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SpaceX’s Falcon Heavy successfully launches

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Re: SpaceX’s Falcon Heavy successfully launches

#811

I feel like I must be crazy, but did anyone else notice that the two videos from the pair of boosters seemed like they were cloned from the viewpoint of a single booster? I don't mean they look similar. I mean they look like they came from the same video feed . When completing the touchdown, they both seem to land at the same pad -- you can see the flame of the other booster and the pad the other booster is landing a…

No.

Re: SpaceX’s Falcon Heavy successfully launches

#812
post #796
post #782

Earlier quoted context omitted.

The goal back then was to make things possible. Right now, especially with SpaceX shaking the competition up a bit, the process is making things cheaper, which enables space access for uses that have been cost-prohibitive in the past. However, I guess cubesats and tiny launchers are just as much a part of that development as SpaceX' work on reusability. And the landing shots are just damn cool.

Ok, so Musk is basically doing the job of the Chinese companies of the past: producing cheaper copy of other people's inventions. And yet, some call him "visionary" or "genius" :)

He isn't basically doing what you're describing at all in fact. :)

The launches are cheaper because of the breakthrough in being able to reuse the rockets by landing them.

That's the exact opposite of copying.

Re: SpaceX’s Falcon Heavy successfully launches

#813

Devil's advocate, here. Am I the only one that find it quite disturbing that a private corporation taking over more public space? In the long run this stuff will bite humanity at large in the butt.

It doesn't seem worse than private companies literally owning people's lives (and having the audacity to call it not slavery). But it seems this is where we're headed, some sort of dystopia ruled by wealthy people.

As for space launches - well, the US Gov did a "great job" at saving what they learned from building the Saturn V, can't imagine them being better at space exploration, either.

Besides, all of the planes and ships are built by private companies, and it's worked OK-ish so far.

Re: SpaceX’s Falcon Heavy successfully launches

#814
post #809
post #296

Earlier quoted context omitted.

Honestly it’s amazing how much better I understand this and other space stuff I’ve seen in the last year or two (like shows about Apollo, etc) since playing KSP. No better way to learn basic orbital dynamics out there.

SpaceX should create their own space simulator or buy KSP, let players test and sort out various problems - crowdsourcing! :D

They don't need to buy anything. Related visuals (models and textures of KSP rockets) were already made and are maintained by the community, and all they need to do to crowdsource a test is to post it on Reddit. I guarantee you, hundreds of players will try to one-up one another on that one.

(Hell, I might even be among them.)

Re: SpaceX’s Falcon Heavy successfully launches

#815
post #796
post #782

Earlier quoted context omitted.

The goal back then was to make things possible. Right now, especially with SpaceX shaking the competition up a bit, the process is making things cheaper, which enables space access for uses that have been cost-prohibitive in the past. However, I guess cubesats and tiny launchers are just as much a part of that development as SpaceX' work on reusability. And the landing shots are just damn cool.

Ok, so Musk is basically doing the job of the Chinese companies of the past: producing cheaper copy of other people's inventions. And yet, some call him "visionary" or "genius" :)

Inventing new things so we can do the old things cheaper in an equally safe or safer way. Not basically what the Chinese do.

Re: SpaceX’s Falcon Heavy successfully launches

#816

Did they need to modify the Tesla to make it vacuum worthy? Like, remove any fluids, remove any parts that might explode in the hot or cold of space, deflate the tires, etc. Note: I'm more interested in a scientific answer, as opposed to casual conjectures. Preferably from an engineer knowledgeable of such things. And specifically, the materials sciences aspect of how materials will survive in a vacuum.

Elon says, albeit casually, here in the press conference at 5m36s: https://youtu.be/sytrrdOPYzA?t=5m36s "We didn't really test any of those materials [...] it's just literally a normal car in space"

It would be pretty cool if they retrieve it later, replace the batteries... and it still works :D

Re: SpaceX’s Falcon Heavy successfully launches

#817

Earlier quoted context omitted.

What are you talking about. That gif is showing the fairing separation. There's no sphere.

amazing, is the car strapped to the outside of the rest of the ship? how does it remain so stable after the separation? by "sphere" i just meant the case it is shown inside of at the start, since the markings on the wall resemble motion tracking panels used for 3d projection. perhaps I just underestimate the precision and smoothness of the fairing separation, or am misunderstanding how the car is rigged so as to rema…

It's like putting a satellite into orbit, right? Up until the rocket stops burning, it's held in place by something, then it's released, then enclosure opens with minimal/nonexistent effect on the payload, leaving it out there... In this case, the car has enough velocity to float to it's Sun orbit, I guess.

Re: SpaceX’s Falcon Heavy successfully launches

#818

I feel like I must be crazy, but did anyone else notice that the two videos from the pair of boosters seemed like they were cloned from the viewpoint of a single booster? I don't mean they look similar. I mean they look like they came from the same video feed . When completing the touchdown, they both seem to land at the same pad -- you can see the flame of the other booster and the pad the other booster is landing a…

No.

It would be helpful if you explained what part of my comment you’re replying to.

Re: SpaceX’s Falcon Heavy successfully launches

#819
post #633

Earlier quoted context omitted.

>How did sci-fi get so disconnected from the actual future? The original Star Wars was made in 1977, and based heavily on World War 2 combat films (much of the space combat and the trench run on the Death Star was lifted - sometimes shot for shot - from a film called "The Dam Busters.") For reasons of continuity and tone, that mechanical aesthetic can't ever change much throughout the franchise, or else it wouldn't "…

Maybe they could explain it all away saying that in a previous era autonomous weapons were used and almost exterminated everyone in the whole star wars universe, so all parties including the empire and the rebels agreed to not make use of automatically controlled weapons or space craft. Or maybe software technology was lost and they are only able to use extremely rudimentary systems...

>Maybe they could explain it all away saying that in a previous era autonomous weapons were used (...)

Except that fully sentient AI is already commonplace in the form of droids, including battle droids.

This is a universe where a small robot that only speaks in clicks and whistles had to physically transport holographic "data tapes" about a moon-sized space station that can travel faster than light. A lot of it doesn't make sense when you think about it, but then it's supposed to be Flash Gordon with the serial numbers filed off.

Re: SpaceX’s Falcon Heavy successfully launches

#820
post #785

Earlier quoted context omitted.

Yep - Titanium is notoriously difficult to work with.

So difficult that the SR-71 leaked fuel before starts and had to be re-fueled right after take-off. https://en.wikipedia.org/wiki/Lockheed_SR-71_Blackbird#Fuel

The SR-71 took off with a small fuel load to reduce stress and improve engine-out performance, that is why it was refuelled immediately after take-off.

The mental image of it leaking so much fuel on the ground such that it needed immediate refuelling is a myth propagated extensively on the internet.

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