This is so exciting. The only ones I know working on this are Boom (unless they’ve pivoted entirely into AI DC turbines). Between this and the wind-turbine-blade air transporter it’s an exciting time for aviation. Now if we can only transition off leaded fuel!
Supersonic flight returning to US after half-century ban
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Re: Supersonic flight returning to US after half-century ban
#42If sonic booms become a routine occurrence over America, I expect to see a backlash against supersonic flight unifying everyone between chemtrail conspiracy theorists and the greenpeace. The anti data center backlash we have today will look like child's play.
Re: Supersonic flight returning to US after half-century ban
#43If you really want to make an impact on the noise floor, ban gasoline leaf blowers.
Air quality, too. Leaf blowers re-suspend carcinogens like brake dust and other fine particulate matter. Honestly just an awful practice all around.
Re: Supersonic flight returning to US after half-century ban
#44If you really want to make an impact on the noise floor, ban gasoline leaf blowers.
As someone who grew up near an US military base with constant low altitude aircraft noise: No thank you, I'd prefer the leaf blower any time.
Re: Supersonic flight returning to US after half-century ban
#45Re: Supersonic flight returning to US after half-century ban
#46On one hand I think we should applaud when regulators target the specific issue (like noise or pollution level) vs using some other metric to achieve their desired outcome. On the other hand I don’t have a ton of faith that current administration will set the targets at levels that have the general public’s interest in mind
Re: Supersonic flight returning to US after half-century ban
#47Earlier quoted context omitted.
My parents immigrated to the US in the 80s. They didn't steal anyone's land. Can I complain about rich people wasting fuel, polluting the air, and creating peace-shattering sounds? And about the stolen land, what should we do about it? Never complain about anything? Have no laws? Give all of your stolen land back, make all the reparations you owe people, and then go back to lecturing people online.
By immigrating, your parents(and you) took on the shared responsibility for the countries wrongdoings and great deeds. When people talk about this stuff, it isn't about apportioning blame. I'm not big on the stolen land thing because it's turtles all the way down, but this idea of divvying up blame makes no sense. We are all citizens.
If anything the parents have more responsibility by making a conscious choice vs simply being born in the US.
I don't agree with this point of view either.
Re: Supersonic flight returning to US after half-century ban
#48Earlier quoted context omitted.
[flagged]
Yep!!! It really has changed and has become exhausting. The most flippant, negative, cynical, and antagonistic replies nowadays, rather than genuine curiosity about the news or optimism. Too bad because HN has been my “home” on the internet for 15 years.
And the comment you’re replying to, which is entirely a reasonable opinion, was flagged, proving their point. I’ve been here for 18 years and similarly alienated by the cynicism here.
Re: Supersonic flight returning to US after half-century ban
#490.11 pound per square foot is what is being proposed. That's 108 decibels. Which is between standing next to a lawn mower and standing next to a car horn. I don't see how anyone will tolerate that in practice. https://www.omnicalculator.com/physics/db
It’s not accurate to convert .1 psf to dB because it’s an impulsive shape, not a continuous tone. And human loudness perception depends on how smooth (low frequency) the shape is
> It’s not accurate to convert .1 psf to dB because it’s an impulsive shape, not a continuous tone. And human loudness perception depends on how smooth (low frequency) the shape is
Sorry can you explain more? It's just the definition of dB (?)
And it's less impulsive than you imagine, go to youtube to listen to the sonic boom + continuous roar.
The FAA has no criteria about the "texture" of the sound and there is no reason to believe the allowed planes will differ substantially in this respect compared to every other supersonic aircraft in the past.
Re: Supersonic flight returning to US after half-century ban
#50If you really want to make an impact on the noise floor, ban gasoline leaf blowers.
I was 100% in your camp until my neighbor bought an electric blower. The loud, high pitched whine is somehow louder and more ear piercing than a gas blower.