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by throwaway85825 25 days ago
Overland private supersonic travel should not happen, it would just be a massive unpriced negative externality.

The lower the plane flies the fewer people end up hearing the boom. The denser air also requires an absurd amount of fuel to fly through. Commercially uneconomical. Even the military only uses low level supersonic for a last dash to the target.
1 comments
randallsquared 25 days ago
When Boom was testing last year, the sonic boom never reached the ground, as I recall. That can be arranged at higher altitudes, but doesn't work at low ones.
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throwaway85825 25 days ago
That's only possible under specific climatic conditions where there's separate temperature/pressure layers. Which is why they asked to repeal the ban on supersonic flight over populated areas. If they actually thought it wouldn't make noise they wouldn't be asking for the rule to be changed.
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randallsquared 25 days ago
The rule bans the supersonic flight regardless of whether it's audible or not, so they'd still be asking for the rule to be changed.
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throwaway85825 25 days ago
They didn't ask for only a non audible change, because they know that it will not be. It's just marketing and misdirection because the truth is much less rosy.
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