Under Pressure!

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Offline Kedamono

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Under Pressure!
« on: August 06, 2018, 10:16:05 PM »
So, looking at the various worlds for the different alien species, some come from worlds with higher gravity and others from lower gravity. What does that mean for atmospheric pressure?

Let's look the extreme of Oxy-breathers: The Bor'Cha. Their homeworld has a gravity of 2.35g, which translates to about 2.1 atmospheres. (Based on my research materials, that's about average.) Humans going to their world won't have any problems breathing there, and won't need to decompress for very long. About 5-10 minutes. Oxygen levels aren't high enough to cause any problems.

Going the other way, Bor'Chas going to 1 atmosphere would be at the equivalent of 6,096 meters (20,000 ft.) so not too much of a problem, though some might experience a mild form of altitude sickness. Easily taken care of with supplemental oxygen. Yes, you'll see Bor'Cha walking around with nasal tubes when on Earth or Alvarez Station, at least newcomers. Those that live there for a while will adapt, and not need the O2 tubes and accumulators. Bor'Cha born on Earth will be weaker, because they grow up under their equivalent of 0.43g. Something not covered in the current rules.

And let's not forget the various colonies. Frenner II has a gravity of 1.1g, and that can translate to an atmospheric pressure of 1.05 or 1.1 atmospheres. Nothing to worry about, but Frenner ships routinely run at "Frenner Normal" so they have a slightly higher pressure and acceleration.

Note: Bor'Cha tool around at Faxn'Chur Normal, 2.35g. For an Earth ship, to go from Earth to Mars at closest approach, 75,000,000km, it takes 2 days at 1g. For the Bor'Cha, it takes 1d 7h 42m.

Right now, I don't have the time to work out what the atmospheric pressure is for all the sophonts in the game, but it's going to be all over the place...

« Last Edit: August 06, 2018, 10:46:08 PM by Kedamono »