A British team has designed a hypersonic passenger aeroplane that could one day fly passengers between Europe and Australia in less than five hours.The A2 aeroplane was designed by Oxfordshire-based Reaction Engines and would carry 300 passengers at a top speed of almost 4,000mph. The company says the aircraft could be operating within 25 years and ticket prices would be comparable with an existing business class ticket, currently about £3,500.The A2 is capable of sustained travel at Mach 5, or 3,800 mph, more than twice the speed of Concorde.At 143 meters long it is roughly twice the size of the biggest current jumbo jets.
