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Hybrid Electric Airliners Will Cut Emissions—and Noise

Electric propulsion will develop in the air as it did on the ground, by initially using batteries to assist a fuel-burning generator

11 min read
Photo: Siemens
Photo: Siemens

Editor’s note: On 31 May 2018 a Magnus eFusion electric airplane equipped with a Siemens propulsion system crashed in Hungary, killing the pilot mentioned in this article, János B. (as his name has been given in the Hungarian press) and a passenger. Siemens says it is working with authorities to determine the cause. For more, see the post online at “Prototype Electric Plane Built by Siemens and Magnus Aircraft Crashes in Hungary, Killing Both on Board.”

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The Aftershocks of the EV Transition Could Be Ugly

To avoid unintended consequences, bring realism to the table

10 min read
CEO of Dodge Brand standing on a podium next to a Dodge Charger Daytone SRT concept all-electric muscle car. Behind him a giant screen displaying the sentence: The Rules Have Changed.

Tim Kuniskis, CEO of Dodge Brand, Stellantis, introduces the Dodge Charger Daytona SRT Concept all-electric muscle car on August 17, 2022 in Pontiac, Michigan.

Bill Pugliano/Getty Images

The introduction of any new system causes perturbations within the current operating environment, which in turn, create behavioral responses, some predictable, many not. As University of Michigan professor emeritus and student of system-human interactions John Leslie King observes “People find ways to use systems for their own benefit not anticipated by designers and developers. Their behavior might even be contradictory to hoped-for outcomes.”

“Change rides on the rails of what doesn’t change,” King notes, “including people being self-serving.”

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Fine-Tuning the Factory: Simulation App Helps Optimize Additive Manufacturing Facility

Additive manufacturing processes can provide rapid and customizable production of high-quality components

7 min read
Fine-Tuning the Factory: Simulation App Helps Optimize Additive Manufacturing Facility

An example of a part produced through the metal powder bed fusion process.

This sponsored article is brought to you by COMSOL.

History teaches that the Industrial Revolution began in England in the mid-18th century. While that era of sooty foundries and mills is long past, manufacturing remains essential — and challenging. One promising way to meet modern industrial challenges is by using additive manufacturing (AM) processes, such as powder bed fusion and other emerging techniques. To fulfill its promise of rapid, precise, and customizable production, AM demands more than just a retooling of factory equipment; it also calls for new approaches to factory operation and management.

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