuracy: ≤ 10 m CEP (typ. 3–7 m under optimal geometry)

NOTES:
IOC: 2020 (entered limited service with Russian Aerospace Forces after flight-test series 2017-2019).
Operators: Russia (in service), Algeria and India have shown interest but no publicly confirmed deliveries as of 2025.
Interesting Fact: Because it relies solely on satellite/INS guidance, KAB-250S-E can attack through cloud cover and dust storms—conditions that impede the laser-guided KAB-250LG-E.

SOURCES:
Ausairpower; Tactical Missiles Corp. (KTRV) product sheet (MAKS-2021);TASS “Russia completes trials of KAB-250S-E precision bomb” (Dec 2020);Jane’s Air-Launched Weapons - KAB-250S-E entry; Airforce Technology Russian - KAB-250 family overview; SIPRI Arms Transfers Database - search “KAB-250” exports