Super-quick business jet concept unveiled in Paris.

HyperMach's concept business jet will really move the goalposts.

Having just completed a long-haul flight in Cattle Class, we are acutely aware of the need for some form of air transport that reduces the travel time between continents – and HyperMach’s ZEHST concept plane would seem to fit the bill. Just unveiled at the Paris Air Show, this slim and sexy business jet (dubbed SonicStar) will theoretically cruise at Mach 3.5 at an altitude of around 19 000 metres. This would enable it to go from Paris to New York in under two hours.

Of course, to achieve all this requires something rather special in the way of aircraft design, not to mention propulsion systems. HyperMach say they intend to fundamentally change the way aero gas-turbine engines operate in order to significantly improve the performance of aircraft systems, using hybrid engine technology and highly efficient, supersonic, variable bypass fan ratio engine design. We await developments with great interest.