We have nearly 100 of our flight qualified, ultralight fuel tanks in stock. These lightweight high pressure tanks make the high mass ratio (and low empty weight) of our pressure fed rocket systems possible: without this factor, our projected missions would be impossible. Note that all our mass projections are based on measured systems mass, not theoretical predictions.
Our NGLL systems use four to ten of these fuel tanks. The Ten tanks hold up to 350 pounds of fuel, and (with less than 50 pounds system empty weight) this makes the landing of a 300 pound astronaut (with pressure suit and life support) on the Moon possible. This is our Crusader HTS (Human Transport System) configuration.
More from the Space Fellowship HERE.