As the line between aeronautics and space narrows, magnetic technology is emerging as one of the strongest bridges connecting the two domains. The same high-temperature, radiation-tolerant Samarium Cobalt (SmCo) magnets that have powered satellites, deep-space missions, and ion thrusters for decades are now helping shape the next generation of advanced aircraft systems. With missions pushing aircraft higher, farther, and into more electrified designs, aerospace engineers are increasingly turning to magnetic materials and assemblies originally developed for orbit.
Permag™, backed by more than 170 years of combined expertise across Dexter, Electron Energy Corporation (EEC), and Magnetic Component Engineering (MCE), is uniquely positioned at this intersection—bringing space-grade magnetics to the evolving needs of modern aviation.
From Orbit to the Flightline
The distinction between “aircraft” and “spacecraft” is fading as the aerospace industry adopts technologies once exclusive to spaceflight. High-altitude platforms, hybrid launch systems, electric propulsion, and reusable components now share engineering challenges long familiar to satellite and spacecraft designers. These include high temperatures from compact, high-power electrical systems, extended exposure to radiation at altitude, more aggressive vibration profiles, and the expectation of long service life under demanding conditions.
Because these conditions mirror what magnetic components face in orbit, it’s no surprise that SmCo—one of the most proven space materials—is finding a new home in next-generation aircraft.
Why SmCo Is the Cross-Domain Magnet of Choice
SmCo has earned its reputation through decades of space heritage. Known for exceptional temperature stability, intrinsic radiation tolerance, corrosion resistance, and ability to maintain magnetic output under harsh thermal and mechanical stress, it serves as a backbone material in:
- Hall-effect thrusters
- Ion propulsion systems
- Reaction wheels
- Attitude control mechanisms
- Spaceborne sensors and actuators
These systems endure thermal cycling, vacuum conditions, launch shock, and the long-term effects of radiation—conditions that very few magnetic materials can survive without performance degradation. As aircraft increasingly adopt electrified architecture and operate in more extreme environments, SmCo provides a ready-made solution shaped by the unforgiving conditions of space.
SmCo’s Influence Across Modern Aircraft Systems
Electrification is one of the most influential trends in aerospace, and it places new demands on magnetic assemblies. Electric propulsion systems require compact, thermally stable magnets capable of supporting high power densities and rapid duty cycles. The parallels to ion thruster magnet design are unmistakable. SmCo’s ability to maintain magnetic performance at elevated temperatures makes it ideal for high-speed motor rotors, high-efficiency generators, and precision actuators within e-propulsion constructions.
SmCo is also advancing the reliability of landing systems. eTaxi technologies and modern braking systems must operate through sudden temperature spikes, shock loads, and persistent vibration—all stresses that echo those experienced by spacecraft mechanisms transitioning through launch and long-term orbit. Space-grade magnetics ensure these systems deliver predictable, repeatable force generation.
In addition, aircraft environmental control and avionics systems increasingly rely on rugged magnetic components. Pumps, cooling fans, sensors, and magnetically coupled systems often operate near engines, power electronics, or other thermal hotspots. SmCo’s durability reduces failure risk in mission-critical scenarios, reinforcing overall platform resilience.
Permag’s Role in a Converging Aerospace Landscape
As aerospace platforms evolve, reliable magnetic materials and assemblies become more critical than ever. Permag supports this evolution:
- Production of advanced magnetic assemblies tailored for propulsion, actuation, and sensing
- Proven heritage across satellites, defense systems, and emerging electric-aircraft programs
By combining deep materials expertise with vertically integrated manufacturing, Permag delivers magnetic solutions that thrive in the harshest conditions—from low Earth orbit to long-range commercial flight.
The convergence of space and aviation is accelerating, and magnetic innovation is central to this transformation. SmCo magnets, once used primarily in satellites and ion thrusters, are now enabling safer, more efficient, and more resilient aircraft. By transferring proven space-grade technology into next-generation aviation systems, Permag is helping propel the future of aerospace—where flight and orbit meet, and where performance in extreme environments is no longer optional but essential.
Ready to elevate your aerospace projects? Contact us today to learn how SmCo magnets can power your next innovation!