Drone Propulsion Motors
High-KV outrunner and inrunner brushless DC motors engineered specifically for continuous aerodynamic thrust on multirotors, fixed-wing UAVs, and loitering munitions.
US manufacturing of small outrunner drone motors is ramping via domestic factories (such as Unusual Machines in Orlando and Westmag in SSF). Many vendors still operate a dual-sourcing model (US-wound vs globally sourced stators and magnets). Verify SKU-level domestic winding and magnet origin directly.
US Manufacturers & Suppliers
KDE Direct
✓ NDAAIndustrial and heavy-lift brushless motors for multi-rotor, single-rotor, and UAV platforms. US design and engineering headquarters with proprietary domestic and overseas production facilities (CNC aluminum components produced in OR/WA; motor winding historically sourced globally).
Vertiq
✓ NDAATightly integrated smart motor and ESC modules combining high-efficiency BLDC propulsion with field-oriented control (FOC) speed controllers. Designed and built in the United States with Blue UAS Framework compliance for commercial and defense UAS.
ePropelled
✓ NDAAElectric propulsion systems and magnetic gearing solutions for defense UAVs, air, land, and sea autonomous vehicles. Operates domestic manufacturing facilities in Laconia, NH with documented US coil winding, rotor assembly, balancing, and a rare-earth magnet development partnership with USA Rare Earth.
Westmag
✓ NDAAHigh-volume electric motor manufacturer founded in 2026 (a16z-backed) operating 'Factory 01' in South San Francisco. Products cover drone outrunners (20–100 mm stator) and quasi-direct drive robot actuators (1–150 Nm, 24–48V, 6:1–12:1 planetary gearboxes). Targets domestic and allied sourcing for drones, quadrupeds, and robotic joints.
Unusual Machines
✓ NDAAManufacturer of NDAA-compliant brushless motors (Brave series 2207, 2807, 3220) and flight electronics operating a 17,000 sq ft facility in Orlando. Employs a dual-catalog offering of US-wound motors alongside cost-effective globally sourced configurations for attritable defense and commercial UAS.
Freefly Systems
✓ NDAAUS drone OEM and advanced propulsion systems developer producing the Astro and Alta X multirotor platforms. Engineers and manufactures proprietary high-efficiency drone motors (F45, 7010) and Silent-Drive FOC ESCs in Woodinville, WA. Products are DIU Blue UAS Cleared and heavily fielded across DoD and NDAA commercial operations.
Castle Creations
Electronic speed controllers (ESCs) designed and manufactured in Kansas. Motors are US-engineered but manufactured in China at a company-owned facility.
CRG Defense
✓ NDAAUS factory producing lithium pouch cells and battery packs with high non-FEOC content (>95% asserted) and a public 7-year cathode material offtake agreement with 6K Energy. Optimized for defense UAS, mission-critical robotics, and electric propulsion.