Pathfinder-Plus in flight over Hawaii.
EC98-44629-58
Pathfinder-Plus in flight over Hawaii. The goal of the flights was to validate new solar, aerodynamic, propulsion, and systems technology developed for the Pathfinder’s successor, the Centurion/Helios Prototype, which was designed to reach and sustain altitudes in the 100,000-foot range.17 June 1998NASA Photo / Jim Ross› Pathfinder-Plus Project Description