Zepher’s Hydrogen Drone Quietly Sets New Altitude Record, Pushes Past Group II Limits

The hydrogen-powered Z1 drone from Zepher Flight Labs has reached a new altitude milestone: 12,000 feet (3,658 meters) with a full payload.

Tested alongside the US Army Research Laboratory, the flight confirmed the platform’s ability to fly higher and quieter than typical Group II drones.

Unlike conventional drones that rely on batteries or combustion engines, Z1 runs on hydrogen fuel cells and emits only water vapor, making it ideal for stealthy and sensitive operations.

Read the full story on NextGen Defense: Zepher’s Hydrogen Drone Quietly Sets New Altitude Record, Pushes Past Group II Limits