Axial Flux vs. Radial Flux: Two Ways to Solve the Same eVTOL Motor Problem

Every eVTOL needs motors that are light, redundant, and fail-safe -- but Joby and Archer have landed on different architectures to get there. Here's what radial and axial flux actually mean, and why the choice isn't just an engineering preference.

What Today's Batteries Can -- and Can't -- Do for eVTOLs

Battery specific energy is the single number that determines how far, how heavy, and how safely an eVTOL can fly. Here's where the technology actually stands in 2026 -- and why more energy density isn't a free upgrade.

How eVTOL Aircraft Actually Get Certified: FAA and EASA, Explained

"Certified" gets used loosely in eVTOL coverage. Here's what type certification actually requires from the FAA and EASA, and why the two regulators created an entirely new aircraft category to make it possible.

Inverters and Motor Controllers: The Overlooked Half of eVTOL Propulsion

Motors and batteries get most of the attention, but the power electronics sitting between them -- inverters and motor controllers -- are just as much of a limiting factor on eVTOL performance, and a lot less discussed.