Perhaps the 84 second burn overflowed the integer (2^6) and was caught by a 2^7s check (127s)
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- 3 years
there’s no way engine burn time is graduated in seconds on a spacecraft in 2023, that’s way too coarse
- 3 years
i can see doing one burn that is kind of rough, then evaluating the situation and applying some correction?
- Millie@lemm.eeEnglish3 years
Why do you expect the Russian space program to be using new equipment after the antique show of an invasion in Ukraine?
- 3 years
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.
- 3 years
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.eeEnglish3 years
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.
- 3 years
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.eeEnglish3 years
Uhh, don’t think it’s the propaganda that’s perpetuating the war. That’d be the invasion.
Found the Russian sympathizer though.
- 3 years
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…
- 3 years
This is Roscosmos we’re talking about here. First lunar mission in 25 years??
- 3 years
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?
- 3 years
Ah I think it’s Twitter’s new thing where you can’t see replies of your not logged in.
- 3 years
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 😆
- Ellenor et al Bjornsdottir@mastodon.topbot account3 years
@tiredofsametab @intelati @14th_cylon @wahming You’ve been harmed by timezones
- 3 years
Mistakes happen. For example, may I introduce you to NASA’s 125 million dollar Mars Climate Orbiter, which spent most of a year traveling to the Red Planet before ignominiously burning up because a Lockheed Martin programmer decided to write the thruster-firing calculations in Imperial units (feet and pounds) instead of following the specifications to use metric units (meters and kilograms).