FAB UMPK

Russia's cheap, mass-produced glide-bomb conversion kit — turned Soviet-era free-fall bombs into standoff weapons and became the defining Russian strike capability of the war in Ukraine.

Overview

The UMPK (УМПК — Unifitsirovannyi Modul Planirovaniya i Korrektsii, “Unified Gliding and Correction Module”) is an add-on wing and guidance kit that transforms thousands of Soviet-era unguided bombs into satellite-guided standoff glide bombs. First fielded in early 2023, it enabled Russian tactical aircraft to strike fixed ground targets from outside the reach of most Ukrainian short- and medium-range air defences, at a fraction of the cost of a cruise missile. The kit has been fitted to FAB-250, FAB-500, FAB-1500, FAB-3000, ODAB thermobaric and RBK-500 cluster bombs, spawning a family that now includes extended-range and jet-powered derivatives.

Development

NPO Bazalt proposed a modular glide-kit family as early as 2002, but the idea languished unfunded for two decades. It was hastily revived after Russia’s 2022 invasion consumed large numbers of precision missiles and Ukrainian air defences made low-level unguided bombing unsustainable. The first photographs of an operational UMPK appeared in January 2023, and Russia’s Ministry of Defence publicly acknowledged the kit in May 2023 after it had already been employed in combat for several weeks. According to Wikipedia, the Tactical Missiles Corporation (KTRV) is the developer and producer, though the manufacturer has never been officially named. Production has been scaled continuously; Ukrainian intelligence quoted by European Security & Defence reported that Russia planned up to 120 000 glide bombs in 2025 alone.

Design & capabilities

The UMPK is a bolt-on hybrid of pop-out wings, tail surfaces and a satellite-navigation guidance unit. The core is a Kometa-M jam-resistant GNSS receiver with a controlled reception pattern antenna (CRPA) that evolved from four to as many as 16 elements, together with a SMART navigation controller and an inertial navigation system (INS) backup. The wings deploy after release, giving the bomb a glide ratio that pushes the launch aircraft away from the target — typically 35–50 km for early FAB-500 kits, increasing to 95–100 km with the extended-wing UMPK-PD and up to 200 km for jet-powered versions. Unlike a cruise missile, the bomb has no engine in its baseline form, so it coasts at high subsonic speed. Guidance relies on pre-briefed coordinates; the system cannot engage moving targets on its own. Detailed component analysis, including the Kometa receiver and SMART controller, was published by Conflict Armament Research in late 2023, as cited in European Security & Defence.

Variants

The UMPK family encompasses multiple bomb-body adaptions and several purpose-built glide munitions:

• Baseline UMPK: fits FAB-250, FAB-500 M-62 (the most common), FAB-1500 M-54, FAB-3000 M-54, ODAB-500/1500 thermobaric and RBK-500 cluster bombs. Range ~50–70 km depending on altitude and bomb weight, according to Wikipedia and JAPCC.
• UMPK-PD (“povyshennoy dal'nosti” — extended range): features longer or twin wings, aerodynamic fairings and the heat-resistant FAB-500T bomb body. Range 95–100 km; first used in combat in May 2025.
• Jet-powered UMPK: a baseline UMPK fitted with a Chinese commercial Swiwin SW800Pro-Y turbojet (~180 lb thrust), first recorded in October 2025. Reportedly reaches 130–200 km.
• UMPB D-30SN: a purpose-built glide munition roughly equivalent to the U.S. Small Diameter Bomb, based on the FAB-250 and capable of ~90 km range. Also launched from Tornado-S MLRS and the S-70 Okhotnik drone.
• UMPB-5 and UMPB-5R: longer-range purpose-built bombs (unpowered ~160 km; jet-powered ~200 km), disclosed in late 2025 and covered by United24 Media.

Combat record / operational use

The UMPK made its combat debut in early 2023 and by late March of that year Ukraine’s air force spokesman warned that 500 kg winged bombs were arriving daily from outside air-defence range. Use escalated dramatically: about 40 000 glide bombs were dropped in 2024 and 44 000 in the first 11 months of 2025, with a single-month record of 5 328 in October 2025, according to Ukraine’s Ministry of Defence as reported by Gwara Media.

Operationally, the weapon proved decisive in static battles. It blunted the Ukrainian summer 2023 counteroffensive in Zaporizhzhia and was central to the siege of Avdiivka, where it averaged 60–80 strikes per day before the town fell in February 2024. The FAB-3000/UMPK appeared over Kharkiv in June 2024 and was officially shown by the Russian Ministry of Defence that July. From May–June 2025 the extended-range UMPK-PD struck Kharkiv from ~95 km, and from October 2025 jet-powered UMPK and UMPB-5R variants hit Poltava and Lozova at 100–200 km, as detailed by The War Zone and FDD’s Long War Journal. Ukrainian intelligence also confirmed a 193 km test flight and serial production of the powered bombs, according to The Aviationist.

