Designs for a hypersonic jet capable of flying from London to Tokyo in two hours were unveiled at a Paris airshow on the weekend.

The Zehra project currently being developed by European aeronautics company EADS aims to produce a jet capable of reaching speeds of 3,125mph (5000 kph) with a cruising altitude of around 20 miles (32 km) above the earth.

At those speeds a flight from London to Sydney would take only three and a half hours.

EADS innovation and technology director Jean Botti said:

“We have been working on this project for long enough now to know that it is viable.”

The jet would be capable of carrying up to 100 passengers and powered by biofuels, hydrogen and oxygen – rather than the regular plane-juice of kerosene – would be one of the world’s most environmentally friendly aircraft.

The Zehra hypersonic jet would be a welcome successor to Concorde (pictured), the supersonic passenger airliner decommissioned in 2003 due to prohibitive costs and safety concerns.

Designs for the jet were unveiled at Le Bourget airshow in Paris on Saturday but don’t get too excited just yet – the jet won't be operational for commercial flights until at least 2050.