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Sturgeon's House


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Everything posted by Xlucine

  1. General Naval Warfare News/Technology thread.

    HMS protector, an icebreaking hydrographic survey vessel, has joined the search: https://www.royalnavy.mod.uk/news-and-latest-activity/news/2017/november/18/171118-protector-joins-submarine-search-2
  2. Those are just normal tigers though?
  3. General Naval Warfare News/Technology thread.

    Still no sign, which is concerning - if it were on the surface it ought to be easier to find. Not being on the surface isn't terrible news, the ocean off the coast of argentina looks to be about 100m deep for quite some distance from the land so it's not impossible that they're sat on the sea floor awaiting rescue
  4. In fairness, adding space battles and some new content while sticking to the same engine is exactly what pandemic did to create the original battlefront 2.
  5. General news thread

    http://www.bbc.co.uk/news/world-africa-41991425 Coup 101: make sure your vehicles work first
  6. https://www.ukshipregister.co.uk/news/uk-ship-register-signs-its-first-unmanned-vessel/
  7. Aerospace and Ordnance discussion/news.

    So that's why the virginia class have enormous VLS tubes!
  8. Aerospace Pictures and Art Thread

    I think there's turboshafts in the pods, with the drive somehow (shaft? electric?) transferred to the central thingy. Assuming the turboshaft engines don't grenade first, which is a real possibility with that inlet ETA: I'm assuming the third image is the earliest concept, which lead to the first and second images - this means that they must have had a conversation something like this: "you know the pitot inlet? That thing jet engines need to not explode? It looks dumb, lets get rid of it"
  9. Trade-offs in WWII Fighter Design

    Takeoff/landing is harder - the maximum you can pitch up on takeoff is limited by the rear propeller, and the pitch you hold after the flare on landing is also similarly limited. Late war turbocharged double wasps were pushing the same ballpark power as both do335 engines combined, which is a much better idea, and the he119 approach with the later engine would probably achieve a similar result
  10. North Korea's ICBMs and You

  11. General news thread

    Three Canadians charged in naked car crash in Alberta (BBC)
  12. General news thread

    She didn't get away with it, the prime minister ordered her to return from a business trip to africa immediately and 22,000 people laughed at her
  13. Bash the F-35 thred.

    http://www.janes.com/article/75511/germany-declares-preference-for-f-35-to-replace-tornado More chatter about german F-35's. Turns out that if you don't spend money on developing a replacement before an aircraft leaves service, you'll have to buy whatever's on the market at the time!
  14. General news thread

    The UK is currently imploding. The flurry of sexual assault allegations stirred up by the weinstein drama has, unsurprisingly, taken several scalps in the british government. The defence secretary is gone, replaced by the man who was in charge of stopping the defence secretary from making those kind of actions, and one of the accused politicians has taken his own life. This kind of drama would usually guarantee an election, but the party in power is behind in the polls so they'll do anything they can to hold on. This isn't enough excitement, of course, so the press (UK and international) has found another disgruntled financial services employee to dish dirt on tax evasion/dodging by all and sundry. This is extra embarrassing for the UK as a couple of the offshore havens involved are Crown Dependencies, so we're technically responsible for them. Major points so far include Prince Charles owning shares in a company that stood to benefit from his campaigning, The Queen (or her accountants) investing a large-ish sum in an offshore haven, and a major donor to the conservative party (who are in power currently) did everything he could to avoid paying tax while he took up his (bought) role in the House of Lords. Our foreign secretary has managed to get a british-iranian citizen a longer jail sentence in iran, which is the opposite of what he's meant to do. It's pretty clear at this point that he's trying to get fired before he cocks up something really important, and loses any chance of running the conservative party. Finally, a minor minister has been ignoring the rules and talking to politicians in israel without informing her boss or any UK diplomats in the country. Normally this would be a Big Thing, but right now no-one really cares.
  15. Scale Models Megathread

    I made an A-boat Trumpeter 1:350, pre-painted and with stickers as well as decals. I might take the stickers off and paint it properly, eventually, once i figure out exactly what shade matches the flank arrays
  16. Could be cardboard tubes, going by the box in the left of shot that's from a cardboard tube company
  17. The Cartridge Collecting Thread

    In the absence of any surface defects, the transition from laminar to turbulent flow will occur on the outer edge of the boundary layer and propagate inwards to the surface of the aircraft. My fluid lecturer says this occurs at about Re = 5E5, which for an aircraft at 100m/s (~200 knots), and assuming air density of 1.229 kg/m^3 and dynamic viscosity of 1.73E-5, will occur about 7cm in from the leading edge. This is for sea level which is admittedly not representative of most flight, so using the data here this is how the length of the laminar region varies with altitude It gets up to a bit over a foot at high altitude, but is still well below the P-51 chord length (scaling off a 1:76 model I have lying around, ~1.3m at the tip)
  18. The Cartridge Collecting Thread

    They hadn't even figured out how to properly scale wing tunnel data back then (eg, the idea that full scale wings on the P-51 could have laminar flow), so messing up bullet design is understandable (much easier to fit measuring equipment on a plane!)
  19. General Naval Warfare News/Technology thread.

    Huh, that's 11 hours every single day. RN must go hard in specialisation.
  20. Random Space Exploration Dump Thread

    Just in time to say they're on track for a late 2017 launch!
  21. Aerospace Pictures and Art Thread

    Having the pilot sit on the fuel tank, with another fuel tank right in front of him, doesn't seem like a very wise choice. Granted most aircraft of the time were death traps, but putting the tanks in the wings would at least keep the vapours away from the cockpit
  22. North Korea, you so crazy!

    Others disagree. I feel your article is over-egging the potential dangers somewhat - a failure to contain a ~200kt explosion will result in the release of measurable quantities of radionuclides and essentially zero health risk, not contaminate an entire hemisphere. You need a lot more energy than that to even begin to come close to a typical volcanic eruption, for example
  23. The last point is the best. "You know how it's possible to explode a gun by mixing .223 and .300? You should do everything in your power to make that happen."