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DDE

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Everything posted by DDE

  1. DDE
    Correction: MS-21 is undocked, but the deorbit burn has been aborted. Mainly because they haven't been able to find any visual evidence of damage.
  2. DDE
    Progress M21 to undock tomorrow 05:26 MSK. Instead of trying to bend the Canadarm to photo it, they're going to photo it once undocked. https://t.me/roscosmos_gk/8477
  3. DDE
    US and China: "Is it aliens?" "We can neither confirm nor deny" Russia and Ukraine: "So this UFO in my backyard has a Romanian cola bottle as ballast, go figure"
  4. DDE
    Phosgene over Ohio. Who woulda thunk... Damn, this is shaping out to be a nasty week for the US, isn't it?
  5. DDE
    Intergenerational inheritance of DNA methylation, which is a vehicle for epigenetic mutation, in mice; includes at least one case of the artificially induced methylation resurfacing in grand-children https://www.cell.com/cell/fulltext/S0092-8674(22)01630-0?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0092867422016300%3Fshowall%3Dtrue Mechanism and implications uncertain, given how the methylation was induced by gene-solicing and unsplicing, but they've been able to make all offspring overweight without a detectable permanent alterations to the genes themselves.
  6. DDE
    California, school busses. The remarks of a certain American politician have reached the Russian segment of the net, and they're causing guffaws, albeit not for the reason they were originally spread far and wide. Given that Wi-fi and USB charge ports have been the norm for Moscow's busses since the late 2010s, including both apparent upgrade kits for regular diesels, and a growing fleet of EVs, trying to use these as a selling point invites scorn towards California's school bus system. I decided to see if there's anything more to this story, and took a glance at the US EVs that get lambasted in related coverage for low reliability in scorching heat. And their specs invite the actual questions. Moscow's electrobus fleet are KamAZ-6282 (range: 70 km) and LiAZ-6274 (range: 80 km). The latter at some point in development had to trade a 200 km-capable Li-ion battery pack for a Li-titanite pack similar to the former. And galcing over the driver's shoulder, you really can see the charge bar drop in real time. Meanwhile, ProTerra aim for a whopping 250-300+ miles. The questions boil down to necessity - are US school district and public transport routes really this long? I'm also wondering if, for some reason, charging between every circuit/two circuits was for some reason considered unacceptable. At this point, it feels like the endurance of the driver and oassengers would be the limiting factor in operation. Curious to hear any comments and opinions.
  7. DDE
    Got tone?
  8. DDE
    The first balloon was shot down by an AIM-9X. Missile selection clearly wasn't the problem. Also, if we're back to balloons, guess who else joins the contest! https://www.pravda.com.ua/eng/news/2023/02/14/7389304/index.amp The launch appears to have successfully simulated a Shahed/Geranium raid, jusdging by the alert that went out that night.
  9. DDE
    I think https://www.whatsthatbug.com/ charged extra for hazard pay in identifying that one...
  10. DDE
    Rogozin's №1 fan chips in Mikhail Kotov has succinctly summarized that, whatever has actually hapenned, any version involves Dyatlov Pass levels of mystery. Even if both cases are an endogenic technical issue, it has replicated itself with absolutely astonishing reliability. https://t.me/space78125/1565
  11. DDE
    The nuclear-powered submarine tanker from Malakhit strikes again (this time not as a Typhoon derivative) Recently getting rehyped again as a blockade runner, but the project is back from 2019. https://sudostroenie.info/novosti/28091.html As pointed out in rather unprintable language by Dmitry Kononykhin, who claims to have participated in the original 1994-'95 studies, underwater transportation of a bulk cargo that is 2.5 times less dense than water is a remarkably impractical idea in principle.
  12. DDE
    You'd have to somehow explain a ring of dark ejecta or pyrobolt explosive residue. Doesn't look like mechanical markings.
  13. DDE
  14. DDE
    No, it wouldn't. For what it's worth, this does look a fair bit like a hypervelocity impact. Anyway, Ilya Ovchinnikov posits that this is quite close to where the solar panel hold-down bolts are. https://t.me/space78125/1558
  15. DDE
    The problem is that the original statement was "a depressurization has occurred", full stop. That would cover either scenario. As you can see a page back, I too hadn't immediately jumped to blame the cooling loop.
  16. DDE
    Hey, if they did, at least everyone was in the same boat. NASA had officially dismissed the Geminids as the culprits. That's about it. Another option someone bounced around on NASASpaceflight is damage from fairing separation. This too would be fairly replicable, although doesn't quite match the visual description provided by NASA.
  17. DDE
    Also, I decided to look if NASA has publicly concurred with the Roscosmos party line. It doesn't seem that they have. This is presently what amounts to their final word:
  18. DDE
    I'd also like to highlight how, much like the MS-9 air leak, this issue had a curious way of manifesting with a very significant delay. That's an ill-advised approach to sabotage due to its unpredictability - any half-***ed seal you apply might actually last for the whole flight. Doesn't mitigate the risk of the culprit being identified (after the Yaskin fiasko, I imagine no-one who's ever been near a Soyuz is allowed to ever cross the border), but does increase the chance the sabotage efforts don't pan out.
  19. DDE
    We have to entertain another, very familiar possibility. *beat* The ULA Sniper. Anyway... https://blogs.nasa.gov/spacestation/2023/02/11/international-space-station-operations-update-crew-continues-normal-activities/ As per NASA, the internal hatch is open. This indicates it is an external leak. It is also easily reconciled with Roscosmos statement: you'd want to open the hatch if the leak isn't internal.
  20. DDE
    Citation needed. The description matches a drilling incident as well.
  21. DDE
    Pressure loss in Progress MS-21 (the previous one). Ship's already sealed off; no further work was planned. https://t.me/roscosmos_gk/8419
  22. DDE
    I must ask, though... why the SLS in the illustration of a site in Alaska? And yet Bill Gates's project couldn't? Doesn't fit...
  23. DDE
    Good fences make good neighbors. Czechia.
  24. DDE
    Nuclear fuel channels in a VVER look... like something you wouldn't expect. https://t.me/syndromA3/1583
  25. DDE
    Photos: https://t.me/space78125/1544
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