Brazil-based major aerospace and defence group Embraer on Monday gave an update on its Energia initiative to achieve net-zero commercial aviation by 2050. Energia was launched in November last year, with four concepts for small zero-carbon regional airliners, ranging in size from a nine-seater to a 50-seater, with four different potential propulsion technologies – electric, hybrid-electric, hydrogen fuel cell, and hydrogen fuel- or sustainable aviation fuel- (SAF) powered gas turbine, power plants. The manufacturer has now narrowed its study down to just two size categories (19-seat and 30-seat) and two propulsion technologies – hybrid-electric and hydrogen fuel cell. The hybrid-electric concept aircraft are designated the E19-HE and E30-HE, while the hydrogen fuel cell (also being referred to as hydrogen-electric) aircraft are the E19-H2FC and the E30-H2FC. The numerals 19 and 30 refer to the passenger capacities of the designs.
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