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Artemis I Launch Attempt Scrubbed

blogs.nasa.gov

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Re: Artemis I Launch Attempt Scrubbed

#91

Post by tiborsaas »

endymi0n wrote: post #73

Does anyone get the point with Artemis? Because I really don‘t. To my untrained eye the current outlook on the program looks like that rocket is right now only supposed to make two roundtrips along the moon — and then in that third „Starship HLS“ mission Artemis’ only job is to take up the astronauts to orbit: while Starship (notably designed to be human rated) will be doing all the heavy lifting of the mission. In t…

They have the goal to build a moon base and establish human presence there. This could lead to better research and we could see the start of the industrialization of the moon. This looks like something governments like to do and do it in government style :)

Their site is a good start: https://www.nasa.gov/specials/artemis/

And I've just skimmed this, but looks like a decent comparison of SLS vs Starship:

https://everydayastronaut.com/sls-vs-starship/

Re: Artemis I Launch Attempt Scrubbed

#92

Post by wumpus »

theteapot wrote: post #87
allenrb wrote: post #9

Consequences of choosing the wrong first stage fuel (hydrogen) are many. Those tiny molecules want nothing more from life than to sneak through the smallest of openings. Well, possibly second to mating violently with oxygen.

Worked pretty well for 135 shuttle missions.

Let's see: killed a ton of people, was extremely expensive, ...

Re: Artemis I Launch Attempt Scrubbed

#93

Post by jeffrallen »

adastra22 wrote: post #71
gonesilent wrote: post #70

Earlier quoted context omitted.

NASA TV loves to show a great infographic of how many parts have flown to space before and have been reusable... can't help but yell in my mind.. and that's the last time they'll be reusable.

Those engines belong in a museum.

Maybe we should just park the turkey in the VAB and turn the VAB into a museum.

Re: Artemis I Launch Attempt Scrubbed

#94

Post by eternalban »

allenrb wrote: post #9

Consequences of choosing the wrong first stage fuel (hydrogen) are many. Those tiny molecules want nothing more from life than to sneak through the smallest of openings. Well, possibly second to mating violently with oxygen.

How about magnetic containment? Does ionized hydrogen combust well or not?

Re: Artemis I Launch Attempt Scrubbed

#95

Post by jeffrallen »

Teever wrote: post #50
yarpnird wrote: post #43

Earlier quoted context omitted.

Think about all the work done by people that you are discounting...

What is the point that you're trying to make here? I'm sure we've all experienced situations where we realize that the work we're being paid to do is futile and will never reach achieve it's intended purpose. It's really demoralizing but the thing to remember in that situation is that you're still getting paid. Would you rather be an aeronautical engineer who gets paid and doesn't launch of a rocket, or an aeronautic…

I would rather NOT be the engineer who pays taxes so that another engineer makes something that will never fly.

Re: Artemis I Launch Attempt Scrubbed

#96

Post by kylegordon »

KennyBlanken wrote: post #52
Angostura wrote: post #45

Earlier quoted context omitted.

It’s a big, complex project and it’s failed two tests. I’m happy to take the bet that it will launch successfully

It's a big complex project that legislators decreed should re-use ancient engines and structural components from the shuttle - a project that was the world's first space-faring barrel of pork, infamous for its operating expenditures. One of the arguments for doing so was that the engines were "proven." checks news story Oh hey, it's the engines that are causing these delays. NASA has been so over-budget on the projec…

Outright wrong.

"Multiple troubleshooting efforts to address the area of the leak by reseating a seal in the quick disconnect where liquid hydrogen is fed into the rocket did not fix the issue"

Re: Artemis I Launch Attempt Scrubbed

#97

Post by jeffrallen »

DougWebb wrote: post #31
the_third_wave wrote: post #15

I assume this means the SRBs need to be disassembled to replace the sealing between the segments seeing as how these were stacked beginning in January 2021 [1] and the sealing is guaranteed for 12 months. This has already been extended for 7-8 months but if the launch is to be postponed until October or later they're coming up to 2 years: The joints connecting each piece of Space Launch System’s five-segment rocket m…

Yeah, it's not like NASA has ever had a problem ignoring their own procedures when it comes to the seals on these kinds of rockets...

Those who do not learn from history are doomed to... blow up their rockets?

Re: Artemis I Launch Attempt Scrubbed

#98

Post by koheripbal »

wumpus wrote: post #92
theteapot wrote: post #87

Earlier quoted context omitted.

Worked pretty well for 135 shuttle missions.

Let's see: killed a ton of people, was extremely expensive, ...

A ton? Relative to what space program? Or do you mean a physical measurement of the weight of people?

Re: Artemis I Launch Attempt Scrubbed

#100

Post by colordrops »

yarpnird wrote: post #43
madaxe_again wrote: post #25

Earlier quoted context omitted.

I have my doubts that it will ever launch - the way things are proceeding, they’ll miss October, push to ‘23, and will then end up with parts and systems ageing out due to wear and duty cycles - the rollback to the VAB alone incurs significant wear. Meanwhile, starship will see its first orbital flight (likely not before a few RUDs) while SLS just grows mould. That said, the whole purpose of SLS was to provide jobs a…

Think about all the work done by people that you are discounting...

A lot of work is put into making porn, facebook games, prayer, cigarette manufacturing, the gambling industry etc. I'm not saying these are all useless things, but most people wouldn't bat an eye at someone "discounting" their work. If the work going into SLS doesn't achieve anything, then they discounted the work themselves, no need for a 3rd party.
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