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Sturgeon's House

Xlucine

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Everything posted by Xlucine

  1. In theory yes, although the effect is probably quite small - the forces to break that seal ought to be pretty minor in comparison. Might be interesting to see if someone could actually try it and see if there's an MV increase
  2. Richard Anderson is the hero tanknet deserves. Also, he wrote a very good book. Buy it if you want to know just about everything possible about d-day
  3. We need to attract him to the wehraboo hunting cause on the WoT forum
  4. Thinking about the effect of a heavier boolit on the combustion, it reminded me of what my thermo lecturer was talking about with the idealised otto cyle and diesel cycle - modelling the combustion as simple heat addition, a heavier boolit will get more PdV work. So, the otto cycle is more efficient than a diesel cycle ceteris paribus - this is because the ignition of the fuel is so quick it's kinda like isochoric heat addition (i.e. constant volume), whereas diesels are limited by the time it takes to inject the fuel* so are better approximated by isobaric heat addition (constant pressure, so with volume increasing). Since some travel is taking place in the diesel cycle before all the heat is added, there's less area under the P-V diagram so less work is done. *according to my lecturer, non-direct injection diesels are not halal Something similar will happen with a heavier boolit - it will have moved less before all the propellant is combusted, so it's closer to the ideal of holding the bullet in place until all the propellant has combusted to maximise PdV work*. A light boolit, OTOH, will have moved down the tube more when the pressure in the chamber was low, so doesn't get as much work done on it. The rate of combustion is probably proportional to pressure and temp as well, giving an even more pronounced effect. All this is happening completely separate to the not-quasi-equilibrium thingy with the ratio of propellant gas speeds and boolit speed - that reduces efficiency towards the end of the barrel, whereas this reduces efficiency near the chamber where velocities are much lower *maximum pressure limits are for wusses
  5. Notice the much smaller gap between the return rollers and road wheels when it's on the truck compared to when it's on the desert. Seems to have some kind of controllable suspension
  6. WD-40 is yankee garbage, ZX-54 is the one true lubricant! A liberal dousing of that stuff would be a very good thing for that tank. I don't know much about that vehicle - AFAIK it's sat in that spot for the past few decades, and now it's been moved out of the way of the creepy looking horse replicas the museum can keep on ignoring it.
  7. If the apaches did have longbows, how much would they have genocided the other tribes?
  8. Hopefully we don't have to start basing a useful number of typhoons down there permanently, that'd drain money away from useful things like new tanks. Also Lol daily express
  9. A round that is unstable when subsonic must hold great appeal to the designer of military ranges (after all, the cone-stabilised training rounds for tank guns have a similar property), but I cannot see it having as much appeal to those who must use it - especially with all the "individual weapons must be capable of delivering 5 million joules of energy at all visible ranges" rhetoric from the gerpercer crowd. Squinting at the rims in that photo, it doesn't look like it'll be a straight barrel swap
  10. Even if the AL requires the loaders to move the ready rack conveyor then it's still just like the AL on AMX-13 AIUI. Why the hell didn't it have more ammo? 2.5k is abysmal, chieftain and M60 have twice that (or thereabouts) in the ready boxes for their coaxes. The boolit stool for the gunner was neat, but it sorely needs more MG ammo
  11. So, now we've established dinosaurs had feathers, how about thermoregulation? *ducks for cover*
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