Airbus this week unveiled the latest iteration of its planned 100-seat hydrogen-powered airliner, reaffirming its commitment to the ZeroE program it now says could lead to the launch of commercial services toward the end of the 2030s. During its Airbus Summit presentations in Toulouse on March 25, the European aerospace group revealed a design with four wing-mounted open-rotor propulsion systems that Glenn Llewellyn, v-p of the ZeroE project, said was based on progress in achieving improved power density since it first showed a six-engine model in December 2020.