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DDE

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Everything posted by DDE

  1. DDE
    1st Company on trench-digging duty. 2nd Company observes. 3rd Company on trench-filling duty!
  2. DDE
    Yeeeeah, because all private companies always deliver on time
  3. DDE
    Nah, they’d be good corporate citizens and shoot themselves in the foot - otherwise there’s no tellling what irregularities Rosaviatsiya would uncover. Right now they’re pretending the Zenit assembly line in former Dnepropetrovsk has retained full functionality.
  4. DDE
    @ARS Whoa, whoa, whoa. A Kosmos spacecraft at Mars? Somebody flunked their research quite badly. ...Or it’s a very valid reason to bring a battle rover to the Red-owned planet.
  5. DDE
    Edit: a somewhat older English article with choice quotes - https://www.reuters.com/article/us-oneweb-russia-security-exclusive/exclusive-russia-opposes-u-s-oneweb-satellite-service-cites-security-concerns-idUSKCN1MY1P8
  6. DDE
    Never was much of a priority. Plus, it would be the pad for the superheavy, not the Soyuz-5. Basic land survey for that pad began about a week ago. On an unrelated note, Roscosmos is in serious trouble. Its name is OneWeb. There’s a contract for 21 Soyuz, a possible contract for 5 Protons, and an option for further 8. But then the FSB declares OneWeb a national security threat, since it ‘cannot exclude reconnaissance capability’. https://www.kommersant.ru/doc/3798322 The truth is much simpler: OneWeb isn’t going to integrate the SORM traffic snoopers (likely to be supplemented with DPI in the nearest future), thus putting the traffic out of reach of Russia’s ‘Internet sovereignty’ measures. The frequency allocation authority is similarily dragging is heels. Problem is, this obstruction is utterly inconsequential to OneWeb. My own anonymous sauces say the FSB has already considered blanket-jamming all OneWeb signals in Russian territory, but the pricetag does not look good.
  7. DDE
    Heavy ECM, counter-projectile point defence, and even longer-ranged defences to push standoff range further. Eventually the useful payload shrinks and shrinks. And here I thought this thread was about THIS fat man:
  8. DDE
    They did that to MS-9, too. Didn’t help much.
  9. DDE
    Plugging the cooling for a 1000 K-something system into the same loop as your 293 K habitat is highly unwise.
  10. DDE
    A fair point. Problem is, Sutton never really distinguishes the name of the missile from the name of the main engine. Indeed, IIRC he calls it standard Rocketdyne practice at some point. Down to the Atlas report, then. As an aside, I don't understand what DoD is trying to accomplish by blocking all queries to .mil addresses from Russia. It's not like VPNs and botnets-for-hire in other countries are a thing, right? All in all, I think OP's looking for Figure 6.1-6. They didn't give the Sustainer any other designation. The numbering of the booster (B) and Vernier (V) engines is clockwise, while the direction of flight changes by 90 degrees between two autopilot models (D-RIG and D-AIG), adding 5 sec to the roll program duration.
  11. DDE
    OP, your assumption appears erroneous. There's no B-3, Sutton - who built the damn things - identifies the sustainer engines as MA-1 through MA-5A while the boosters are B-1 through B-2C. I'll haphazardly copy-paste the chunk of the book for your perusal. Rocket coordinate systems are always more or less arbitrary - and often so hard to determine the manuals dedicated a whole figure to them.
  12. DDE
    Sure, but at that point system complexity and dead weight start to go out of control. A few minor additions and you can break out the nuclear-electric drive, with, what, 15 times the Isp?
  13. DDE
    Footage from the Glonass launch.
  14. DDE
    Throw in a Nerva for decent combat acceleration, and they’ll be in. There is no need for the Space Force to leech off of NASA. Not to mention, if Mattis is to be believed, its ambitions will quickly eclipse NASA’s entire budgetary capabilities. What’s with the necessity for offensive space capability. *coughs in Russian* https://forum.nasaspaceflight.com/index.php?topic=45734.0
  15. DDE
    “To ISS” is far more than that. And that’s on the equivalent of the Progress. https://arstechnica.com/science/2018/04/nasa-to-pay-more-for-less-cargo-delivery-to-the-space-station/ Also note that SpaceX advertised per-launch costs are for reuse whereas payload values are for expendable flights. “Hold my latte!” It’s the same people, after all.
  16. DDE
    Apparently, man-rating those things would have been even more expensive. The question obviously came up when Orion flew on a Delta IV.
  17. DDE
    Wait, does this count?
  18. DDE
    Also, while we're on the topic, have a glance at this: https://securelist.com/satellite-turla-apt-command-and-control-in-the-sky/72081/ Russian-speaking, check, cyberintelligence op, check, squats in Congolese satellite internet comms, check. Article by Russian hacker... experts? Check.
  19. DDE
    Look, Rogozin even mentioned the elephant in the room (more expensive than Apollo)! Anyway, I'm locked out of Reddit (sounds way too coincidental, I guess the Kremlin owes me a lot for tactical excrementsposting), so you'll have to substitute for r/space. https://www.interfax.ru/world/636643 One of Zvezda's three main computers has crashed, still down as of three hours ago. https://ria.ru/science/20181106/1532172710.html Roscosmos may install CCTV on the Russian segment to track the movements of cosmonauts and astronauts. https://ria.ru/space/20181104/1532121604.html Progress MS-10's booster is to have the sensor pins replaced entirely, despite being cleared for flight.
  20. DDE
    Somebody didn't fetch a picture. In a way it's a mini-proto-BFR. For bonus points, the payload would be released by the payload bay simply retracting onto the lOx tank. Alright, somebody's getting lazy. No wonder some people get the impression that it's one disaster after the next.
  21. DDE
    Korolev didn't get there. But Glushko did!
  22. DDE
    That's SOP. No reuse, all recycling.
  23. DDE
    And ten times smaller. Colour me shocked.
  24. DDE
    @razark@Ultimate Steve Mir-era Soyuz ships have switched to an ODU architecture: like the Buran, it feeds the RCS and the main thruster(s) from the same tankage of (in Soyuz's case, UDMH-NTO, while Buran used syntin-lOx).This helps remove the need for the elaborate dual-nozzle backup UDMH-NTO engine and replace it with prograde RCS thrusters.
  25. DDE
    Alright, let's start with the basics. Soviets were MechJeb fans, so the only think the crew didi during abort is engage ballistic reentry mode. The two sticks are for orientation and translation RCS thrusters. There is zero visibility ahead - they've only recently added a blister o the orbital module. Therefore, the Soyuz is flown through a periscope displayed on the circular screen. I'd share some clips from Salyut-7, otherwise known as Soyuz-T-13 porn, but it looks like they're only found in the darker corners of the Russian web.
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