Britain Tests High-Altitude Surveillance Aerostats

The UK Ministry of Defence has successfully tested high-altitude aerostats designed for reconnaissance and surveillance missions in the stratosphere, according to the ministry’s website.

The trials were part of Project AETHER, which aims to develop low-cost, long-endurance platforms for aerial intelligence gathering.

The unmanned aerostats operate at altitudes between 18 and 24 kilometers — more than twice the cruising height of commercial airliners — and can cover over 3,000 kilometers without landing.

Their payload capacity is approximately 3 kilograms, including surveillance equipment and atmospheric sensors, allowing the systems to stay airborne for more than five days.

Countries are increasingly showing interest in high-altitude surveillance platforms for intelligence and early warning applications. The U.S. Army, for example, is preparing to adopt high-altitude micro-aerostats for operational use.