Novosibirsk inventor Vadim Shcherbakov has developed an aircraft electric motor design that can improve the efficiency of electric aircraft and vertical take-off vehicles. The design features several unconventional solutions.
Instead of the traditional scheme, a system of magnets with tangential polarization is used here, which allows to amplify the magnetic field in the working gap of the engine.
Additionally, magnetic cores made of electrical steel with oriented grain are used, and the windings are made with rectangular copper wire.
This approach allows for a significantly denser filling of the internal volume of the engine with copper and reduces electrical losses. According to patent data, the resistance of the windings was reduced by 2–2.5 times compared to traditional designs.
Test samples have already shown high performance. An engine weighing 1.2 kilograms provides a specific torque of about 6 N·m per kilogram.
Larger versions weighing 5 and 15 kilograms achieve 12 and 17 N·m/kg respectively, and in peak modes are capable of demonstrating almost a twofold power reserve.
