tag:blogger.com,1999:blog-5515692164785328338.post5535648099176991000..comments2023-06-09T01:00:19.081-07:00Comments on Gravitational Space Balloons: How Many Asteroids Would it take to House all of Humanity?AlanSEhttp://www.blogger.com/profile/08119889774421336682noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-5515692164785328338.post-44069652266453533982013-07-31T20:17:18.657-07:002013-07-31T20:17:18.657-07:00That's my impression of the long term safety l...That's my impression of the long term safety limit also.Loren Pechtelhttps://www.blogger.com/profile/08348494458707790769noreply@blogger.comtag:blogger.com,1999:blog-5515692164785328338.post-37916128580155871942013-07-31T19:56:32.662-07:002013-07-31T19:56:32.662-07:00Yes, compressed air is essentially irrelevant. I ...Yes, compressed air is essentially irrelevant. I mostly found poor analogs from existing human knowledge.<br /><br />Since I wrote this, I read about the Aquarius lab:<br />http://en.wikipedia.org/wiki/Aquarius_%28laboratory%29<br /><br />This underwater lab was designed for long duration stays by divers at high pressure. It was 20 m under the surface, so a total of 3 atmospheres, and people stayed there in roughly 10 day stints. This is an appropriate comparison point because it assumes control of the gas concentrations and attempts long stays.<br /><br />But for inhabiting asteroids, you would only stay at these pressures for a limited period of time anyway. This would essentially be for construction activities while you move rock and produce gas to replace it with. It seems clear that the limit for this is around 3 atm. If any higher, you would have to restrict the area to unmanned operations or develop pressurized quarters.AlanSEhttps://www.blogger.com/profile/08119889774421336682noreply@blogger.comtag:blogger.com,1999:blog-5515692164785328338.post-57562223483258677742013-07-31T17:41:41.172-07:002013-07-31T17:41:41.172-07:00One problem with your atmosphere numbers--the limi...One problem with your atmosphere numbers--the limit on compressed air is for a short dive. That's above the safety limit for long term exposure to that much oxygen and you'll also be dealing with the rapture of the deep from that much nitrogen.Loren Pechtelhttps://www.blogger.com/profile/08348494458707790769noreply@blogger.com