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Perhaps the 84 second burn overflowed the integer (2^6) and was caught by a 2^7s check (127s)

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[-] fiah@discuss.tchncs.de 32 points 1 year ago

there's no way engine burn time is graduated in seconds on a spacecraft in 2023, that's way too coarse

[-] 14th_cylon@lemm.ee 6 points 1 year ago

i can see doing one burn that is kind of rough, then evaluating the situation and applying some correction?

[-] Millie@lemm.ee 2 points 1 year ago

Why do you expect the Russian space program to be using new equipment after the antique show of an invasion in Ukraine?

[-] leviosa@programming.dev 8 points 1 year ago

Every country uses a combination of older and newer equipment in any war. The war propaganda wizards just try to make things like that look unique to Russia.

[-] Millie@lemm.ee 1 points 1 year ago

I don't think most countries are using first aid kits from the 70s.

[-] leviosa@programming.dev 5 points 1 year ago

I would take what our jingoistic media and talking heads say with a very large pinch of salt. It's quite disrespectful to Ukrainian soldiers to say they've been facing an "antique show of an invasion", not to mention Russian engineers. Propaganda aside, both sides have fought hard in what has been a very modern war.

[-] Millie@lemm.ee 1 points 1 year ago

I've more paid attention to Ukranians' accounts of events than major media coverage. Lots of pictures of really old tanks being dragged away by farm equipment and other extremely dated supplies being found. If this is anyone's propaganda it's Ukraine's, in which case I'm happy to participate.

Nobody said it hasn't been hellish for Ukraine, or that it hasn't been a hard fight. Even if they were equipped with entirely WW2-era supplies, an invasion is an invasion, and by all accounts this has been a particularly cruel and brutal invasion.

I really don't care at all about being fair to Russian engineers at the moment.

[-] leviosa@programming.dev 1 points 1 year ago

If this is anyone’s propaganda it’s Ukraine’s, in which case I’m happy to participate.

Why is that? It's a blood bath and we shouldn't support any propaganda that perpetuates wars.

[-] Millie@lemm.ee 1 points 1 year ago

Uhh, don't think it's the propaganda that's perpetuating the war. That'd be the invasion.

Found the Russian sympathizer though.

[-] leviosa@programming.dev 1 points 1 year ago* (last edited 1 year ago)

Even the phrase "Russian sympathizer" is propaganda. Simple messaging sinks in.

I just have an interest in the wars around the world that the West (the UK, USA, Israel, France) are magically omnipresent in and around. With of course completely coincidental geopolitical prizes to win, as 'we' play Team NATO World Police around the world after the first rounds of our Confessions of an Economic Hitman tactics fail. The same old players pop up in every new episode of their perpetual war plan.

This is another episode. All wrapped up in a completely independent narrative with a different cartoon mad man to fight and a nice humanitarian angle so that people get all emotionally attached and don't join the dots.

[-] ChrisLicht@lemm.ee 3 points 1 year ago

Looking forward to T-18 sightings by this time next year . . .

[-] Millie@lemm.ee 1 points 1 year ago

Is that like a robot infant Arnold?

[-] colonial@lemmy.world 19 points 1 year ago

Why in God's name would you use a 6-bit signed integer for anything on a spacecraft? I know space-certified chips are pretty barebones, but surely not that bare bones...

[-] intelati@programming.dev 4 points 1 year ago

This is Roscosmos we're talking about here. First lunar mission in 25 years??

[-] IWriteDaCode@programming.dev 12 points 1 year ago* (last edited 1 year ago)

The tweet you link didn't indicate that. It said that an engine failure likely caused the overrun, running for 127 seconds instead of the planned 84. Why would something have a 2^7 int size check?

Edit: Quoted

The head of Roscosmos Yuri Borisov said that the main cause of the #Luna25 crash was an engine failure. Instead of the planned 84 seconds, he worked 127 seconds.

Am I missing something?

[-] intelati@programming.dev 2 points 1 year ago

There's further discussion of possible explanations in the replies

[-] IWriteDaCode@programming.dev 5 points 1 year ago

Ah I think it's Twitter's new thing where you can't see replies of your not logged in.

[-] TehPers@beehaw.org 3 points 1 year ago

Nitter link. This shows replies.

[-] 14th_cylon@lemm.ee 11 points 1 year ago* (last edited 1 year ago)

what do we say to the god of software bugs ruining our space exploration? not today!

one of these days we will finally say it, but... not today 😆

https://en.wikipedia.org/wiki/List_of_software_bugs#Space

[-] wahming@monyet.cc 9 points 1 year ago

Not today, because the date overflowed a counter somewhere.

[-] tiredofsametab@kbin.social 19 points 1 year ago

Days since last timezone incident: -1

[-] ellenor2000@mastodon.top 3 points 1 year ago
[-] TehPers@beehaw.org 1 points 1 year ago

When your timezone handling doesn't handle time dilation...

this post was submitted on 21 Aug 2023
73 points (94.0% liked)

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