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Originally Posted by Avimimus
Guys, they couldn't make the Mach 2 Concord commercially viable.
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Times change.
They couldn't make the space shuttle commercially viable either, in 2011 you can travel to space for 250k - and probably for less than half of it in 10yrs.
The hypersonic airliners will be reality, it just takes another 20years or so.
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As for evasive maneuvers - yes they may be somewhat relevant considering that what is trying to shoot you down will either be going at similar speed or be trying to fly in front of you (think of Mach 1, guided barrage balloons).
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It has to catch up first.