monophonic

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  1. monophonic

    For Questions That Don't Merit Their Own Thread

    Decoys are physical things, although they do belong under the broader concept of jamming. What you have been describing is better categorized into deceptive jamming techniques. Have you considered how your technique behaves in non-trivial acoustic environments e.g. surface duct or bottom bounce conditions? And especially when some emitters are in a different region from others? (a quick reference of sound paths for those who want one: http://www.oc.nps.edu/~bird/oc2930/acoustics/summary.html )
  2. Both of these thoughts were confirmed in the article.
  3. monophonic

    SpaceX Discussion Thread

    "The constantly-changing acronym" would fit in the Culture names theme SpaceX has had going with the barges pretty well. I like that! Because when they do... third reich.
  4. monophonic

    Boring company

    These guys might be interested in cheaper bricks. Most 3D printing building systems seem to extrude concrete like materials though.
  5. monophonic

    2mm hole in ISS

    Do we know that that part is bent and not extruded? Also should one want to tap a thread in the hole wouldn't that have to be done after painting? Otherwise paint would clog the thread right?
  6. monophonic

    2mm hole in ISS

    I wouldn't jump quite that far just yet... First, pilot holes are a standard drilling technique. That is, you first drill a smaller (pilot) hole that is easier to get in exactly the right (or wrong as the case may be) spot which then helps keep the bigger drill bit at the right spot. Second, if you start a hole and stop (for example because you realised you are drilling it at a very wrong spot) before the tapered point of the bit is entirely inside the material being drilled you end up with a hole smaller than the bit you had. In thin materials that can even be a nice through hole, albeit one with a tapered edge (like you would want for counter-sinking a screw head). So even though no 2mm holes are needed that does not prove at all that 2mm holes are not drilled in manufacturing. I may just be that any of that size are to be immediately enlarged to a required size. Or it happened as a consequence of abortive misplaced drilling attempt. Also who would benefit from sabotaging a Soyuz?
  7. monophonic

    Russian Launch and Mission Thread

    Maybe there is a second hole across the room from the now patched one?
  8. monophonic

    For Questions That Don't Merit Their Own Thread

    Add noisiness to that mix and you are getting close. Active noise cancellation and other advances mean flow noise now dominates over machinery noise. Exact priorities over each other depend on the class; a bomber values maximal silence over all others while an attack boat needs to be fast enough to be useful.
  9. monophonic

    SpaceX Discussion Thread

    100 pax is regional airliner size. They are typically boarded and unboarded through a single, narrow one person at a time sized door. This happens in a reasonable time thousands of times every day. That access arm will not be the limiting factor for boarding time regardless of the destination and attire (casual or space suit).
  10. monophonic

    The Astro-Imaging Thread

    From pocket change to small country budgets. Cheap end can be say a smartphone on an ocular holder and a small scope on a motorized mount. Fancy coordinate seeking scope mounts, specialized cameras and powerful computers for processing can be as expensive as you can imagine and more. This is doable at every price level.
  11. monophonic

    NASA SLS/Orion/Payloads

    And that, kids, is why you must be very careful with how you use quotation marks.
  12. But was that dV calculated with an atmospheric nozzle? If so would a vacuum nozzle bring enough extra to allow a LOR profile mission? I am intrigued as the idea of using NS as a LEM has occurred to me too.
  13. Paywalled, can we have a 1 sentence summary?
  14. monophonic

    For Questions That Don't Merit Their Own Thread

    "Flying in weird trajectories to burn out excessive fuel" is exactly what GEMS is. You would use a D-5 (or Bulava) on Mars for exactly the same reason you would use a BDM-1 or Armata in place of a bespoke Mars optimized fighting vehicle.
  15. monophonic

    For Questions That Don't Merit Their Own Thread

    Yes, Armata would be a better starting point. You wont even do extra work vacuum proofing the power train, since you have to fix that first anyway. Some newer IFVs feature unmanned turrets too, if you need more space and/or don't need that extreme armor protection or big gun an MBT has. Of course ground drones are a thing and there are armed ones too. So, maybe you can just do away with the meatbags and their cumbersome needs entirely.