Articles

Technical articles on electric motor design, axial flux topology, drone propulsion, and UAV endurance, written by the engineering team at Turncircles.

Each article below works through one engineering question in depth, with the reasoning laid out alongside the answer. Why We Need Lighter Electric Motors sets out the physics behind why mass matters so much in mobile applications. What is a Drone breaks down the components and constraints that define drone performance, with motor selection at the center of it. The Four Quadrant Transducer article explains bidirectional power conversion and the control strategies that make regenerative braking possible in a hybrid drivetrain.

These articles are written by the engineering team building the motors, not a separate content team summarizing someone else's work. Where a claim needs a number behind it, the number is there. Where a topic has its own dedicated reference page, such as torque density or motor efficiency, the article links to it rather than repeating a shorter version.