Here’s a fuel-saving technology for a range of vehicles you probably haven’t heard about in a while: flywheels. Designed to capture and re-use braking energy, flywheels are now being tested not just ...

After years of being billed as the next great revolutionary means of propulsion, flywheels may finally be ready for prime time. Aside from a few modest successes, flywheels have not lived up to this ...

Instead of using discrete permanent magnets to form the rotor of a flywheel’s integrated motor/generator, magnetic powder is mixed into the composite matrix. After the flywheel has been manufactured ...