Testing thus far, including a flight hauling 130 pounds for NASA, shows a fairly benign descent. But the full-scale capsule and passengers will weigh 8,000 pounds in all. In theory, the parafoil simply needs to be proportionally larger as payload weight increases, and the company hopes to be flight testing with 8,000-pound dummy capsules by the end of this year. But MacCallum admits that, because parafoils are very rarely designed and used at this scale, testing could hit a wall. A giant parafoil could be harder to keep inflated than a smaller one, and the larger the backup chutes have to be, the more energy it will take to deploy them.