The new airliner will fly as fast as its counterparts, only on liquid hydrogen.

It is difficult to implement long-haul aviation without harm to the environment. But a group of 100 aerospace experts working on the UK government’s FlyZero project has said it will launch a 279-seat liquid hydrogen airliner that will connect anywhere in the world.

The FlyZero team, led by the UK Institute of Aerospace Technology, has explored all promising avenues for zero-carbon intercontinental aviation.

The team examined the pros and cons of batteries, hydrogen gas, ammonia, and liquid hydrogen. It was decided to abandon the batteries, since they are very heavy and cumbersome, and ammonia emits a lot of harmful emissions, for example, NOx.

The FlyZero team settled on the H2 cryogenic liquid, which is used in an internal combustion engine. H2 gas is promising for shorter flights, but takes up too much space and weighs a lot. The best option is a cryogenic liquid H2.

The team went on to create a midsize concept airliner that it says can fly at the same speed as its modern fossil fuel counterparts. The interior can accommodate up to 279 passengers. The board covers up to 9,723 km in one flight. This distance is 3.5 thousand km less than airplanes on fossil fuels fly, but, nevertheless, the airliner has very practical properties – it can connect any two airports on the planet with just one stop for refueling.

The team also predicts that these machines “will have higher operating efficiency than conventional aircraft from the 2030s” as hydrogen prices fall.