/sci/ - Science & Math

>>12366498
People weren't willing to pay the price. It costs a lot to go faster than sound for not much gain.

>>12366507
Is anyone trying to make it more cost effective though? We should not give up on supersonic commercial flight

>>12366509
ever heard of elon musk?

>>12366509
The big thing now is trying to go supersonic without the "boom". I'm not in the industry so idk how much of a meme that is.

>>12366514
yeah but i haven't heard him talking about regular commercial flights. has he?

>>12366519
yes, he said his starship rocket can be used for suborbital passenger flights, like ny to tokyo in less than 2 hours

>>12366498
dysgenic selection for intelligence and the destruiction of proper national structures

>>12366529
anon, do you think this will be commercially affordable to most people?

>>12366509
It can't be done, super sonic flight is by design expensive and people just don't want to pay thousands of dollars to save couple hours in air from a trip that will still take them 7-10h. Concorde has a range of just 7200km and can carry 100 passangers, dreamliner can carry 300 passangers to 13000km on the same amount of fuel with a cabin twice as large meaning you can fit individual luxury bed/chair units for the business travellers allowing them to work or rest much easier while on board. Dreamliner (and other modern planes, just using it for the sake of example) is much more incredible than big engine go boom plane, it's just less zoomer.

>>12366542
>commercially affordable to most people?
no, but neither was the concorde

>>12366550
but i assume that it will be even more expensive than concorde

>>12366550
isn't that the whole point of the thread?
>why don't we see it more?
it's too expensive
>isn't elon musk making it?
yeah but it'll still be prohibitively expensive

>>12366584
hard to tell, rockets can save fuel on long flights by not having to deal with atmospheric drag during most of the flight

Commercial super sonic planes are pointless now days due to the speed of communication and the internet
the appeal of super sonic commercial flights was speed for business traffic, getting high level executives from place to place fast, for business meetings, on site work ETC
The internet has made it so that meetings can be done without the need for travel, and you can do on site visits without needing to be on site, so while some people may need fast transit, there aren't enough people to justify the investment in a form of transportation that's banned over most areas to begin with (sonic booms destroy infrastructure LMAO)
Also the concord was incredibly expensive per flight, while not being able to seat a lot of people, due to needing a thin, long cabin

>>12366593
>isn't that the whole point of the thread?
the thread was never about super/hypersonic flight being affordable to average joe, it is abut it existing at all

even it only the super rich can afford flying in a starship it would still be a thing

>>12366498
It was expensive to develop, expensive to produce, expensive to operate, and expensive to travel into. Other than this, one thing that's not been mentioned is that nobody wants sonic booms over their heads on a regular basis, so this hugely restricts where a supersonic commercial route can be, moreover it restricts the flight speed on populated areas, and supersonic wings are notoriously inefficient at low speeds.

>>12366604
it's just that the first post mentioning el*n musk was responding to "is anyone trying to make it more cost effective"

>>12366613
read >>12366596
also rockets can have cheaper maintenance than airplanes because less moving parts and no vibration while in outer space

>>12366632
I hope you aren't actually being serious because in no world will a rocket save you fuel or be easier to maintain than an airplane.

>>12366516
>idk how much of a meme that is
I think it's feasible to an extent. When supersonic fluids get perturbed there is always at least a mach wave, which is infinitesimal (and isoentropic); when there is a high enough pressure jump, that wave becomes a shockwave (that's highly non-isoentropic) that has an intensity related to how much the fluid has to decelerate in the shock. If instead of a single shock you can have many different shock that slow down the fluid more gradually, I assume you can reduce the overall intensity of the sonic boom, at least at ground level.

>>12366708
planes have lots more moving parts, rockets are actually simpler machines

except the space shittle, but that was kerbal tier engineering

because the military wants orbital drop missiles which would make air craft drops obsolete

>>12366805
>orbital drop missiles
isnt that just ICBMs?

elon musk wants to take earth travel underground with something like a vaccum tube

>>12366818
He probably means satellites carrying warheads and that get released from orbit. Something highly illegal and already entirely possible.

>>12366839
>highly illegal
yeah, but who is gonna sue the country with nuke satellites?

https://www.youtube.com/watch?v=pq5zfZiRx3s

>>12366498

>>12366859
You do realize there already IS a nuclear deterrent in the hands of many countries of the world, don't you? I mean, you don't need to drop nukes from space when you can just launch them from a submarine parked near the coast. Even in this madness however governments realized that space should be kept free from this shit.

>>12366897
this.
or how about gravitational waves

>>12366907
how does that change anything?

>country launches nuclear space platform
>other countries REEEEE
>nothing happens because nuclear deterrence
>other countries just launch their own nuke satellites
>everybody REEEEEs but nobody fires

>>12366937
>someone hacks a nuclear satelite array

>>12366959
>the password was 12345678

>>12366967

>>12366967
https://nakedsecurity.sophos.com/2013/12/11/for-nearly-20-years-the-launch-code-for-us-nuclear-missiles-was-00000000/

>>12366509
>We should not give up on supersonic commercial flight
There is no economical niche for supersonic commercial flight any longer.
The people that used those were primarily businessmen going to meetings, which made its speed attractive, but nowadays anyone can do a meeting on Zoom for the same effect.
The only place that offer some promise for civilian supersonics are private jets for the superrich rather than something for the common man.

>>12366839
Illegal? For nation-states? There's a treaty in which all of the signatory states agree to not put weapons into space but like all treaties, if you're a major military power, you can withdraw any time you want or simply break the treaty.

tangentially related, but besides elon's meme magic, how is the field of aerospace going along anyways?
are people afraid that the retirement wave is going to cause it to stagnate?

>>12366498
Liquid cooled electical system. Pain in the arse.

>>12366498
It was thought people would pay for speed, but nope people want to pay as little as possible.

>>12366498
Capitalism won.