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NASA Astronauts Return Home in SpaceX's Crew Dragon Spacecraft [video]

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Re: NASA Astronauts Return Home in SpaceX's Crew Dragon Spacecraft [video]

#21
post #3

Not yet, not until re-entry. It's arguably the most dangerous part of the missions since launching on Falcon 9 has happened many times before. Both Soyuz and the Space Shuttle had fatal accidents on re-entry.

You're not wrong, but I think it's cool how much safer the generic capsule design is than something like the Shuttle. Really the Shuttle got a whole lot wrong—heat-intolerant aluminum structure and critical, sensitive machinery directly beneath a layer of tiles so fragile you can crush them in your hands (IIRC). SpaceX's Starship will probably be a lot more tolerant to defects in the heat shield because of the relati…

This is at the stage where you cant really make assumptions about what may happen because you don't know what could go wrong. (A.K.A you don't know what you don't know).

Re: NASA Astronauts Return Home in SpaceX's Crew Dragon Spacecraft [video]

#23

Earlier quoted context omitted.

You're not wrong, but I think it's cool how much safer the generic capsule design is than something like the Shuttle. Really the Shuttle got a whole lot wrong—heat-intolerant aluminum structure and critical, sensitive machinery directly beneath a layer of tiles so fragile you can crush them in your hands (IIRC). SpaceX's Starship will probably be a lot more tolerant to defects in the heat shield because of the relati…

This is at the stage where you cant really make assumptions about what may happen because you don't know what could go wrong. (A.K.A you don't know what you don't know).

I'm not claiming that OP or I are experts, but there's actually a pretty big body of knowledge for capsule re-entry. It's more 'known problems' than 'unknown unknowns'.

Re: NASA Astronauts Return Home in SpaceX's Crew Dragon Spacecraft [video]

#24
post #3

Not yet, not until re-entry. It's arguably the most dangerous part of the missions since launching on Falcon 9 has happened many times before. Both Soyuz and the Space Shuttle had fatal accidents on re-entry.

You're not wrong, but I think it's cool how much safer the generic capsule design is than something like the Shuttle. Really the Shuttle got a whole lot wrong—heat-intolerant aluminum structure and critical, sensitive machinery directly beneath a layer of tiles so fragile you can crush them in your hands (IIRC). SpaceX's Starship will probably be a lot more tolerant to defects in the heat shield because of the relati…

The Shuttle was built to bring down soviet spy satellites and spacecraft, so in that regard, it was the best design made.

Re: NASA Astronauts Return Home in SpaceX's Crew Dragon Spacecraft [video]

#26

Earlier quoted context omitted.

You're not wrong, but I think it's cool how much safer the generic capsule design is than something like the Shuttle. Really the Shuttle got a whole lot wrong—heat-intolerant aluminum structure and critical, sensitive machinery directly beneath a layer of tiles so fragile you can crush them in your hands (IIRC). SpaceX's Starship will probably be a lot more tolerant to defects in the heat shield because of the relati…

The Shuttle was built to bring down soviet spy satellites and spacecraft, so in that regard, it was the best design made.

Huh interesting. Do you have sources for that information?

Re: NASA Astronauts Return Home in SpaceX's Crew Dragon Spacecraft [video]

#27

Earlier quoted context omitted.

Well from what I’ve read the observable universe is fairly flat, but I was wondering what if we’re just living in a basin or on a plateau that extends beyond our observable reach? I suck at math though so I’ll just wait for theoretical astrophysicists to tell me interesting things on blogs.

I’ve always pondered a mobius strip with a river-like motion .

Would that be a mobius strip of universes? That makes me think of the central finite curve from Rick and Morty.

Re: NASA Astronauts Return Home in SpaceX's Crew Dragon Spacecraft [video]

#28

Earlier quoted context omitted.

The Shuttle was built to bring down soviet spy satellites and spacecraft, so in that regard, it was the best design made.

Huh interesting. Do you have sources for that information?

In the time it took you to ask, you could have been searching. This is the first result on "shuttle design airforce" in Google: https://en.wikipedia.org/wiki/Space_Shuttle_design_process#A...

Re: NASA Astronauts Return Home in SpaceX's Crew Dragon Spacecraft [video]

#29

Earlier quoted context omitted.

You're not wrong, but I think it's cool how much safer the generic capsule design is than something like the Shuttle. Really the Shuttle got a whole lot wrong—heat-intolerant aluminum structure and critical, sensitive machinery directly beneath a layer of tiles so fragile you can crush them in your hands (IIRC). SpaceX's Starship will probably be a lot more tolerant to defects in the heat shield because of the relati…

The Shuttle was built to bring down soviet spy satellites and spacecraft, so in that regard, it was the best design made.

Including features that are never used is bad design even if they don't compromise every other aspect of the design.

What mainly doomed the shuttle was the DoD requirement that the shuttle be able to pluck a satellite from a polar orbit in one orbit, making it necessary to include the massive wings so that it wouldn't be forced to land in the Pacific as the world rotated underneath it.

Re: NASA Astronauts Return Home in SpaceX's Crew Dragon Spacecraft [video]

#30

The ship departs from the station at 2 hours 19 minutes.

The video seems to be no longer live, so times have changed (?). Undocking now starts at 6m45s: https://youtu.be/13OkD0C_TWU?t=400

Physical separation is at 11m35s: https://youtu.be/13OkD0C_TWU?t=695

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