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750 kW, 94 kg delivering 8 kW/kg - Hairpin windings are redefining motor design.
Fraunhofer IISB’s aircraft motor proves it. I was reading this Fraunhofer IISB's Hybrid-electric regional aircraft motor. It built something impressive. The motor of 750 kW, 94 kg Delivering 8 kW/kg Typical EV motors: ~2–4 kW/kg Speed reaches 21,000 rpm. Torque is 350 Nm. Cooling uses direct oil spray. Rated at 65°C coolant. They used NO15 electrical steel. Thickness is just 0.15 mm. This reduces eddy current losses. Hairpin windings improve current density. Also improv
Murali krishna
Jun 102 min read


Fraunhofer IISB’s aircraft motor - 750 kW, 94 kg delivering 8 kW/kg with Hairpin windings.
750 kW, 94 kg delivering 8 kW/kg Hairpin windings are redefining motor design. Fraunhofer IISB’s aircraft motor proves it. I was reading this Fraunhofer IISB's Hybrid-electric regional aircraft motor. It built something impressive. The motor of 750 kW, 94 kg Delivering 8 kW/kg Typical EV motors: ~2–4 kW/kg Speed reaches 21,000 rpm. Torque is 350 Nm. Cooling uses direct oil spray. Rated at 65°C coolant. They used NO15 electrical steel. Thickness is just 0.15 mm. This redu
Murali krishna
Apr 132 min read


ZeroAvia’s 600kW engine making electric aviation closer than ever
I was studying aerospace powertrains recently. Electric propulsion feels closer than ever. ZeroAvia’s 600kW engine proves it’s real. FAA cleared ZeroAvia’s 600kW electric engine system. Motor is a direct-drive, 2200 rpm shaft. Direct-drive means no gearbox losses. Controller: manages speed and torque precisely. Inverter: converts DC to AC power. Power is fuel ccell based 600 kW continuous output.⚡ Airbus explores 100-seat hydrogen aircraft. Hydrogen aviation sees strong
Murali krishna
Apr 61 min read
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