Ukraine's Bullet interceptor gets speed upgrade. It now has chemical accelerator to chase down Russian 500 km/h Geran-4 - Euromaidan Press
AI Analysis
Ukrainian firms General Cherry and STRIX have upgraded the 'Bullet' counter-drone system with a chemical accelerator to intercept faster, jet-powered Russian drones like the Geran-4 (Shahed-136 variant). This upgrade addresses a critical capability gap caused by Russia's increasing use of jet-propelled UAVs. The system utilizes a chemical-energy booster for rapid acceleration and improved pursuit capabilities.
Key Takeaways
- Russia is deploying jet-powered versions of the Shahed-136 (Geran-4) reaching speeds of 500 km/h, significantly faster than previous models (180 km/h).
- The 'Bullet' interceptor is being upgraded with a chemical accelerator developed by STRIX, providing a boost in speed and vertical climb.
- The accelerator is a chemical-energy device, not a jet engine, and is integrated into the Bullet's airframe for efficient fuel use.
- General Cherry and STRIX have a strategic cooperation agreement to expand counter-drone capabilities against the Shahed family.
- The upgrade involved redesigning the Bullet's fuselage and reinforcing the airframe to handle the increased stress.
Why It Matters
Russia's adoption of jet-powered drones poses a significant challenge to existing Ukrainian air defenses, necessitating rapid adaptation. This upgrade demonstrates Ukraine's ability to innovate and counter evolving drone threats, potentially maintaining a critical defensive advantage. The success of this system could influence counter-UAS development globally, particularly in response to increasing drone speeds.
Ukraine's Bullet interceptor gets speed upgrade. It now has chemical accelerator to chase down Russian 500 km/h Geran-4 - Euromaidan Press
Ukraine’s Bullet interceptor gets speed upgrade. It now has chemical accelerator to chase down Russian 500 km/h Geran-4
The accelerator burns chemical fuel rather than using jet propulsion.
05/06/2026
2 minute read
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The image shows the Bullet counter-drone interceptor designed to chase down Russia’s jet-powered Shahed and Geran-4 drones. Source: General Cherry
Ukraine’s Bullet interceptor gets speed upgrade. It now has chemical accelerator to chase down Russian 500 km/h Geran-4
Ukrainian defense companies General Cherry and STRIX have integrated a chemical accelerator into the Bullet counter-drone interceptor designed to chase down Russia's jet-powered Shahed and Geran-4 drones. The system uses a chemical-energy booster rather than jet propulsion, integrated directly into the Bullet's airframe, Militarnyi reports.
The development addresses a speed gap that opened in the drone war over the past year as Russia introduced jet-powered modifications of the Iranian-designed Shahed-136. It concerns chiefly the Geran-4 variant that flies at speeds Ukrainian electric-propulsion interceptors could not match.
The chemical booster gives Bullet a fast vertical climb and the sprint speed to close on a jet target.
Chemical, not reactive: How does booster work?
The STRIX accelerator is a chemical-energy device, not a jet engine, the company emphasized.
"This is a chemical accelerator that releases a large amount of energy during combustion," General Cherry told Militarnyi.
The chemical fuel is integrated directly into the Bullet airframe, meaning there are no components to jettison after the burn completes. The booster gives a rapid launch profile and conserves the Bullet's main battery for the pursuit and terminal phases of the intercept.
Bullet platform
General Cherry redesigned the Bullet's lower fuselage to mount the STRIX accelerator and reinforced the airframe to handle the additional structural loads of accelerated launch and pursuit.
The companies signed a strategic cooperation agreement covering defense technology, artificial intelligence, and battlefield systems development, with the stated goal of scaling counter-drone capabilities against the full Shahed family, including the jet-powered Geran-4.
Jet-Shahed escalation
Russia has progressively introduced jet-propelled modifications of its mass-produced Shahed-136 strike drones. Where the standard Shahed cruises at roughly 180 km/h on a piston engine, the Geran-4, first deployed in May 2026, runs on a Chinese-supplied Telefly turbojet engine rated at 160 kgf of thrust, reaching speeds of around 500 km/h.
"The enemy is increasingly using jet drones, and the pace of this growth forces us to act without delay," General Cherry said.