The balloons are superpressure balloons filled with helium, stand across and tall when fully inflated, and carry a custom air pump system dubbed the "Croce" that pumps in or releases air to ballast the balloon and control its elevation.
They carry a custom air pump system dubbed the "Croce" that pumps in or releases air to ballast the balloon and control its elevation. The balloons are superpressure balloons filled with helium, standing across and tall when fully inflated.
The balloons are superpressure balloons filled with helium, standing across and tall when fully inflated. They carry a custom air pump system dubbed the "Croce" that pumps in or releases air to ballast the balloon and control its elevation.
The balloons are superpressure balloons filled with helium, standing across and tall when fully inflated. They carry a custom air pump system dubbed the "Croce" that pumps in or releases air to ballast the balloon and control its elevation.