AeroVironment, Inc. is a leader in Unmanned Aircraft Systems, Electric Vehicle Charging Systems, and Power Cycling & Test Systems.40 Years of Human Power™

Engineering Services: Ironless Core Motor



AeroVironment developed its Ironless Motor technology to support Lockheed Martin’s High Altitude Airship program, which required highly efficient and light electric motors to move and keep the airship on station at high altitudes. Employing innovative new winding strategies and tools, AeroVironment designed the Ironless Motor to take full advantage of new and stronger magnetic materials, such as high temperature Neodymium Iron Boron (NdFeBr), as they come into existence. Since iron or amorphous-based machines will suffer from higher losses and more core saturation at these high flux levels, only an ironless machine can take full advantage of such strong magnets. The other major advantage of the ironless machine is its superb part load efficiency of up to 98%. AeroVironment’s Ironless Motor technology may offer a unique value proposition to numerous applications and industries including environmental management, marine propulsion and micro motors.


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