On Thu, Oct 31, 2013 at 10:59 AM, Henry Spencer <henry@xxxxxxxxxxxxxxx>wrote: > Given that you want high storage > pressures to get sizable amounts of gas into small tanks, Oh? This is an orbital module, and its RCS, not a launcher or stage. Isp is only slightly dependent on tank pressure for GOX/GH2. I would think low pressures and a large inflatable balloon would be nearly ideal; aluminized mylar? -- -george william herbert george.herbert@xxxxxxxxx