Hermeus, an aerospace technology company founded in 2018, plans to massively cut flight times with a jet that can travel at Mach 5&mdashthat&rsquos five times the speed of sound. This would transport a business class traveller from New York&rsquos JFK International Airport, to Paris&rsquo Charles de Gaulle Airport in 90 minutes or less, compared to the usual seven and a half hours. The aircraft is projected to have a travel range of about 7,400 kilometres with an average cruising speed of over 5,300 kilometres per hour&mdasha game-changer for transatlantic long-hauls.