page_title: NASA Pathfinder
section_title: Specifications
hierarchical_section_title: NASA Pathfinder / Specifications
caption_attribution_description: English: "Solar Aircraft Evolution through the ERAST Program"
context_page_description: The NASA Pathfinder and NASA Pathfinder Plus were the first two aircraft developed as part of an evolutionary series of solar- and fuel-cell-system-powered unmanned aerial vehicles. AeroVironment, Inc. developed the vehicles under NASA's Environmental Research Aircraft and Sensor Technology program. They were built to develop the technologies that would allow long-term, high-altitude aircraft to serve as atmospheric satellites, to perform atmospheric research tasks as well as serve as communications platforms. They were developed further into the NASA Centurion and NASA Helios aircraft.
caption: Solar Aircraft Evolution through the ERAST Program
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