Our roundup of the main aerospace and defense stories making the news this week.

The HySIITE engine concept shows promise for a practical zero-emission hydrogen-steam combined-cycle propulsion system.

Italian energy giant Eni’s sustainable mobility-focused division, Enilive, has commissioned its first SAF plant at the Gela biorefinery in Sicily.

The world is headed for a period of launcher abundance as the New Glenn expands rocket choice in the heavy-lift segment.

The sector seems more real than ever as eVTOL-makers ramp up production of full-scale aircraft.

Funded under the NASA Innovative Advanced Concepts program, the Hy2PASS project is led by Phillip Ansell.

SAF producer LanzaJet has selected a site in Teesside, northern England, for its next production facility, Project Speedbird.

IAG has invested in Wastefront, a UK company that plans to turn used tires into sustainable aviation fuel (SAF).