Björn 🦊 now at @techniker.bsky.social retweeted
One of the problems engineers had with recovering Voyager 1 was there was no emulator or assembler for the computer they had to reprogram.
Vintage computer fans had wanted to document this hardware for years, but when we asked NASA for info they said no.
Finally someone tracked down some old JPL memos in a filing cabinet in Kansas and got all the information needed to build and emulator for the hardware.
Imagine how much easier the Voyager 1 recovery would have been if NASA had just said 'Yes' to those inquisitive vintage computer nerds a decade ago.
zanehambly.com/voyager
The new @IKEA #TOFSMYGGA and #GRILLPLATS #matter over #thread plugs are really nice and cheap. Even with apparent & reactive measurements!
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What the f*** did I just whitness!?
This is a absolute fucking mess.
Trump and Vance attacking President Zelensʹkyj in the Oval Office.
Zelensʹkyj is a far greater man than either of them could ever be!
#zelensky #trump #whitehouse #disgrace
cloud.sixtopia.net/s/kMmRMRj…
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Björn 🦊 now at @techniker.bsky.social retweeted
We were chatting in the ops room about memorable visits and one I remember with a smile is when I got a call from Greg(my right) our visitor center volunteer reporting an invasion of furry animals. I went up and invited them in for a photo in front of DSS43. It made a great shot!
I'm intrigued if maybe, maybe some flash media might have survived the violent implosion, pressure and heat... 12/x
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...to delamination or localized stress points, potentially /delaying/ failure under deep-sea pressure.
After the loud bang event (dive 80), significant deviations in strain data can be observed with each consecutive dive: 10/x
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That the H-axis has a significantly higher shift can be explained by how the carbon fibre is wound.
In the case of the Titan submersible, introducing 45° layers in addition to the primary 0° or 90° layers would have provided better stress distribution and improved resistance..9/x
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The acoustic data that matches the exact time of the load shift captured by the strain gauge: 8/x
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...and structural shifts, possibly due to delamination or adhesive failure between layers.
This failure could also be exacerbated by the multi-cure process, where slight imperfections in bonding could grow into weaknesses as stress builds.7/x
This can be seen in the RTM Data too:
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When the sub resurfaced and external pressure decreased, this stored energy, previously constrained by the immense water pressure, could have been released instantaneously, causing a loud bang... 6/x
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...energy builds until it reaches a breaking point, causing an abrupt failure or crack propagation as the pressure differential changes rapidly during surfacing. 5/x
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...no longer be able to sustain the internal stresses that were held in check by the pressure at depth.
The Rhino liner on the outermost layer wouldn't significantly contribute to structural integrity but might mask visible signs of internal stress. Therefore, this stored... 4/x
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When surfacing, the rapid reduction in external pressure could trigger a sudden release of stored strain energy as these stress points give way, leading to the loud bang the crew reported. This energy release could happen because the carbon fiber and adhesive bonds might... 3/x
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This layered bonding process can create internal stress points between cured layers, especially at the adhesive interfaces. Over time, particularly under deep-sea pressure, micro-failures like delamination (separation between the layers) or adhesive breakdown can develop. 2/x
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Some thoughts about the #OceanGate #Titan implosion:
In this construction process, every 133 layers of carbon fiber are cured, and glue is applied before the next set of layers is wound. 1/x
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Björn 🦊 now at @techniker.bsky.social retweeted
Anlässlich des Tags der Deutschen Einheit wünsche ich all unseren deutschen Freundinnen und Freunden, dass sie ihre nationale Einheit bewahren und Europa sowie die Welt weiterhin im Sinne unserer gemeinsamen Werte Freiheit, Leben und Demokratie vereinen.
Die Wiedervereinigung Deutschlands vor 34 Jahren war ein wahrhaft inspirierendes Ereignis in der europäischen Geschichte. Sie hat gezeigt, dass das Streben der Menschen nach Freiheit und Einheit stärker ist als Beton und Totalitarismus. Auch heute noch inspiriert sie uns in unserem Kampf für Freiheit, Unabhängigkeit und ein stärkeres, wohlhabenderes Europa.
Wir sind Deutschland dankbar für seine herausragende Führungsrolle bei der Unterstützung der Ukraine. Die deutsche Hilfe hat bereits Tausenden von Ukrainerinnen und Ukrainern das Leben gerettet. Diese Unterstützung trägt auch dazu bei, Europa sicherer zu machen und den Frieden langfristig für alle Europäerinnen und Europäer zu sichern.
Wir alle wünschen uns, dass es in Europa nie wieder geteilte Nationen oder Mauern gibt, die Menschen und Familien auseinanderreißen. Gemeinsam werden wir sicherstellen, dass Europa geeint und inspiriert bleibt.