Posted by: Another
« on: March 15, 2010, 08:36:02 AM »1. Methane or Hydrogen + Oxygen atmospheres with at least 10% of both oxidizer and oxidizable always seem to me being a giant bomb waiting for a tiny spark . Same to a lesser extent for other combinations of fuel and aggressive oxidizing gases (F, Cl, ...).
2. Astronauts breath mostly pure oxygen for economic reasons and deep divers sometimes breath O2-He mixture with O2 concentrations at about 5% (that would be 1 atmosphere of O2 partial pressure at 200m underwater).
3. CO2 levels above 2% at atmospheric pressure are toxic for prolonged exposure. Since the effects are associated with CO2 concentrations in blood it should also be dependent on CO2 partial pressure and not on relative concentration.
4. If you want to be able to drive a combustion based car on your planet or not have your aluminium and even iron catch fire you will probably need some neutral gases (N2) in 70-90% concentration range. Fire hazard IS a concern for modern space stations.
What of these currently applies to Aurora and what should apply is probably material for the Suggestions thread.
2. Astronauts breath mostly pure oxygen for economic reasons and deep divers sometimes breath O2-He mixture with O2 concentrations at about 5% (that would be 1 atmosphere of O2 partial pressure at 200m underwater).
3. CO2 levels above 2% at atmospheric pressure are toxic for prolonged exposure. Since the effects are associated with CO2 concentrations in blood it should also be dependent on CO2 partial pressure and not on relative concentration.
4. If you want to be able to drive a combustion based car on your planet or not have your aluminium and even iron catch fire you will probably need some neutral gases (N2) in 70-90% concentration range. Fire hazard IS a concern for modern space stations.
What of these currently applies to Aurora and what should apply is probably material for the Suggestions thread.