In a joint ceremony with Lockheed Martin Skunk Works in Palmdale, California, on Friday, Nasa revealed the X-59, an experimental aircraft that is expected to fly at 1.4 times the speed of sound – or 925mph (1,488 km/h).

The aircraft, which stands at 99.7ft (30.4 metres) long and 29.5ft wide, has a thin, tapered nose that comprises nearly a third of the aircraft’s full length – a feature designed to disperse shock waves that would typically surround supersonic aircraft and result in sonic booms.

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[–] eskimofry 6 points 10 months ago

Not OP:

The more you try to fly faster through any fluid (like earth's atmosphere) the more drag you face. Hence you need a lot more energy (orders of magnitude more, possibly exponentially more). This equates to more fuel burn.

Also since you are going supersonic... you really cannot build big. Also, these things are quite expensive to build, maintain and run. Hence only the top 1% of folk could afford to fly in these things.