Round the world on hydrogen; first-responder VTOL competition; stop-fold tiltrotor; another Chinese eVTOL.

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

Aviation Week ranks the 15 leading companies in the nascent eVTOL market.

Uber Elevate co-founder says some companies are better positioned for success than others.

The GoAero organization has launched a competition to develop and test a vertical-takeoff-and-landing aircraft in simulated emergency response missions.

As debate over design and cost continues, a group of military and industry experts eschewed most advanced Collaborative Combat Aircraft.

Daher says the hybrid-electric Ecopulse demonstrator has now logged 1.5 hr. of flight testing in full electric mode.

The company hopes to unleash untapped benefits of the aircraft for commercial and military use.