The threat landscape facing modern naval forces has changed rapidly. Cheap, mass-produced uncrewed aerial systems, available in vast numbers and increasingly capable of coordinated attack, have exposed the limitations of conventional air defence. Intercepting a drone costing a few hundred pounds with a missile costing tens of thousands is not a sustainable equation. DragonFire is the UK’s answer to that problem.

Developed through an industry partnership led by MBDA with Leonardo UK and QinetiQ, DragonFire is a Laser Directed Energy Weapon system designed as an integral effector within a layered air defence architecture. The system has entered production and is on track to equip the Royal Navy in 2027, with first installations planned aboard Type 45 destroyers. That timeline reflects both the urgency of the threat and the maturity of the technology.

The system is housed in a modular 20ft ISO container, drawing on the host platform’s own power and cooling rather than requiring independent provision. This makes DragonFire straightforward to integrate on to, and remove from, different platforms.

At its core, DragonFire uses coherent beam-combining technology to focus high-energy laser light on to a target with exceptional precision. The system is nominally rated at 50kW and has been designed to be scalable. Its beam director uses three apertures to search, identify and engage. The first acts like a pair of binoculars, scanning a wide area for threats. A second mid-range aperture examines a located target in greater detail. The third, telescope-like aperture provides ultra-precision targeting, narrowing on to the threat and confirming engagement. The beam is produced by compressing raw electrical power into a laser source, then focusing and stabilising it through advanced hardware and algorithms before directing it precisely on to the target, where the intense light cuts through the structure.

A critical design principle is that raw power output is not the primary measure of efficacy in a laser weapon. What matters is how much of the available power can be concentrated on to the most vulnerable point of a target. DragonFire has been specifically engineered to maximise that focused delivery, ensuring rapid intercept rather than simply generating the highest possible beam energy.

Steering the beam with the required accuracy is technically demanding. Fast-moving mirrors direct the laser, with high-speed cameras and sophisticated image-processing algorithms operating at thousands of frames per second providing continuous feedback. Even tiny mirror adjustments translate into large beam movements at range, and as a target heats and begins to give off smoke and particles, its optical signature changes, compounding the tracking challenge.

Atmospheric turbulence is a further obstacle. DragonFire addresses this by increasing power output to compensate for adverse conditions, and applying real-time wavefront correction, measuring the return signal from the target and calculating adjustments to counteract beam distortion before it reaches the aim point.

The trials programme has been methodical. Initial firings against static targets at the Dstl Porton Down range were demonstrated publicly in October 2022. Low-power tracking trials at the MoD Hebrides Range followed in July 2023, with a high-power shot destroying a moving aerial target in October 2023. A further aerial engagement was conducted in January 2024. The consistency of results prompted the UK government to accelerate the programme and commit a further £316 million, bringing total investment to £416 million.

This article appeared in Technical, TNA May/June 2026.