FlyerTalk Forums - View Single Post - UA to sign commercial agreement with Boom Supersonic
Old Jun 9, 2025 | 6:07 am
  #417  
Maxwell Smart
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Originally Posted by jpezaris
NASA has been looking at ways to design the airframe to reduce the buildup of shockwaves, spreading them out so that their acoustic impact is less jarring: https://www.nasa.gov/centers-and-fac...ming-the-boom/

Boom is integrating that technology into their designs. The language that's being used is that the goal is to create a sonic thump, instead of a sonic boom.
I am intimately aware of the NASA Quesst mission and development of the X-59, which will generate a sonic 'thump' versus a boom, and will then be used to conduct studies to figure out just what an acceptable sound level is through public surveys conducted during overflight tests, which will then inform the development of an actual noise standard that airframers can then design to. But that is still an ongoing activity, with the airplane nearing first flight.

The connection of that work to Boom is what I was questioning, as I don't think there is any such connection. I do not believe Boom is integrating any of the X-59 airframe technology into their design, my understanding is their aircraft is based on conventional design and will generate a conventional sonic boom (and thus intended for overwater routes like Concorde). A lot of hype has been made lately about so-called "boomless technology" of flying an aircraft supersonically without a boom, but that is only possible for flight slightly above Mach 1 and only under specific atmospheric conditions. It is a well-known concept called "Mach cutoff", but it is due to atmospheric physics, it is not a "new technology", and won't happen at the supersonic speeds that an actual airliner could efficiently fly.
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