ZeroAvia's radial compressor will support up to 900-kW power systems, the hydrogen-electric powertrain solutions company says.

Neither OEM has plans for new aircraft programs in the next one or two decades where it matters most in terms of emissions reduction—in the long-haul segment.

GKN Aerospace, Marshall, and Parker Aerospace have signed an MOU to partner on development of a liquid hydrogen fuel system for future zero-emission aircraft. 

Gevo says its Net-Zero 1 ethanol-to-jet project has been invited to begin due diligence and term sheet negotiation phase for a $950 million loan guarantee.

Aero Challenge Group is to invest “a double-digit million Euro sum” in development of the aircraft designed to carry 1,000 kg of payload or eight passengers.

American Airlines has cooperated with Google Research and Breakthrough Energy to test whether atmospheric zones likely to create contrails can be avoided.

Initial operating experience of a recently developed drag-reduction package on a Delta Air Lines Boeing 737-800 indicates cruise fuel-burn savings of up to 2%.

German aerospace center DLR has flown a subscale demonstrator of the HyBird concept for a small hybrid-electric regional aircraft.