Aerospace

Aerospace applications impose extremely stringent requirements on permanent magnet assemblies, which must meet the core standards of “extreme-environment tolerance + high-precision magnetic performance + high reliability + lightweight integration”. They must not only have ultra-high magnetic stability (annual demagnetization rate ≤ 0.03%) and high magnetic flux density, and be able to operate stably for long periods under harsh conditions such as extreme temperature differences of -60°C to 150°C, vacuum, strong radiation, severe vibration, and shock, but also adopt lightweight and high-strength materials (such as samarium-cobalt permanent magnet alloys and titanium-alloy encapsulation) to achieve structural miniaturization and low-power design. Such permanent magnet assemblies are widely used in key scenarios such as spacecraft attitude control (core magnetic drive components for momentum wheels and reaction flywheels), aircraft engines (high-efficiency permanent magnet generators and turbine magnetic transmission components), satellite payload equipment (magnetic control components for onboard radar and communication systems), missile guidance systems (high-precision magnetic sensors and magnetic navigation components), and airborne equipment (magnetic positioning modules for aviation instruments and permanent-magnet drive units for electric actuators). Their core advantages are particularly prominent: first, strong adaptability to extreme environments—through special material selection and sealing/protection design, they can withstand aerospace-specific environments such as vacuum, high/low temperatures, and radiation, ensuring long-term stable operation; second, precision and high efficiency—high magnetic flux density and low magnetic distortion ensure precise and controllable power output, supporting high-precision completion of critical tasks such as spacecraft attitude adjustment and high-efficiency engine power generation; third, lightweight integration—optimized structural design and the use of high-performance permanent magnet materials significantly reduce weight and volume while improving magnetic performance, meeting the core needs of aerospace equipment for “weight reduction and efficiency improvement”; fourth, reliability and durability—strict end-to-end quality control and anti-fatigue/anti-aging design give the assemblies ultra-long service life and low failure rates, while also supporting customized adaptation to different models of aerospace equipment.