“Airbus has won a patent for a hypersonic passenger plane, but Concorde’s hydrogen-powered successor is unlikely to leave the drawing board any time soon.  The proposed aeroplane would cut the journey time from Paris to Tokyo from 12 to under three hours. The idea, first published in 2011, is to use three different kinds of engine power to jump above the atmosphere while still using regular runways for takeoff. It has now won approval from the US Patent Office.  The concept comes as commercial space companies such as Virgin Galactic pursue plans for low-level space flights. Airbus’s proposed plane has ‘gothic delta wings’ that echo the elegant curves of Concorde.”

http://www.theguardian.com/business/2015/aug/05/airbus-patents-hypersonic-plane-paris-tokyo-three-hours

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