Harop

Overview

The Harop (sometimes spelled Harpy 2 in some contexts, though IAI distinguishes it as a separate system from the earlier Harpy) is a large loitering munition — also termed an autonomous attack system — designed and manufactured by IAI's MBT Missile Division. It combines two guidance modes: passive radar homing for the suppression of enemy air defences (SEAD) role, and electro-optical terminal guidance for attacks against targets that are not emitting radar signals.

The Harop is significantly larger and more capable than tactical loitering munitions like the Lancet-3 or Switchblade 600. With a 135 kg total weight, 23 kg warhead, 6-hour endurance, and 1,000 km ferry range, it operates at the strategic level — capable of penetrating hundreds of kilometres into adversary territory to hunt radar emitters.

Design

Configuration: The Harop is a jet-powered flying-wing design without a separate tail unit. The delta-wing planform and jet propulsion give it substantially higher speed than propeller-driven systems — up to 417 km/h maximum, with a cruise speed around 185 km/h for loiter. The jet engine provides higher speed for terminal attack and makes it harder to engage with close-range anti-aircraft weapons that rely on tracking slow-moving propeller aircraft.

Propulsion: A small turbojet engine. The absence of a piston engine eliminates the acoustic signature that makes systems like the Shahed-136 ("moped") audible at range — a stealth advantage in the terminal attack phase.

Launch: From a containerised rail launcher mounted on a vehicle or ship. IAI offers vehicle-mounted multi-round launchers, enabling batteries of Harops to be deployed from standard military logistics vehicles. The launch container protects the munitions during transit and provides weatherproof storage.

Guidance Modes

The Harop's dual-mode guidance is its defining feature:

Mode 1 — Passive radar homing (SEAD): The Harop's seeker passively listens for radar emissions. If an adversary air defence radar is active, the Harop can home on the emission source autonomously, without any further operator input. This creates a strategic dilemma for air defence commanders: activating radars to detect and engage threats also immediately marks the radar as a Harop target. The result is that radar operators often choose to leave radars off, which negates the air defence network's ability to track and engage threats — achieving SEAD effect without the Harop even detonating.

Mode 2 — Electro-optical terminal guidance: When targets are not emitting radar, the operator observes video from the Harop's camera and designates targets for attack. This allows engagement of vehicles, logistics nodes, or other fixed infrastructure that does not emit detectable signals.

GPS mid-course: The munition uses GPS for navigation from launch to the target area, with the operator able to programme waypoints and receive telemetry during flight.

Wave-off: Like the Switchblade, the Harop can abort an attack and continue loitering for re-engagement. This is unusual for larger anti-radiation systems and increases tactical flexibility.

Harop vs. Earlier Harpy

IAI's earlier Harpy is often compared to or confused with the Harop. Key differences:

The Harpy is a pure anti-radiation weapon; once launched toward a radar emitter, it attacks autonomously with no human control in the terminal phase. The Harop adds operator-in-the-loop EO guidance, wave-off capability, and multi-role function.

Nagorno-Karabakh (2020)

The Harop's most consequential documented employment was Azerbaijan's use against Armenian air defences in the 44-day war of September–November 2020. Azerbaijan deployed Harops alongside Bayraktar TB2s in a coordinated campaign to systematically destroy Armenian air defence networks.

The Harop attacks produced verified destruction of:

• 9K33 Osa (SA-8) air defence systems
• 9K35 Strela-10 systems
• Various radar systems

The psychological and operational impact of the Harop was disproportionate to the number of munitions used. Armenian radar operators, aware that activating radars attracted Harops, faced the dilemma of either revealing their positions or operating blind. The combination of TB2s conducting strikes in the absence of active radar and Harops hunting any radars that activated created a layered SEAD environment that effectively neutralised Armenia's integrated air defence network.

This enabled the TB2s to operate with greater impunity — the two systems are mutually enabling. The 2020 conflict became a case study in the synergistic combination of SEAD loitering munitions and armed ISR drones.

Confirmed Operators

India: One of the first export customers; India procured Harpy (and reportedly Harop) for potential use against Pakistani air defence radar. The acquisition contributed to Pakistan's subsequent counter-SEAD investments.

Azerbaijan: Demonstrated operationally in 2020. Azerbaijani acquisition was part of a broader Israeli arms relationship that included Harop, Harpy, TB2 compatibility (Turkey-Israel relationship at that time), and various other systems.

Germany: Reportedly procured Harpy for anti-radiation capability.

South Korea: Reported user.

Turkey: Historical relationship with IAI; Turkey has acquired Israeli UAS systems historically though the relationship has been complicated by political developments.

Others: IAI has sold Harpy and Harop to multiple customers whose identities are not publicly confirmed, consistent with IAI's standard export practice.

Export Controls and Controversy

The sale of IAI anti-radiation loitering munitions to India generated controversy when India's purchases became widely known. Pakistan protested, citing destabilising effects; some analysts questioned whether the systems met relevant export control criteria given the potential for first-strike use against Pakistani early warning radars. India's acquisition reflected a deliberate strategy to develop SEAD capability for high-altitude mountain border conflict scenarios.

China's alleged reverse-engineering of the Harpy through its acquisition from Israel (later blocked by US pressure) and subsequent development of the CH-901 anti-radiation loitering munition illustrates the technology diffusion dynamics in this sector.

Significance

The Harop represents the high end of the loitering munition spectrum: a strategic weapon capable of operating over hundreds of kilometres, equipped with dual-mode guidance including autonomous radar homing, and proven in operational SEAD employment. Its 2020 combat record demonstrated that integrated use of loitering munitions and armed UCAVs can achieve decisive air superiority against adversaries with Soviet-era integrated air defence networks without flying crewed combat aircraft into contested airspace.

This lesson has been absorbed by air forces worldwide and is driving investment in SEAD-capable loitering munitions, counter-UAS systems specifically designed against them, and doctrinal revisions to air defence network activation procedures.