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[New] Space Launch System / Orion Discussion Thread


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2 minutes ago, Kerbalsaurus said:

What is the flight plan for Artemis? I though it was orbital test mission, but on NASA's YouTube channel it says they'll be streaming a flyby.

Distant lunar orbit for a few weeks before return to orbit to test lunar reentry

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32 minutes ago, totalitor said:

Here I am sitting at home and watching live video from Moon. Very interesting.

 

Right? I won't even complain about the glorious 720p this time, seeing a powered lunar flyby live is so cool.

Also, Orion has just entered the far side of the moon - i assume by the time it has to start the burn it will be in direct contact with earth again, right? 

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1 minute ago, Beccab said:

Right? I won't even complain about the glorious 720p this time, seeing a powered lunar flyby live is so cool.

Also, Orion has just entered the far side of the moon - i assume by the time it has to start the burn it will be in direct contact with earth again, right? 

It will be performing the burn during LOS. If we're real lucky, they might have recorded it for later, but it won't be live.

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3 minutes ago, intelliCom said:

It will be performing the burn during LOS. If we're real lucky, they might have recorded it for later, but it won't be live.

Was the the plan for every launch window, or were we just unlucky it ended up synchronizing like this?

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Just now, Beccab said:

Was the the plan for every launch window, or were we just unlucky it ended up synchronizing like this?

Not sure. You'd have to ask the mission planners about that one, really. I would guess the former.

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10 minutes ago, Beccab said:

Was the the plan for every launch window, or were we just unlucky it ended up synchronizing like this?

All (practical) lunar orbit insertions for retrograde orbits needs braking burn behind the Moon. With modern tech it is easy but it was real problem during Apollo missions which had to also execute lunar orbit insertions and trans earth injections behind the Moon without communications to Houston.

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https://news.sky.com/story/watch-orions-flyby-of-the-moon-during-nasas-artemis-mission-12752363

 

Oh - and I can see stars in the same frame (for anyone who remembers this argument from the KSP2 sub)... 

 

 

 

 

 

 

 

 

...whenever it shows 'telemetry driven animation' on the screen 

Edited by JoeSchmuckatelli
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10 minutes ago, Minmus Taster said:

Any news on the solar sail? OMOTENASHI is gone but I haven't heard anything yet about NEAscout.

The lastest news I can find is that 20 hours ago the DSN tried to connect first from Canberra and then from Goldstone with NEA Scout, receiving no signal back either time. No DSN antenna is trying to contact it now, perhaps because it's in an unfavourable position

They should have more time than OMOTENASHI since there's no burns to make afaik, but at the same time the fact that unlike JAXA they were never able to get any signal from it isn't good

Edited by Beccab
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Was there any proposal to deploy a small lunar NRHO DSN relay sat from  Artemis I?  Seems like it could have been a great opportunity to make subsequent missions more secure with no loss of signal

I would guess that until CAPSTONE proves the orbit  viable it would be a big ri$k.

Can CAPSTONE do light weight relay work if it achieves NRHO?

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3 minutes ago, darthgently said:

Was there any proposal to deploy a small lunar NRHO DSN relay sat from  Artemis I?  Seems like it could have been a great opportunity to make subsequent missions more secure with no loss of signal

Iirc, NRHO already has no LOS during it's orbit - the problem is that Orion isn't going to NRHO, but a Distant Retrograde Orbit

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6 minutes ago, Beccab said:

Iirc, NRHO already has no LOS during it's orbit - the problem is that Orion isn't going to NRHO, but a Distant Retrograde Orbit

Ok, but there is no relay in NRHO, right?  And that is why Artemis had LOS, correct?

I thought, probably incorrectly, that one of the points of Artemis I was to pass through a point where a burn for NRHO could in theory be done, but continue on to distant retrograde for a return.  Why did I think that?  Neural crosslink with CAPSTONE maybe

So, can CAPSTONE do light weight relay work from NRHO if it succeeds?

That would be cool

Edited by darthgently
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