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Bumbar
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Bumbar
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The Bumbar (from Serbian: бумбар, lit. 'bumblebee') is a Serbian short-range portable anti-tank missile system.

Key Information

Description

[edit]

The Bumbar is a wire-guided, man-portable, short-ranged missile system for use against ground targets. The missile has a soft launch capability - the main motor firing after the missile has left the launcher, which allows for the missile to be fired from confined spaces, which is a necessity in urban warfare. During its flight, the rocket is maneuvered by unique system of thrust vectoring. The missile is propelled by two main rocket motor exhaust vanes located at mid body. As the missile rotates the launch units send signals commanding the correction by one of the two vanes to move against the missile motors thrust. For example, if the missile has to move to the left, the right thrust vector vane will actuate at the correct time. It is protected against electronic countermeasures through the "use of CCD matrix sensors, fast image-processing computer and robust tracer recognition algorithm."[1]

Its general design is similar to the French/Canadian Eryx MBDA anti-tank missile[2] and has similar specifications.[3] However MBDA has never supplied Serbia or the former Yugoslavia with technical or engineering information regarding the Eryx.[1][3][relevant?]

General information

[edit]
  • Time of flight to target at 600 m: 4.6 s
  • Warhead penetration: over 1000 mm RHA behind ERA
  • Range: up to 600 m
  • Weapon length in travelling position: 1164 mm
  • Capable of firing from confined spaces
  • Night firing capability
  • Mass of missile in transporting/launching tube: 14 kg
  • Secondary warhead caliber: 55 mm
  • LC axis superelevation angle: 10°

References

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Bumbar

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The Bumbar (Serbian Cyrillic: Бумбар, meaning "") is a man-portable, short-range (ATGM) system developed and produced in for engaging armored vehicles in urban and confined environments. Initiated in 2005 by the Serbian Army in collaboration with the Military Technical Institute in Belgrade, the Bumbar was designed as a lightweight replacement for outdated anti-tank grenade launchers, emphasizing portability for special forces operations. Manufactured by the Krušik company in Valjevo, the system entered service with the Serbian Armed Forces in 2012 and has since been showcased at international defense exhibitions, such as the Partner 2015 fair in Belgrade. Key features include semi-automatic command to line-of-sight (SACLOS) guidance via a wire link, enabling day/night and all-weather operation with a hit probability of 90% against moving targets, along with anti-jamming protections through differential image processing. The employs a shaped-charge warhead that penetrates over 1000 mm of rolled homogeneous armor (RHA) behind explosive reactive armor (ERA), with a soft-launch mechanism for safe firing in enclosed spaces. Specifications encompass a total system weight of 18 kg (including the 10 kg ), a length of about 1.2 m, launch speed of 18 m/s accelerating to a maximum of 245 m/s, and an effective range from 75 m to 600 m—potentially extendable to 1 km with planned beam-riding upgrades. It can be shoulder-fired or mounted on a 4 kg and light vehicles, with preparation time under 6 seconds. As of 2025, it remains in service primarily with the .

Development

Origins and requirements

The development of the Bumbar anti-tank guided missile system originated with conceptual work in the mid-1990s within the then-federal Republic of Yugoslavia, spearheaded by the (VTI) in , with formal initiation in 2005 by the in collaboration with the VTI to address the need for a modern, man-portable weapon capable of defeating contemporary armored vehicles in urban and confined spaces. This initiative was driven by the obsolescence of existing anti-tank assets, such as unguided grenade launchers, which proved inadequate against tanks equipped with explosive reactive armor (ERA) and composite protections during the Yugoslav conflicts of the early . Key requirements emphasized portability and rapid deployment for and , mandating a total system weight of approximately 18 kg (including launcher and ) to ensure single-soldier operability without compromising mobility in tactical environments. The design prioritized a short of 50–600 meters, suitable for close-quarters engagements, with a minimum firing distance of 50 meters to allow safe launch from enclosed positions like buildings or vehicles. Guidance specifications called for a semi-automatic command to line-of-sight (SACLOS) system using wire transmission, incorporating (CCD) optics for day/night operation and resistance to electronic countermeasures. The requirements focused on a () configuration to sequentially defeat and underlying armor, achieving penetration of at least 1,000 mm of rolled homogeneous armor (RHA) equivalent behind . Additional stipulations included a soft-launch mechanism for reduced backblast, enabling firing from confined spaces with minimal , and overall dimensions of 136 mm and 900 mm length to balance lethality with transportability. These parameters reflected Serbia's post-embargo push for indigenous defense production, with development resuming after interruptions from sanctions, leading to initial tests in 2003 and serial production by Krušik starting in 2011.

