Daily Memo: Hydrogen Flight Test Results To Help Answer Key Contrail Questions

A barely visible contrail from the hydrogen-powered Arcus-J glider on one of the Blue Condor test flights is circled in red.

A barely visible contrail from the hydrogen-powered Arcus-J glider on one of the Blue Condor test flights is circled in red.

Credit: DLR / Airbus
While there is broad agreement that contrails have a net warming impact on climate, nobody knows for certain whether this effect will be better or worse with contrails produced by hydrogen-powered aircraft. Answering this fundamental question could be key to the viability of long-term plans to...
Guy Norris

Guy is a Senior Editor for Aviation Week, covering technology and propulsion. He is based in Colorado Springs.

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