A startup has unveiled a hydrogen-powered supersonic plane at the Paris Air Show

Destinus has chosen hydrogen as a fuel since its calorific value is three times that of kerosene used in aircraft today. Moreover, the fuel also has exceptional cooling capabilities making it an ideal fuel for combined-cycle engines. These engines consist of a turbojet capable of generating subsonic and supersonic speeds, and Destinus has also designed an afterburner that can provide additional thrust when required.

About a decade later, the company aims to introduce the Destinus L, the larger variant of its aircraft capable of carrying up to 400 passengers. This aircraft is expected to travel between global destinations at speeds of Mach 6, powered by cryogenic hydrogen that will facilitate propulsion and cooling.first prototype Destinus 1

Last month, Destinus successfully flight-tested its hydrogen-fueled afterburner technology, which is also being featured on the Destinus 3. "The propulsion system for Destinus 3 will incorporate a kerosene-fueled turbojet engine in conjunction with a liquid hydrogen-fueled afterburner," said Mikhail Kokorich, CEO of Destinus, in a press release. "We're also developing plans to trial a fully hydrogen-based system for both turbojet and afterburner.

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