Prototyping and production

The development of the Bumbar anti-tank guided missile system began in the mid-1990s under the auspices of the (VTI) in , as part of efforts to create a modern, portable short-range anti-armor weapon to replace outdated systems. The project faced interruptions due to economic and political challenges following the , but resumed with renewed focus in the early 2000s. Prototyping efforts culminated in the first test launches of Bumbar missiles in 2003, marking the initial validation of the system's wire-guided, semi-automatic command to (SACLOS) design and tandem () warhead. By 2004, the VTI had completed the core development phase, incorporating indigenous components such as the guidance electronics and propulsion system to ensure self-reliance in production. These prototypes demonstrated key capabilities, including a soft-launch feature for confined-space firing and a maximum range of approximately 600 meters in early iterations, with subsequent refinements extending operational parameters. Serial production commenced in 2011 at Krušik , Serbia's primary arms manufacturing facility, following successful state acceptance trials completed in 2013. The system entered operational service with the in 2012, after final live-fire tests confirmed reliability against armored targets, including those equipped with explosive reactive armor (ERA). Production emphasized modularity, with the missile weighing 10 kg and the complete firing unit totaling around 18 kg, enabling portability. An export variant, marketed as "Bumble Bee," has been promoted internationally since 2012, though specific production volumes remain classified.

Design and components

Missile structure

The Bumbar missile features a compact, man-portable design with a length of 900 mm and a diameter of 136 mm, excluding stabilizers, enabling easy transport and deployment by infantry units. The missile weighs approximately 10 kg. The total system mass is around 18 kg, including the TPK, firing post, and tripod. Constructed from lightweight modern materials such as non-metallic composites, plastics, and light metal alloys, the structure emphasizes reduced weight while maintaining structural integrity for soft-launch operations from confined spaces. Externally, the incorporates four foldable, curved tail stabilizers for aerodynamic stability and two folding oblique nozzles serving as vector vanes for maneuverability during flight. The TPK provides hermetic sealing, protecting the from environmental factors and facilitating in some configurations. Internally, the is divided into distinct sections: the front compartment houses the thermal battery for , a for angular measurements, and the block of (BE) comprising seven integrated blocks on three polymer-coated printed circuit boards tailored to fit the sectional . This BE is distributed across compartments, with elements like BE3 on the gyroscope board, BE6 near the main warhead's safe-and-arming mechanism, and BE7 on circular boards in the wing section for control. The section features a tandem hollow-charge configuration, with an auxiliary (55 mm ) forward and the main shaped-charge (136 mm , including a 30 g lead precursor and 2.6 kg main charge) positioned centrally, both equipped with safe-and-arming mechanisms (SAM1 and SAM2) for sequential detonation. is provided by a solid- rocket motor with dual phases: an initial ejection charge (100 g) for low-velocity at 18 m/s, followed by a sustainer motor (2 kg charge) accelerating the to 250 m/s. The sustainer employs double-base propellants adapted from earlier designs, with thrust vector control via thrust vector vanes. Rear sections include the micro-cable spool for wire guidance and components, such as 77 LEDs operating at 880 nm for tracking.

Launcher and firing mechanisms

The Bumbar anti-tank guided missile system employs a man-portable launcher designed for use, consisting of a lightweight transport and launch container (TPK) made from sealed for durability and ease of transport. The TPK measures approximately 1.164 meters in length and weighs about 2 kg, featuring end caps with soft material nozzles to absorb launch and external connectors for attaching sighting equipment or a . The overall system mass is around 18 kg, including the 10 kg , 2 kg TPK, 4 kg firing post, and optional 2 kg , enabling shoulder-fired operation from standing or kneeling positions or ground mounting for prone firing. Firing mechanisms incorporate a semi-automatic command to line-of-sight (SACLOS) integrated into the 4 kg firing post, which includes an optical sighting device, guidance electronics, and a thin wire spool for command transmission. The operator prepares the system in under 6 seconds by removing protective caps and acquiring the target through the sight, which supports day and night operations via an optional thermal imager. Upon trigger activation, a ejects the 136 mm diameter from the TPK using a small boost-phase motor in the tail section, propelled by two oblique nozzles to achieve an initial velocity of 18 m/s while imparting stabilizing spin. The feature, powered by approximately 100 g of fuel, allows the to clear the launcher before the main sustain-phase motor ignites outside the tube, reaching a maximum speed of 245–250 m/s and enabling safe firing from confined spaces such as building interiors or vehicles without excessive back-blast. Guidance commands are issued manually by the operator tracking an tracer on the via the sighting system, which calculates angular deviations and transmits corrective signals to vector vanes on the 's control surfaces. A CCD camera in the firing post enhances resistance to electronic jamming by providing real-time visual feedback during flight. The system supports engagement ranges from 75 m to 600 m, with later variants extending to 1 km using laser for improved precision.

