New satellite engine uses atmosphere as fuel source

The RF Helicon-based plasma thruster. PIC COURTESY/F Romano

A new atmosphere-breathing electric propulsion system could allow satellites in Very Low Earth Orbit (VLEO) to stay in orbit indefinitely without carrying conventional propellant.

Developed by University of Stuttgart researcher Francesco Romano, the engine scoops atmospheric gases, converts them into plasma, and expels them to counteract drag.

Featuring an efficient intake and an MRI-inspired thruster, the system operates on solar power and could also support future Mars missions.

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