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Boeing Starliner, leaving its crew behind, lands in New Mexico

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31–40 of 79 posts

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#31

Is this the first time a spaceship disembarked from a space station and landed back on the ground, all while unpiloted?

No, that’s also exactly how the previous Starliner mission operated. Its also how the first Starliner mission was supposed to operate, but Boeing mis-set their wristwatch and f’d up the ISS rendezvous.

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#32

Is this the first time a spaceship disembarked from a space station and landed back on the ground, all while unpiloted?

No. SpaceX's Dragon spacecraft has a cargo variant which regularly makes uncrewed missions to the ISS and back (and was doing so for several years before they ever flew with people). There are other uncrewed spacecraft such as Cygnus, but not all of them return to Earth with intent to land; I don't know off the top of my head which was the first one to do so.

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#33
post #18

I'm genuinely curious what has happened in the past 50 years that we can't iterate on already successful concepts? Did we have a higher risk tolerance back then? Is Boeing genuinely this bad? Not to sound too cliched, but we put a man on the moon. We put a CAR on the moon. Why can't the successors of those same companies be trusted to retrieve two people from LEO?

(I worked at SpaceX) Two words: flight heritage. Successful concepts are very often reused. For example, heat shields, parachute landings, sea landings, air bags for landings on hard land, etc. Now, let me try to explain this in something similar: cars. Cars are all pretty much the same. They have a steering wheel, 4 tires, transmission, engine, etc. The parts all do the same thing in different cars, but we don't alw…

You mixed up Marce Recognisance Orbiter (still in Mars orbit) with Mars Climate Orbiter (part of Mars due to unit mixup).

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#34
post #13

Earlier quoted context omitted.

Not too wrong as it made it back to Earth. > Did we have a higher risk tolerance back then? NASA lost enough people during their "higher risk tolerance" epoch that they don't want to go through it again. Challenger and Columbia were such huge traumas each time...

> Not too wrong as it made it back to Earth. The contractual requirement was for max 1-in-1000 probability of loss of crew on re-entry. Let's suppose, for the sake of the argument, that due to these thruster issues, the actual probability had increased to 1-in-100. In that scenario, it is totally expected that Starliner made it back to earth in one piece – there was a 99% chance it would happen. Yet simultaneously, 1…

The bottom line is that there was uncertainty that couldn't really be disentangled from various other Boeing issues over the past couple years. As a result, even if nothing happened there would have been no shortage of criticism that NASA was behaving recklessly so the rational behavior was to proceed in the apparently prudent manner.

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#35
post #20

Earlier quoted context omitted.

? The Starliner landed successfully, so we have shown that we can iterate.

The Starliner only landed . It didn't successfully achieve its mission. In fact, it 100% failed.

Again - it is not it first fucked up test flight. :P

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#36

I'm genuinely curious what has happened in the past 50 years that we can't iterate on already successful concepts? Did we have a higher risk tolerance back then? Is Boeing genuinely this bad? Not to sound too cliched, but we put a man on the moon. We put a CAR on the moon. Why can't the successors of those same companies be trusted to retrieve two people from LEO?

The new kid on the block is some cult like mentality that dictates:

you have to pretend to be stupid, otherwise the bogeyman gonna come for you

it really is mind boggling, but here we are, we have arrived into the zone of full retardedness in 2024

youtube is full with "look how idiot I am, although I serviced this nuclear reactor, but still..." kinda videos:

I spent 55 days creating this "whatever"

I broke my new ferrari next day, that I spent 200 days repairing

...

and the list goes on

maybe the aliens are riled up that they will lose control over Earth, or smth like that, and they now beam the full retard signal :D

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#37
post #7

I'm genuinely curious what has happened in the past 50 years that we can't iterate on already successful concepts? Did we have a higher risk tolerance back then? Is Boeing genuinely this bad? Not to sound too cliched, but we put a man on the moon. We put a CAR on the moon. Why can't the successors of those same companies be trusted to retrieve two people from LEO?

> I'm genuinely curious what has happened in the past 50 years that we can't iterate on already successful concepts? I think SpaceX has been doing a great job of that, with Crew Dragon. > Did we have a higher risk tolerance back then? Yes, but also fewer options. This is the first time NASA has ever had a choice between two completely different American spacecraft to return crew on. It is like if you own two cars, an…

Didn’t get a ton of grants from the government? Like $15B over the last 20 years.

https://qz.com/elon-musks-spacex-and-tesla-get-far-more-gove....

Is that not “cost-plus?”

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#38
post #33
post #18

Earlier quoted context omitted.

(I worked at SpaceX) Two words: flight heritage. Successful concepts are very often reused. For example, heat shields, parachute landings, sea landings, air bags for landings on hard land, etc. Now, let me try to explain this in something similar: cars. Cars are all pretty much the same. They have a steering wheel, 4 tires, transmission, engine, etc. The parts all do the same thing in different cars, but we don't alw…

You mixed up Marce Recognisance Orbiter (still in Mars orbit) with Mars Climate Orbiter (part of Mars due to unit mixup).

ah yes you are totally correct, thanks!

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#39

I'm genuinely curious what has happened in the past 50 years that we can't iterate on already successful concepts? Did we have a higher risk tolerance back then? Is Boeing genuinely this bad? Not to sound too cliched, but we put a man on the moon. We put a CAR on the moon. Why can't the successors of those same companies be trusted to retrieve two people from LEO?

Although that happened over 50 years ago, and we can’t make the same exact designs, the physics is the same and well understood. Technology has evolved, and has given us more tools. Similar cultures can be made again that support that kind of work. What’s missing is we need better cultures. I’ve been in engineering cultures that are dominated by management desires to cut costs and deliver on schedule. Engineering exc…

Interesting thought. Could there also be the gradual evaporation of the old culture of fear? The 1940s through the 1960s fear of other countries, races, and ideologies?

I wonder if the fear suppressed the natural behavior of Jim McNerney and others, keeping them from sowing division within the company because of the perceived danger from outside?

Here are some other examples, where today these might sound like an excuse for aggressive business behavior, instead of a unifying mantra --

Andy Grove, "Only the paranoid survive"

Dick Cheney, "Principle is okay up to a certain point, but principle doesn't do any good if you lose."

(Yes, yes, he's outing himself as unprincipled; I'm quoting him intentionally since people were still being people all throughout; does this show the larger populace wide zeitgeist?)

John F. Kennedy, "We choose to go to the Moon in this decade and do the other things, not because they are easy, but because they are hard."

I think it's interesting how the same thought can sound different when my mind is set in different contexts.

Re: Boeing Starliner, leaving its crew behind, lands in New Mexico

#40

I'm genuinely curious what has happened in the past 50 years that we can't iterate on already successful concepts? Did we have a higher risk tolerance back then? Is Boeing genuinely this bad? Not to sound too cliched, but we put a man on the moon. We put a CAR on the moon. Why can't the successors of those same companies be trusted to retrieve two people from LEO?

Today's space flight has many additional constraints compared to 1960's space flight. For one thing, we try to avoid as much as possible hydrazine and other very toxic propellants. For another, there's a great push to reducing cost - reusability is a big part of that. Also, any component we can save weight on, we can send more mass to orbit. So we use modern design methods and materials to reduce weight.

All these changes mean, pretty much, that we need a new capsule (or more radical design, e.g. Starship).

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