Orbit is a little bit of upwards velocity and a whole lot of sideways velocity. They only did the much simpler former.
These sub orbital flights are just barely over the line into what can be called space travel, and do nothing useful except letting them brag that 'they went to space'
https://en.wikipedia.org/wiki/Sounding_rocket
The delta-v differential between sub-orbital and orbital is tremendous, though.
At least cheaper than going to actual space and longer than using parabolic flights in planes.
Well, ICBMs are very useful, and only require sub-orbital velocities, though I don't necessarily want Bezos or Branson to get those.
ICBMs can be converted to carry a human in a tin-can on top into space, if you happen to find yourself in a space-race.
Some of the space launchers today either started life as an ICBM turned dedicated launch vehicle (Proton) or are decommissioned ICBMs turned launch vehicles (Minotaur)
https://en.wikipedia.org/wiki/Proton_(rocket_family) https://en.wikipedia.org/wiki/Minotaur_(rocket_family)
I think the deltaV's needed to place a warhead on the surface are significantly less than those needed to put a satellite into low-earth orbit.
https://en.m.wikipedia.org/wiki/Fractional_Orbital_Bombardme...
The other nuclear powers did not like it and it was scrapped. Not to mention that even if you might get the first shot this way, there will almost certainly be retaliatory strikes back on you.
And I think if they'd sent up other billionaires instead, it would have made no difference. The truth is that a lot of people are hurting badly, and to watch others do extravagant things that don't make a difference for the bettering of humanity now just pours salt on the 'wound' of poverty. For many people, it's visible proof of the gaps getting wider and wider.
I hear you there, but I don't understand why Musk gets a free pass then? He's just as rich as Bezos and just as out of touch with what the needs of average American.
I don't think any of the three are bad, but I do think there is a gradient in terms of ambitions/successes that puts Musk well ahead of Bezos (at least until New Glen launches) and Bezo ahead of Branson.
While Bezos/Branson's priorities seems slightly backwards to me, it isn't wholey unreasonable to take that stance that making spaceflight available to more people will increase the level of interest in spaceflight (even if the timing seems a bit tone deaf for that goal.)
Suborbital flight only requires 3,700 mph (6,000 km/h)
Highly recommend playing kerbal space program if you'd like to get a better intuitive understanding of the difference: suborbital flights are your second or third attempt - pretty easy, orbital flight will probably take you a dozen flights or so to figure out.
The only thing it may make cheaper is suborbital flights, which are essentially useless. You can't even launch satellites that low. So there's essentially no practical purpose for their tech, and their companies, besides bragging rights for rich guys.
A lousy metaphor we could use here is that in a world of automobiles, Bezos and especially Branson decided to research horses. It's not a very good metaphor - maybe a better one is someone trying a new entrant in the floppy disk category in 2021. Much like "Zip Drives" were able to make contemporarily larger floppy drives in their day (100mb instead of 1.3mb), you likely could make very good "modern" floppies in 2021, measuring in hundreds of gb, but they would still possess the fundamental flaws of the medium (being so easy to damage), and you simply couldn't get away from that. We abandoned it as a technological dead end for a reason.
They achieved something we already have the tech to do; the only thing that's special is that they paid for it all by themselves.
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Musk, on the other hand, has two feathers in his cap - the first is that they're working on tech that's already fundamentally useful and "has room to grow" in incremental improvement. Getting to orbit is fundamentally useful (it's the tipping point where you can start to do satellites, and even extra-terrestrial trips); and pouring R&D into making that cheaper is very helpful for humanity.
The other feather he's got in his cap is that the company he founded didn't just do some piddly "incremental improvements" that shaved a little bit off the cost of launch. We'd all be cheering if they'd shaved, oh, 10% of the cost away. That would be really good for humanity.
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But no.
They went so far above and beyond that it's absolutely daffy duck. They won the lottery. They didn't roll a natural 20; they rolled a d20 and the dice face on top said "50 million".
They invented reusable rockets - which everyone, including all the government space agencies, had written off as permanently impractical. The cost comparisons are just nuts — The cost of a space shuttle launch is something like 0.5-1.5 billion dollars. A similar launch from space x is something like, pessimistically, a few hundred thousand. It's like FIVE ORDERS OF MAGNITUDE. This is my first "allcaps" on HN, but it needs the emphasis. The thing that Musk's company (really; folks like Gwynne Shotwell deserve core credit here) did was a quantum leap that honestly - nobody else might have had the political capital to do. We might have gotten this a century earlier than an alternate timeline without him precisely because of the stupidity of "allocation of funding" - there's no practical reason why a government agency couldn't have done this; it's all social dynamics and groupthink.
It singlehandedly makes a lot of crazy, impractical things (like solar panels in space to solve terrestrial power problems) tip from pure fantasy into "gosh, maybe we could actually do this?" He's already rolling out Starlink, but there are an awful lot of really helpful things for real, contemporary problems on earth that "cheap space launches" could solve.
"One of these is not like the others."
Sending rockets to space is still very prone to failures. Failure rates for unmanned rockets where lower 40 years ago than they are now if you look at the trailing 10 year failure rates. Around 1 in 20 unmanned mission fails.
Failures for manned missions are less frequent, however noone can guarantee you, that the rate is lower than 1%.
https://space.stackexchange.com/questions/8566/what-is-the-s...
Do you have sources that indicate fabrication has not started?
I believe I was recalling another video tour, probably from last year, where they said "And this is where the assembled rockets will be stored" and the factory floor was empty. It's pretty cool that they've made so much progress since then!
Since you've edited your post, I'll respond to the rest.
> But they're also just carnival rides for Billionaires, and that's what gets on peoples nerves.
If Bezos or Branson had sent someone else up in their place, does that really change anything?
Sure, it's expensive and only the super wealthy can afford to go into space right now, but there are plenty of technologies in our past that only the wealthy could afford at first, but as time went on, they became more affordable.