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Artemis II safely splashes down

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Re: Artemis II safely splashes down

#311

Glad that they're safe and sound. It's worth pointing out that this is the first extremely public, widely acknowledged high risk mission NASA has done in over 50 years. The Shuttle was risky, but it wasn't thought of or acknowledged by NASA as being risky until very late in its lifecycle. According to NASA's OIG, Artemis acceptable crew mortality rate is 1 in 30. Roughly 3x riskier than the shuttle. There genuinely i…

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Re: Artemis II safely splashes down

#312
post #149
post #58

Earlier quoted context omitted.

> That X decades later we accept, with all our advancements in tech, a weaker system than ever before how do you keep past performance while stop performing it for XY decades?

A lot of advancement is multipurpose. CNCs are more accurate than machinists, computers are faster. And we have a lot of the technical knowledge written down.

Machinist never stopped working even after advanced CNCs proliferated. Humans had records of how things were made and yet new generations had to relearn it - and fail in the process.

This mission is not about sending stuff out to deep space. Its about sending out new generation of humans to deep space.

Even if you could guarantee that these new humans have exact same experience of past humans, can we guarantee that past decades simulations or theoretical knowledge acquired - while NOT actually doing something - will effectively reduce the chances of mortality?

Re: Artemis II safely splashes down

#313

Earlier quoted context omitted.

Notwithstanding that this mission critically relied upon Canada, UK, EU, Japan, Taiwan, and contributions from many other countries.

All those countries are essentially American vassals. No shade to them, just stating the reality, and not really sure why we need to keep pretending. There's no shame in that. It's often the smartest move to join forces with the big guy in the block!

You need to travel more.

Re: Artemis II safely splashes down

#314

Earlier quoted context omitted.

Yes, and the memories of Apollo are made rosy by hagiography. I even wrote an entire thing to explain why, https://1517.substack.com/p/1-in-30-artemis-greatness-and-ri... (yeah, shameless plug, sorry - it's more for the citations than not. You can read the standards and reports I've linked to) But if I'm allowed to repeat myself from elsewhere in the thread and the meat of the above thing, It's physically not possibl…

Wouldn’t the soviets or any other adversary prepare against letting NASA capture their satellites? You need a very small amount of C4 in the satellite to destroy the shuttle in the event of capture. Tampering with other entity‘s satellites can best be done with satellites. That also frees resources needed for bringing life support systems to orbit.

But at that point if you're building in a self-destruct for a weapon that can be so dangerous it's worth sending a shuttle to take it away from you, surely it's better to adversarially trigger the self-destruct and not bother sending the shuttle. So the C4 option might simply be a bad idea: make it more difficult and costly to remove your weapon, rather than triggering your own self-destruct.

Re: Artemis II safely splashes down

#315

Impressive mission but I feel it's not capturing the public attention because it's actually a step back from the mission 50 years ago when they actually landed men on the moon with tech that was orders or magnitude simpler and less powerful.

A diverse and inclusive crew, a publically-funded mission, an emphasis on science and discovery, and government investment in a long-term strategy, not a quick politcal win.

This current administration has made sure these things never happen again, Artemis is very much the swan song of an America that has died. I am not interested in watching our corpse twitch and calling it life.

Re: Artemis II safely splashes down

#316

Earlier quoted context omitted.

It honestly says something about how absurdly risk averse our society has become that an 1/30 chance of death is considered too high for a literal moonshot. You can advertise a 1/3 rate of slowly choking in vacuum and I bet you will still get a five mile long queue of people signing up for the mission. If you want a historical comparison, over 200 men left with Magellan on his voyage around the globe and only 40 retu…

Agreed, but people were often forced into those conditions. Or were forced to make an impossible survival decision. Were Magellan’s men volunteers? For example, in the incident with The Wager, 1,980 men left on 6 ships, and only 188 survived. Men of the original men were press-ganged (kidnapped to crew these ships), and a lot of them were even taken from an infirmary and not in great health. And, of course, condition…

Maybe we should be glad that afawct none of the people exposed to the risks of artemis ii mission were force on it against their will. I'd bet the even in The Wager you would have have some clear headed people who knew the risk and still chose it

Re: Artemis II safely splashes down

#317

Earlier quoted context omitted.

Thanks! note - I can't verify any of the following, it's more - for lack of a better term - aerospace nerd fan theory at this point. Post-collapse, people think that the Buran justification was paranoia. But based on what I've read / seen (though this is getting hard to source, so I might be just good ol' hallucinating here), they weren't entirely wrong. The subtext around that large payload bay had to do with the So…

The only people who took seriously the idea of a Shuttle FOBS were the Soviets, and frankly not even all of them; as far as I've ever seen credible evidence to substantiate, it never went much past a single position paper from the early 80s. The idea that Buran was meant as a MAD-restoring FOBS has, so far as I know, not even that much support. (If you know of primary sources, in translation or otherwise, please link…

> If Reagan had violated the Outer Space Treaty - via NASA of all agencies! - how do you imagine it'd have stayed secret over these forty years just past?

While I have no reason to believe this particular escapade, I do expect that there are a thousand such wild stories that have remained secret. Watergate seems obvious and explosive to moderns, but at the time it could easily have gone undiscovered or unremarked. How many other similar scale plots, domestic and international, succeeded or failed without ever being surfaced into the history books? A few? Dozens? Hundreds? ¯\_(ツ)_/¯

Re: Artemis II safely splashes down

#318

Earlier quoted context omitted.

The '70s were not hopeful. Economy was terrible, Vietnam ended but still hung over the culture, Watergate, Three Mile Island, Iranian hostage crisis, cold war threatening to turn hot at any moment, double-digit mortgage rates.... and Disco.

Some parts of the US economy may have been terrible (perhaps due to the increased oil price, which became closer to the true cost of oil than that of the previous cheap oil, which was so cheap because it was basically stolen by USA), but in another parts of the world the economy was great in comparison with what followed after 1980. Moreover, even in the US, the seventies were the greatest time for the electronics an…

Patagonia is up there for me in current day. Let my people go surfing by the founder is a great read IMO

Re: Artemis II safely splashes down

#320

Earlier quoted context omitted.

> Artemis acceptable crew mortality rate is 1 in 30. This seems insane to me. That X decades later we accept, with all our advancements in tech, a weaker system than ever before. That if we send 30 people we _accept_ that one is possible to die. That's the starting point? That's what we document as acceptable?

Yes, and the memories of Apollo are made rosy by hagiography. I even wrote an entire thing to explain why, https://1517.substack.com/p/1-in-30-artemis-greatness-and-ri... (yeah, shameless plug, sorry - it's more for the citations than not. You can read the standards and reports I've linked to) But if I'm allowed to repeat myself from elsewhere in the thread and the meat of the above thing, It's physically not possibl…

>It's physically not possible at our current level of technology to make this "safer"

Absolutely it is, if NASA was not constrained by congress to use shuttle components to build the spacecraft, they could have had double the payload mass capability at least (the Saturn V was almost twice as capable, we should be able to do a little better now). This would provide tons of extra margin for safety, and allow a shorter and thus safer route to the moon as well.

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