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Sturgeon's House


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Everything posted by Xoon

  1. So, this rendering is practically useless to get any information on the new AFV? Does not look like the 3D artist knew anything about AFVs. Did he place the turret above the engine? Where are the exhausts? Is the tank cramped, or is the angle just weird on that soldier? Is the tank small with tiny tracks, or huge with normal size tracks? Where are the hatches? Not really sure what the point of this 3D model is.
  2. Any information on why they are armoring their tanks like this? Does it improve KE protection?
  3. The US is planning on standardizing their fleet on a modular opposed piston design, a little interesting: http://www.calstart.org/Libraries/HTUF_2016/6_-_Major_-_Achates.sflb.ashx And some info: http://www.dtic.mil/dtic/tr/fulltext/u2/a566997.pdf http://www.dtic.mil/dtic/tr/fulltext/u2/a626738.pdf
  4. Image made by me. ICE: Internal combustion engine. EL-M: Electric motor which works as a starter, generator, alternator, regenerative break and power adder. Hydro-C: Hydraulic coupling which works has a torque converter M: Electric motor and regenerative breaks. FD: Final drive. Very interesting, they took a parallel hybrid system, replaced the gearbox with a torque converter, ran a clutch through it so they could lock it up when it was not needed for more efficiency, and replaced the starter motor and alternator with a single electric motor. If it is r
  5. What is this? The image description says Leopard 2 VT2000, any information on it?
  6. Is it possible it is just spaced armor? And, isn't it named Type 87?
  7. Yes, quite old news actually. Some guy at the WT forums found out about it, and now everyone there are losing their shit about the composite armor on it. Though, quite confusing to use NERA for small arms protection.
  8. The propaganda video uses quite old footage, including the one of the T-90 that caught fire (the remote MG's ammunition caught fire). Here is the video for those that are curious (The Leopard is seens at 08:20) (WARING, GRAPHIC): http://videos.videopress.com/wutY8cZC/the-islamic-state-22stay-for-the-end-times-wilacc84yat-hcca3alab22_hd.mp4
  9. Probably not the same tank when I think about it, might be another picture I was talking about. Anyways, another disabled Leopard 2?
  10. Just a two pictures I found interesting from a drone in a ISIS propaganda video: A little closer: Same tank?
  11. But does this mean that after a week, all the pressure would be gone? You should be careful when comparing bulldozers and bobcats to tanks. First of all, those vehicles use actuators. Since hydraulic actuators are much cheaper than electric actuators, also electric actuators require cooling in some cases, the hydraulic actuator reigns supreme. Now, this means you need a pump to power the hydraulic circuit, so why not make the motors hydraulic too? This saves complexity, time and money. Now, in modern tanks we do have some hydraulic systems like the turret traverse and elev
  12. Yeah, I am a to-be-tradesman, not a engineer, at least yet. So this is more advanced than we are taught. We work generally with PSUs (24V, 2.5A) and your typical out-of-the-socket voltage types (230V, 380V, 400V, 440V and 690V). Here the current is constant, and will fill out the path of least resistance. Burning out anything not strong enough to handle it. We can manually adjust the PSUs, but we usually just keep them at max. And we are thought to never mix voltages, usually to avoid fusing switches and melting coils. I have touched on some more dynamic formulas, but n
  13. Well, a small leak would still probably rupture the hose and spew hydraulic liquids everywhere. In a component it would not be a issue, well other than having to constantly refill the reservoir. Normally, you would have two circuits per sprocket, meaning that if one circuit fails, you can still limp back to base with the other. But of course this comes with the issue of needing two reservoirs, two pumps and two of any control valves per sprocket. Which could get complex. Without a duplicated circuit, the system would be just as vulnerable, if not more vulnerable. Ok, so I just
  14. Well of course, the motors won't last forever. And yes, rewinding electric motors is becoming rarer and rarer, but you can still do it if needed. But most of the time you just replace the entire thing. When it comes to hydraulic transmissions, I can't say for sure. I am used to pneumatic systems, which are very similar. My problem with hydraulics is the chance of leakage, any leakage would cause the entire system to fail, if the pump failed, the system fails. And in practice, you would use the same control systems for the hydraulics, magnet valves and such. Here the sealing could ruptur
  15. Yes, efficiency of electric motors have dramatically increased. Probably the main reason the motors were so heavy is because the cast iron frame. Nowadays we can use aluminum and titanium. Though, a hybrid electric drivetrain would probably be a bit bigger than a conventional transmission. If money was not a issue, we could wind the motors with silver, and make casings out of ceramics or some high strength alloy and the transmission would probably be around 40% more efficient and twice as light. Though the price would be around 20 times as high. Electric motors in general don't
  16. Thanks Coll, just what I needed. So if you don't mind I have a few questions on some points: The ideal tank steering mechanism is as simple as possible; or else the tank will be hard to maintain in the field. A tank that's stuck in the repair shop most of the time is no good for fighting. From my point of view at least, a electric transmission would be the most simple of them all, a little ironic considering that the dual drive system is one of the most complex ones. Why? Because the system can be broken into a few parts: 2 electric motors 2 VSDs 1 generator 1 engine Wire
  17. I've been thinking about projecting a electric transmission just for fun, so I was wondering if you guys could tell me about the different steering systems in tanks. A short explanation of the concept would be enough, though you could link me to a article or post if you got one.
  18. What about a two stage swingfire-like top attack missile? Launch the missile upwards around 45-70 degrees with the first booster, then ignite the second soild-fuel rocket to accelerate it towards the target. If the arch is high enough, then it should simply need to be pointed towards the target and it would hit it at 30 degrees, from horizontal. But all things considered, wouldn't KEP missiles be quite bulky? Thereby limiting them to long range AT role, most likely vehicle mounted. But I have to say, 3 meter long missile sounds like a pain in the ass to work with for a AFV des
  19. In case of the 9V battery it probably was shorted when it touched the metal casing, which rapidly heats up the battery and part of the casing it touches. This could probably ignited the propellant if it is sensitive enough. When it comes to static electricity, instead of a constant supply heating up the metal, you would instead have a arc which heats up the surrounding air/gas and ignites it. A human does defiantly have the potential to ignite the propellant, but it seems highly unlikely with a casing, since the casing would discharge you, instead of sending the arc through the propellan
  20. Israel has a far better developed defense industry, so it is a bad comparison. But I do see your point.
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