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EADS revealed the proposal at the Le Bourget air show (June 18, 2011). It is expected to fly at mach 4, 32km above the ground, and it will carry 50 to 100 people. It will combine three propulsion systems: two turbofans for take-off and up to Mach 0.8, then rocket boosters up to Mach 2.5, then two underwing ramjets would accelerate it to Mach 4.
The so called Zero Emission Hypersonic Transportation (Zehst) system notionally should fill the high-end market niche left unmet since the retirement of Concorde, says Jean Botti, chief technical officer at EADS.
The maximum acceleration the passengers would be exposed to is around 1.2g.
Originally posted by miniatus
Sweet, so I have to wait until I'm a senior citizen to see the cool tech