Ukrainian countermeasures include GNSS jamming that degrades accuracy, Patriot ambushes on launch aircraft, drone strikes on airfields, and experimental AI-driven interceptors that claimed over 100 glide-bomb kills in late 2025.

Advantages

• Extreme cost-effectiveness: a $20 000–25 000 kit turns a cheap surplus bomb into a standoff weapon, letting Russia deliver more than 130 precision-like strikes a day — a volume no missile stockpile could match.
• Standoff survivability: aircraft release the bomb well behind the line of contact; the baseline kit already keeps Su-34s outside most short-range air defences.
• Hard to intercept: small radar cross-section, no thermal signature and high subsonic speed make engagement impractical for MANPADS and economically unsustainable for high-end SAMs.
• Heavy warhead compensates for modest accuracy: even a near-miss from a FAB-1500 or FAB-3000 destroys fortifications and produces severe concussion; a single hit can collapse a multi-storey building.
• Rapid iteration: jam-resistant antenna arrays, aerodynamic refinements and the addition of a cheap commercial turbojet have pushed range from 60 km to over 200 km in three years.

Drawbacks / limitations

• GNSS vulnerability: jamming and spoofing force reliance on INS, causing miss-distances to balloon. A Russian milblogger leak quoted by JAPCC suggested that up to 16 bombs were needed to destroy a target under strong jamming.
• Limited precision: the FAB-3000’s claimed 10 m CEP is assessed at ~30 m by FDD’s Long War Journal; the system is a “reasonable sufficiency” weapon, not a true PGM.
• Crude construction: civilian-grade electronics and hasty assembly produce malfunctions; wings that fail to deploy are “a standard occurrence,” and dozens of bombs have fallen on Russian territory.
• Range-altitude trade-off: to achieve maximum glide range, aircraft must climb to 10–12 km, where they become vulnerable to long-range SAMs such as Patriot. Several Su-34s have been lost in such ambushes.
• Dependence on imported components: the jet-powered variants use Chinese commercial turbojets, creating a sanctionable supply-chain bottleneck.

Counterparts

• Storm Shadow / SCALP-EG (UK/France)
• Kh-101 (Russia)

Outlook

The UMPK has become the most prolific Russian strike weapon of the war and is now migrating from a frontline siege tool to a cheap theatre-attack system. Production targets of 75 000–120 000 kits for 2025, a 200 km jet-powered bomb already in use, and a 400 km development programme reported by Militarnyi signal that Russia intends to hold the whole of Ukraine under glide-bomb threat without expending cruise missiles. NATO analysis treats the cost-imposition dilemma as structural: effective counters must attack the kill chain — jamming, cheap interceptors, and strikes on carriers and airfields — rather than relying on high-end SAMs alone. The concept has already proliferated; Ukraine fields reverse-engineered kits and China has exhibited similar designs.

Key specifications

Sources

1. Wikipedia — UMPK (bomb kit). https://en.wikipedia.org/wiki/UMPK_%28bomb_kit%29
2. JAPCC — Countering Russia’s Glide Bomb Warfare in Ukraine. https://www.japcc.org/articles/countering-russias-glide-bomb-warfare-in-ukraine/
3. European Security & Defence — Blood and dust: The rise of Russia’s glide bombs. https://euro-sd.com/2025/07/articles/armament/45382/blood-and-dust-the-rise-of-russias-glide-bombs/
4. The War Zone — Russia Is Now Launching Jet-Powered Glide Bombs At Ukraine. https://www.twz.com/air/russia-is-now-launching-powered-glide-bombs-at-ukraine
5. FDD’s Long War Journal — Russia deploys new, longer-range bombs in war against Ukraine. https://www.fdd.org/analysis/2025/10/31/russia-deploys-new-longer-range-bombs-in-war-against-ukraine/
6. FDD’s Long War Journal — Analysis: What we know about Russia’s new 3-ton glide bomb. https://www.longwarjournal.org/archives/2024/07/analysis-what-we-know-about-russias-new-3-ton-glide-bomb.php
7. Militarnyi — Defense Intelligence: Russia is developing a guided bomb with a range of up to 400 km. https://militarnyi.com/en/news/defense-intelligence-russia-is-developing-a-guided-bomb-with-a-range-of-up-to-400-km/
8. Gwara Media — Defence Ministry: Russia dropped 44,000 glide bombs at Ukraine during 2025. https://gwaramedia.com/en/defence-ministry-russia-dropped-44000-glide-bombs-at-ukraine-during-2025/
9. The Aviationist — Russia’s New Jet-Powered Glide Bomb Emerges in Ukraine. https://theaviationist.com/2025/10/25/russia-new-jet-powered-glide-bomb/
10. United24 Media — Russia Unveils Extended-Range UMPB-5 Glide Bomb for Use Against Ukraine. https://united24media.com/latest-news/russia-unveils-extended-range-umpb-5-glide-bomb-for-use-against-ukraine-15735