H3X, based in Denver, the company develops advanced electric propulsion systems for aircraft. This is a monstrous challenge for science and industry, as we will have to switch aircraft from polluting fossil fuels to electric alternatives at some point in the relatively near future.

Unfortunately today’s technology isn’t suitable. The combination of battery and motor weight simply don’t allow for the production of even medium-range commuter aircraft. The more range required, the more batteries must be on board, and that increases the weight. At some point it’s essentially impractical to consider electric propulsion in this scenario.

https://www.fabbaloo.com/news/h3x-uses-3d-printing-to-build-extraordinary-electric-motor?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Fabbaloo+%28Fabbaloo%29