Guidance and performance

Guidance system

The Bumbar anti-tank guided missile (ATGM) employs a semi-automatic command to line-of-sight (SACLOS) guidance system, which requires the operator to maintain visual contact with the target throughout the missile's flight while the system automatically adjusts the missile's trajectory. This wire-guided mechanism transmits steering commands from the firing post to the via a thin, unspooling wire, ensuring reliable control without reliance on radio signals that could be jammed. The operator uses an integrated sighting device on the 4 kg firing post to track both the target and the 's ; the guidance computer then computes angular deviations and issues corrective signals at a high frequency to keep the aligned with the . This setup supports engagement ranges from a minimum of 75 m to 600 m in standard configuration. Key components include a (CCD) camera in the sighting system for enhanced and a dedicated guidance computer that provides anti-jamming protection through sequential frame discrimination, distinguishing the missile's signal from potential interference. The system enables all-weather and day/night operations via thermal imaging integration in the sight, with the soft-launch feature allowing initial ejection from the tube before full motor ignition to reduce backblast hazards during guidance initiation. An optional upgrade incorporates beam-riding guidance to extend the effective range to 1 km, where the operator directs a beam at the target, and the missile's rear sensors follow the modulated beam for terminal homing; however, this variant remains in development and is not part of the baseline system. The design draws conceptual parallels to systems like the Eryx, emphasizing compact, man-portable wire guidance for infantry anti-armor roles.

Warhead and penetration capabilities

The Bumbar employs a () , consisting of a precursor charge followed by a main , specifically engineered to counter explosive reactive armor () on modern armored . The precursor charge detonates the upon impact, neutralizing its protective effect, while the main charge then forms a high-velocity metal penetrator to breach the underlying armor. This design enhances the missile's effectiveness against tanks and other heavily protected targets, providing versatility in engaging composite or reactive armored fighting . The 's penetration capability exceeds 1,000 mm of rolled homogeneous armor (RHA) when positioned behind , enabling it to defeat a wide range of contemporary main battle tanks and fighting vehicles. This performance is achieved through a 136 mm configuration, which balances destructive power with the system's portable, man-launched format. In addition to anti-armor roles, the warhead supports limited use against fortified structures, though its primary focus remains armored threats.

Operational deployment

Introduction to service

The Bumbar short-range system entered operational service with the in 2012, marking the introduction of a domestically developed man-portable designed to engage armored vehicles and fortified positions at close range. Produced by the Serbian company Krušik Valjevo under the oversight of the , the system was procured to modernize infantry anti-tank capabilities, replacing outdated equipment with a wire-guided solution offering improved accuracy and portability. The introduction coincided with announcements from Serbian defense officials emphasizing the Bumbar's dual role in national defense and potential exports, with pricing structured differently for domestic acquisition and international sales. Initial deployment focused on integrating the lightweight, tripod-mounted launchers into ground units, enabling rapid setup and firing by small teams in various terrains. By mid-2012, the system had begun fielding within the , enhancing tactical flexibility for anti-armor operations without reliance on foreign suppliers. Post-introduction, the Bumbar gained visibility at international defense exhibitions, such as the Partner 2015 arms fair in , where it demonstrated its operational readiness and attracted interest from foreign delegations, underscoring Serbia's advancements in indigenous munitions production.

Known operators

The Bumbar system is operated by the , which adopted it into service in 2012 to replace older portable anti-tank systems. The system equips infantry units for engaging armored vehicles and fortifications at short ranges. An export variant, designated "Bumble Bee," has been marketed internationally since the early , featuring identical performance specifications to the domestic version. However, no verified deliveries or operational use by other nations have been documented as of 2025.
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