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------------------ Material constants ------------------ -------- Hydrogen -------- Temp.[K] Press.abs.[bar] Density(liq)[kg/l] Density(gas)[kg/m^3] Evaporation enthalpy[kJ/kg] 13.95 0.072 0.0770235 0.1254 449.1 14 0.074...

Leakage-Losses --------------- Leakage comes through the MassFlowOut[kg/s] inport (we can discuss that), and is therefore calculated externally. It consists of diffusion, or leakage through small gaps. It is the long time losses. Very important for long voyages. So it happens even it the tank...

Cryo tanks --------------- --------------- Cryo tanks and how to model them should be addressed here. I would like to show some helpful information here, esp. some interesting numbers for nice substances. But first a few thoughts about how we could model all this. I link two pictures of the...

Appendix Heat transfer coefficient vs. thermal conductivity *Caution*: do not mix up heat transfer coefficient (alpha) with thermal conductivity (lambda) ! Conductivity is the ability of a material to transport heat inside ("Fouriers law" : Q_dot [W] = lambda[W/K/m] * Delta_T [K] *...

Discussion A few words of how to model this kind of stuff: So this is for us real time, quasi stationary, junkies. This professional thing with finite elements, CAD-calculation, local heat flow with conductivity and so on... we do not need this, and, we don't want this ! We do not want to...

Heat Transfer and -Capacity Heat transfer and heat capacity modeling should be addressed here. I would like to show some helpful information here, esp. some interesting numbers for nice materials, like the best and the worst heat transfering materials, typical airospace materials, and so on...

Black body radiation for cooling in space Since we all know, not just as Big E. told us, that in space we need no water to cool our systems. Additionally, we do not have lots of it there. Normally. So we have to get some nice formula to calculate how fast our space ship can cool down when...

I'm very happy to help! I know from my work that it's always helpful to have a nice, reasonably useful overview for comparison purposes.

--------------------- Real FuelCells in KSA --------------------- There is a lot writing about FC (Fuel Cells) in the internet, but often it is not quite clear what the electric power output is in dependence of mass flow rates. Often there is volume flow used, and this is not unique since it...

Apparently, AMD graphics cards are not yet properly supported, so we'll just have to be patient...

Yes, AMD graphics cards are currently not supported (at least for me, since waiting 5-10 minutes for KSA to start up every time is not an option for me).

o.k. thank you, I will give it a try again :)

Wunderbar ! Beautiful ! ¡Precioso! Magnifique ! Mirabile! Pulchrum! Splendidum!

https://explore-mars.esri.com/

That looks quite good. However, the integral under the curve should be normalized so that the total research funding does not become infinite. Usually, a half-life approach is used to solve such problems: y = y0 * exp(-t/tau) where y is the current science output [Science/s] , y0 is the initial...

What I meant was: Fiddling around in the registry doesn't feel like a solid and sustainable solution to me. Surely someone must have come up with a solid patch or hotfix or something that fixes this stupid Vulkan problem...

It starts like this: PS C:\WINDOWS\system32> vulkaninfo WARNING: [Loader Message] Code 0 : windows_read_data_files_in_registry: Registry lookup failed to get layer manifest files. WARNING: [Loader Message] Code 0 : vkGetPhysicalDeviceSurfaceCapabilities2KHR: Emulation found unrecognized...

I don't understand why this should solve the problem that only occurs with KSA, and above all, why. KSA still won't start with my AMD Radeon RX 6950 XT. Sometimes I even have to shut down my computer hard because everything freezes and crashes. With all due respect, but that's no good.

Me too

Merry christmas and a happy new year. Frohe Weihnachten und ein gutes, neues Jahr !