Burning fuel made Akron lighter, and a lighter airship normally had to vent expensive helium to remain controllable. Its recovery apparatus condensed water chiefly from engine exhaust, with some ambient-air condensation also discussed, so ballast could replace part of the consumed fuel. The system never achieved the intended pound-for-pound exchange. Fuel, ballast, supplies, and aircraft all competed inside the same lift budget. A structural girder obstructed the aft hangar positions, leaving room for three aircraft in normal practice even though the hangar was planned for four and the ship was designed around five.
Notable Point · 1:37:14-1:39:53
Saving helium while carrying fewer aircraft than planned
Exhaust-water recovery reduced the need to vent scarce helium, while an obstructing girder cut Akron's practical aircraft complement below its five-aircraft design goal.