One-way attack drone
Low-cost self-destructive UAV for pre-programmed strikes.
A one-way attack drone, also known as a suicide, kamikaze, or exploding drone, is an unmanned aerial vehicle built to destroy itself by crashing into a target with a built-in warhead. While it self-destructs like a loitering munition, it typically flies to pre-set coordinates rather than circling an area to hunt for targets under human control. Defense analysts often view it as a cheaper, slower alternative to a cruise missile.
The terms "one-way attack drone" and "loitering munition" are frequently mixed up in news reports, but military experts and doctrine increasingly separate them. Loitering munitions, such as the IAI Harop or ZALA Lancet, can hover over a target zone for a long time, using onboard sensors to find targets and requiring a human operator to approve the final strike. In contrast, one-way attack drones like the HESA Shahed 136 or Fire Point FP-1 rely on satellite navigation (like GPS or GLONASS) and inertial guidance to reach specific geographic coordinates. They generally cannot loiter, chase moving targets, or return to base if no target is found. According to the Royal United Services Institute, these drones are used for strategic strikes against fixed infrastructure far behind enemy lines, not for close battlefield support.
A key feature of modern one-way attack drones is their low cost compared to traditional cruise missiles. For instance, a Kalibr cruise missile can cost over $1 million, while a Shahed-136 is estimated at $20,000 to $50,000. This price gap lets operators launch them in swarms to overwhelm expensive air defense missiles like the Patriot or NASAMS, which cost far more than the drones they shoot down. Defenders therefore use cheap interceptor drones, electronic jamming, anti-aircraft cannons, and low-cost missiles like APKWS against them.
Most one-way attack drones use commercial off-the-shelf parts to keep costs and production simple. They are often powered by a two-stroke or four-stroke piston engine—copied from lawnmowers or small aircraft—driving a pusher propeller, which gives them a loud, distinctive sound like a moped or lawnmower. Jet-powered versions, like the Shahed-238, exist but are rare due to higher costs for the engine, fuel, stronger airframe, and more advanced flight controls.
- Cost range shahed 136
- $20,000 to $50,000
- Cost kalibr cruise missile
- upwards of $1 million
- First large scale strategic use
- Russo-Ukrainian war, beginning in late 2022
- Notable model
- HESA Shahed 136 (Russian designation Geran-2)
- Typical propulsion
- two-stroke or four-stroke piston engine
- Typical guidance
- GNSS and inertial navigation
Lore & Background
The term gained significant prominence during the Russo-Ukrainian war, particularly with the widespread use of the Iranian-designed HESA Shahed 136 by Russian forces (under the designation Geran-2). Defense analysts and military doctrines have increasingly sought to distinguish OWA-UAVs from loitering munitions. The primary distinction lies in the concept of operations: loitering munitions like the IAI Harop or ZALA Lancet loiter over a target area, use onboard sensors to locate targets, and typically require a human-in-the-loop to approve the strike. In contrast, OWA-UAVs like the Shahed 136 or Fire Point FP-1 utilize GNSS and inertial navigation to fly to specific pre-programmed coordinates, generally lacking the ability to loiter, hunt for moving targets, or return to base.
Most OWA-UAVs use Commercial Off-The-Shelf components to reduce cost. They are typically powered by simple piston engines driving a pusher propeller, giving them a loud acoustic signature compared to a 'moped' or 'lawnmower.' Jet-powered variants like the Shahed 238 exist but remain rare due to higher cost. Delta-wing configurations are common, and guidance is primarily through consumer-grade or military-grade GNSS modules aided by inertial measurement units. Unlike loitering munitions, they rarely carry cameras or seekers, limiting them to striking stationary targets.
During the Russo-Ukrainian war, Russia launched Shahed-131 and Shahed-136 drones against Ukrainian energy infrastructure and cities. Ukraine developed its own long-range OWA-UAVs such as the 'Beaver' and AQ-400 to strike targets deep inside Russia, including oil refineries and airfields. In the Middle East, the Houthi movement used OWA-UAVs like the Samad and Qasef families to strike targets in Saudi Arabia, the UAE, and commercial shipping in the Red Sea. The United States deployed its own OWA-UAV system named LUCAS to the Middle East, and on February 28, 2026, LUCAS was used to strike Iranian targets during the 2026 Iran war.
Reader's Guide
The significance of one-way attack drones lies in their cost asymmetry relative to traditional cruise missiles and air defense systems. A Kalibr cruise missile may cost upwards of $1 million, while a Shahed-136 OWA-UAV is estimated to cost between $20,000 and $50,000. This allows operators to launch them in swarms to deplete expensive surface-to-air missiles like the MIM-104 Patriot or NASAMS, which cost significantly more than the drones they destroy. As a result, defenders must use a combination of low-cost interceptor drones, electronic jamming, anti-aircraft cannons, and low-cost missiles such as APKWS. According to the Royal United Services Institute, OWA-UAVs are distinct because they are often employed for strategic 'fires' against static infrastructure deep behind enemy lines, rather than tactical battlefield support. Their legacy is demonstrated by their central role in asymmetric strategic attrition for both belligerents in the Russo-Ukrainian war, and their adoption by state and non-state actors in the Middle East, showing the capacity of low-cost autonomous drones to bypass traditional air defenses and disrupt military logistics over long distances.
Did You Know?
- The Shahed-136 OWA-UAV is estimated to cost between $20,000 and $50,000, compared to a Kalibr cruise missile costing upwards of $1 million.
- Most one-way attack drones are powered by simple two-stroke or four-stroke piston engines, often copied from lawnmower engines, giving them a loud 'moped' or 'lawnmower' sound.
- The United States deployed its LUCAS OWA-UAV system to the Middle East, and on February 28, 2026, it was used to strike Iranian targets during the 2026 Iran war.
- Unlike loitering munitions, OWA-UAVs generally lack the ability to loiter, hunt for moving targets, or return to base if a target is not found.
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