Heavy-Payload BLDC Propulsion Motors for Industrial Drones & eVTOL
Published on August 22, 2026
Engineering Challenges in Heavy-Lift Drone Propulsion
Industrial UAVs, delivery drones, and eVTOL platforms operate under demanding aerodynamic and thermal conditions:
Thermal Throttling at Hover: Continuous high-thrust hovering generates intense stator heat, causing permanent magnet flux degradation and power fade.
Payload-to-Weight Penalties: Suboptimal electromagnetic design increases dead weight, cutting flight times and limiting maximum takeoff weight (MTOW).
Atmospheric Ingress & Salt Fog: Moisture, dust, and coastal salt spray penetrate open-frame outrunners, causing bearing seizure and winding short circuits.
Technical Comparison
Feature | Standard Outrunner Motors | MYSUN POWER eVTOL Propulsion Motors |
Cooling Architecture | Passive ambient cooling | Centrifugal active airflow cooling (15°C lower stator temp) |
Thrust Efficiency | Standard magnet circuit (~3.5 g/W) | Curved N52SH arc magnets & 0.2mm laminations (>5.2 g/W) |
Ingress Protection | Open frame / Non-coated | IP56 Weather-Sealed / Nanocoated stator & hybrid bearings |
Key Specifications & Customization
Operating Voltage: 12S–24S LiPo (44.4V–100V DC platforms)
Thrust Range: 10 kg to 60+ kg continuous thrust per rotor axis
Customization Scope: Direct propeller hub bolt patterns, tailored KV matching, and integrated telemetry sensors (temperature and RPM feedback).