Posted on 09/02/2022 11:26:55 AM PDT by whyilovetexas111
Here comes the X-59: Supersonic transport may hold a promise of super-fast travel, but it also promises to be extremely loud – and not just to those on the actual aircraft. That is why the Concorde, which was developed as part of an Anglo-French effort and while operated by British Airways and Air France, was typically only used for travel from Europe to North America. The American SST (supersonic transport) effort was grounded mainly due to noise and environmental concerns.
Those concerns remain as multiple European nations and environmental groups seek to stop any comeback of supersonic commercial travel. Earlier this year, a panel of United Nations aviation experts even called for an update of the decades-old supersonic noise standard by 2025.
(Excerpt) Read more at 19fortyfive.com ...
One word, as branDUHn might say: “united nations aviation experts”.
Environmentalists, with the emphasis on ‘mentalists’................
A cramped seat on the Concord cost about 3X more (working from memory) than a roomy first class seat on a 747.
Not many people were willing to pay so much more to cross the ocean twice as fast.
I don’t know if the laws of physics and economics have changed much since then.
Yeah, but, it’s it electric?
If not, environmentalist, aka: radical democrats, won’t allow it.
And what about chem trails?
I don’t have the right kind of ear plugs for a plane like that, not even just to listen to as an on ground observer.
It might help to finally clear my sinuses.
Sonic booms always startle me.
For the record:
I’ve got nearly 2M business air miles under my flabby butt. I am not now, nor was not when I was working, waiting for this.
The laws of physics are what they are, and at this level what we think they are hasn't changed in well over a century.
Engineering (what I do for a living) is the art and science of making them work for us instead of against us ... the big problem with supersonic flight over populated land is the sonic boom. I'm sure you've heard them ... annoying aren't they? Supposedly, the engineers working on the latest generation of experimental SST have managed to minimize the sonic boom to the point that it might not prevent flight over populated land. Whether or not it will make economic sense is a question I'm not qualified to answer. I seriously doubt anyone else on this thread is, either.
But can it be powered by solar panels?
Sonic booms are continuously generated by the shock wave coming off an aircraft operation beyond the speed of sound. Even restricting them to over water flights they had to ‘adjust’ the approach to JFK airport to allow the ‘sonic footprint’ to travel over sparsely populated areas (relatively speaking).
Saw a video on YouTube several years ago about why airlines take the same amount of time going from point A to point B as they did in the 1960’s.
Turns out that commercial jets are about 11% turbofans—similar to the small prop-driven commuter planes. This optimizes fuel consumption. They are also much quieter.
You can see this when you look at the back of an airliner’s engine, some of it is open.
Supersonic planes, almost all of them military, have no turbofan component with all the air going into the combustion chamber. They are also very loud.
So perhaps in addition to the noise of supersonic planes, there is the fuel consumption and demand aspect...are there enough people willing to spend thousands more to get across the pond in 2-3 hours rather than 6?
Maybe an aircraft engineer could explain this better than I did.
The Boom! Supersonic plane that UAL and AA put deposits on are nearly identical to the SST designs from 45 years ago (pre Concorde) so they will break windows and crack drywall if flown SS over populated land.
This at least is a new design that tries to minimize sonic booms, but the result is an ugly ass aircraft that isn’t optimized for passenger volume, so Supersonic travel is still non-ideal.
This thing would make a good lawn Dart.
All modern fighters use low bypass Turbofans.
Commercial planes have high bypass fans and subsonic exhaust.
The extra noise from a fighter comes from the supersonic exhaust, not the fan section.
The Exhaust nozzle of a fighter engine has a “converging diverging nozzle” (the turkey feathers opening and closing at the begining of Top Gun)
A Converginging diverging nozzle accelerates the subsonic exhaust of the turbine to above supersonic speeds.
We proles can drive our electric cars so nanzi, zuckerturd, gates, hillary, kerry, and the rest of the democrat elites can ride this in style.
In fact, they do use turbofans, but the bypass ratio in a civil airliner engine can be an order of magnitude larger than the afterburning turbofans used on fighters.
That would kill the redeye flights.
Because supersonic planes tend to have smaller passenger compartments and for us planes are mass transit. If given the choice between 300 passengers and a 3 hour flight or 100 passengers for a 1 hour flight we pack em in.
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