At 33,000 ft (10,000 m), the cabin pressure equaled atmospheric pressure at 10,000 ft (3,000 m). Solar panels suspended beneath the gondola recharged the on-board lead-acid batteries that provided electrical power.
At a height of 33,000 feet (10,000 meters), cabin pressure matched atmospheric pressure at 10,000 feet (3,000 meters). Solar panels on the gondola provided power to the onboard lead-acid batteries.