2 ms·

NASA seems to think it's possible though. https://ntrs.nasa.gov/api/citations/20160007348/downloads/20160007348.pdf https://ntrs.nasa.gov/api/citations/2016000

• labcomputer 10mo ago
  Yea, but only for speeds up to Mach 1.3… theoretically. Not Mach 2.0 flights. And they only demonstrated the effect up to Mach 1.1. Saving only one hour on a transcontinental (US) flight doesn’t seem all that impressive.
• filleduchaos 10mo ago
  See the pesky thing is that if you actually read the paper you've been linking as opposed to just running with "NASA said it's possible", you'll notice that like I alluded to, at Mach 1.3 (theoretically!) "boomless flight" is much slower than Concorde's Mach 2+ cruise that the company certainly wants you to think of when you do your back-of-the-napkin supersonic flight time savings maths. And that's on top of requiring optimal atmospheric conditions, so not even a guarantee to begin with. The laws of physics funnily enough are not something you can "move fast and break" or PR-speak your way around.