DennisB

The air pressure is just one part of the of this, the other part is the oxygen concentration. Humans are made for living at 1 bar pressure and 21% oxygen concentration, this gives a partial pressure of oxygen of 0,21 bar, and this is, what really counts. Humans can survive up to an altitude of 5500-6000m for a limited time (don't count extreme hikers), where the air pressure is a little over 0,5bar. This means in theory, if there aren't any other limiting factors, it could be possible to take off the helmet at an air pressure of 0,11bar, if the air is of pure oxygen. The other interesting aspect is the boiling point of water, which is around 45 °C at 0,1 bar, so a lower pressure would be lethal for this reason too (this happened to Joseph Kittinger's hand at his space jump, as his glove depressurized).

The badges are normally just for completing a challenge, and the ranking is in the opening post of the challenge thread.

Congratulation to the successful mission. I have some questions to it, just out of curiosity. Can you explain that maneuver of the impactor at Vall in detail, and what happened with Felipe? And why did you have to go back to Laythe at the end? Couldn't you do that stuff at the beginning? The same at Jool?

There are so many challenges on the forum, I'm sure, you can find the right one for you. I suggest something, where the mission itself is short, so you don't get bored, but hard to complete, so it's challenging.

I've finished the construction and preparation for my next mission. This is the result Ready for the launch. But not today.

Let's see, what number comes out at the end. Sometimes I wish, I had try to collect landed science at the water biomes, but than I know, it had made my design process much longer, because I almost finished the construction, as I had the idea. I still haven't tried that, but if it works.... who knows.... maybe I will try to get the record back again. But not in the near future for sure. Now my focus is elsewhere.

Yes I know, I made some people curious, but at the moment I want only tell you this. The spacecraft has a similar style and complexity, like my previous ones. The mission itself is more simply than my previous ones, but it is something, what nobody did before (at least I know only less ambitious missions of that kind).

I've reached the final part of my spacecraft construction. It would be so cool to launch it horizontally from the runway, but after I spent so many hours with construction and testing, I gave it up, because I crashed every time at takeoff. Now I have to take off vertically, which doubles the launch mass, but that's it. I have enough of the experiments, and want to start the mission. But I still need more boosters.

I think, you ran out of electricity. You can rotate your vessel with the engine, and if it has an alternator, you can generate electricity at the same time, or at the next time, put on some batteries, or turn off SAS always, when not needed..

If you know, where the Sun was at launch and by which angle your solar panels were off from the ideal position, when reaching equatorial orbit, you can calculate how many hours earlier or later in the day you have to launch to get into the right position. The Earth rotates with 15 degrees per hour. Launching into a polar orbit would be fine too, if you launch at sunrise or sunset.

The same here. The workaround works. But for new visitors it's a problem, because they see the unformatted page, which is useless. I could only find the solution, because I knew, that this thread exists, and if there is a solution, it will stay here, and I found a way to navigate to here.

If you have no control over your satellite, the only solution is to adjust the launch time to have a good orientation, when reaching orbit.

This sounds almost like myself 2 years ago.

Looking at your orbital parameters, it should be Satellite 4, because it has the longest orbital period compared to the other ones, which are more similar to each other.

What is the difference between the two?