Green Baron

This question actually made me download and install KSP again, since a long time :-) First: the craft wouldn't load in a Linux stock 1.6.1. sandbox game due to missing parts. If you are suffering crashes it is in principle a good idea to look at all the available logs, from KSP and the OS. Start the program from a terminal, even it is only for a lapidary "Segmentation fault" message in the end. Look at the KSP log, see OS's logs in /var/log. Without further info it is impossible to corner the error, if one exists. You can put the question in the support section of the Making History expansion (which i do not own). Sorry ...

This is cool, @SpaceCarmelo. I am doing a naive renderer myself, maybe one day i'll ask you for sources and help on where to find everything i need about audio in an own program :-) Until then: safe landings !

Oldest rock from Earth may have been found by Apollo 14 on the Moon, as a Zirkon enclosed in Lunar breccia. The Zirkon may have formed under conditions that do not exist on the moon, but could have existed on earth. Solidification of Lunar surface is dated to 4.533Gy, oldest rock on Earth up to now to 4.404Gy. So this may be the oldest rock from Earth ... found outside of the front door. https://www.sciencedirect.com/science/article/pii/S0012821X19300202

2711

The cat snores ...

I see, yeah, thanks. Fortunately the transitions on both sides are from from 2% slope, so that will probably not be a problem with the flexible rails. Minimum curve radius is 60cm, i know that is below NEM recommendation but reality demands so. I think i can get away with 4% on the downward side and slightly less uphill when i separate the tracks and make box bridges from 3mm plywood for the overpass. That spares 9mm plywood and cork. This will be in an underground area. I will glue a sign at the tunnel entrance: !? Pantographs retracted ?! and build a wire fender thing to avoid ripping them off ...

Hi @Shpaget. Question to the professional model railroader. Underground, where optics don't count, what is the maximum slope one can safely use ? What is the max you have on your layout ? I made a planning mistake and now must bend it a bit for a crossing with enough headroom (>=6cm), for that i'd ave to go above 4% or change the design. Cheers gb

Do your Schnitzels wear armour ? :-)

2687

Most certainly not. That is in the range of a slow flying arrow to stay with the late medieval connotation. The "Streithammer" is a late medieval/early modern weapon that was meant to deform the armor (helmets had to fit closely and were lined with leather or they would dangle around the head) or to use the pointed side to poke through the soft parts at the joints in close combat or use as a lever. It is not the sole weapon, it would be useless against a long pointed sword ("Panzerbrecher", "Sempachschwert") because of slow speed (swing against thrust) or a halberd (lack of range). All of these weapons would be pretty useless in modern times, except for sports or reenactment. Today people kill each other with drones, rockets, bombs, bullets, radioactivity, etc. pp.

Welcome ! I recall my first Jool 5 Mission and the landing photos of the proud Kerbals :-)

2671

Just for completion, a NASA text on rover heat control: https://marsmobile.jpl.nasa.gov/mer/mission/rover/temperature/

Yeah, that was about the course of things ... until last time. But that can all be read up on NASA's mission pages or even Wikipedia.

From what i know consumer grade panel's degradation rates are between 0.5% and 0.8% per year. I can imagine that what nasa uses is better than that (though probably not by a factor) and by no means a limiting element for the rover. Btw.: If i read it right, the rover's panels are assumed to have been cleared from dust by wind shortly after the storm. The rover died of old age.

It is not more sensitive to failure, probably less, than other tech. It was just old. The last sandstorm may just have given the aging hardware the last punch. Efficiency is the measurement of achieving a goal with the least effort. The rover has lasted 55 times as long as planned and successfully weathered through several sandstorms before. I call that, and its achievements during its lifetime, extremely effective and efficient :-)

Greetings, @RockKrawler & @RubyPetersen. I just went through the door with a piece of plywood in hand ... and almost ran after it because of a gusty wind. Though it is 18°C and sunshine, i am again sitting here.

Don't troll me. A mobile device like a rover may be better off with the one or the other, depending on the use case, circumstances, degree of mobility, power requirement. It can be a combination of solar or nuclear, or solely the one or the other. We have been through pros and cons and all that. This solar driven rover has lasted 14 years and weathered out several dust storms before.

This has all been discussed in length, width & height. tl,dr: they are extremely effective.

Track ? Ay ! 2647 How they all look towards the camera. Even the doggy .... :-)

"Your request could not be processed. Please rephrase request." :-) Nope. Dust storms on Mars are supraregional events, may even grow planet wide. The are the result of different ground heating, and thus atmospheric temperature and so pressure differences, not caused by atmospheric blasts from impacts. Concrete simple example, by no means complete or accurate, just to show the principle: let's assume a relatively dark coloured, deep lying basin and the sun shining directly on it (90°).It will heat up faster and more than more lighter areas surrounding it, where the sun hits at an angle. That will cause the overlying air in the basin to heat, start to rise, and then rotate due to coriolis. A deep pressure area L is born. Somewhere in the surrounding, the air will sink to equalize pressure difference, and rotate in the opposite direction. A high pressure area H is born. In between them air will flow rectangular to the centers of L and H, the wind strength will be corresponding to the density of the isobars (pressure difference/distance). At ground, where the airflow is slowed by topography, pressure difference will slowly equalize and at some time wind will go down until a stable state is reached again. The other day, things may start again. But i must admit, i do know little about the exact conditions on Mars.

2621 *scratchhead* Are they meant to be for humans ? My toes hurt just from looking at these ...

Sunshine :-) A dust storm develops when winds are strong enough to vibrate dust particles out of the ground and keep them in suspension. Winds develop through pressure differences over large areas. Pressure differences are the result of temperature differences, which are the result of different heating of the ground by the sun. Type of ground, reflectivity, heat buffering, topography, etc. play a role. Coriolis force and pressure difference determine how strong the winds will be, depending on height, topography, .... That's in in short. For a given case of a planet wide dust storm on Mars i am not sure if the exact chain of actions, like what must heat up how much and how high must pressure differences be in order to generate which levels of winds and suspend which particle sizes, are known in detail.

Welcome to the forum ! And ... nope on first sight 2615 is divisable by 5 (and maybe others). Want to try again ?

Train pic: 2609