NASA Pathfinder

Pathfinder Pathfinder Plus
Pathfinder in flight over Hawaii
Role	Remote controlled UAV Type of aircraft
Manufacturer	AeroVironment
Primary user	NASA ERAST Program
Number built	1
Developed into	NASA Centurion NASA Helios

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 (ERAST) 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.^[1] They were developed further into the NASA Centurion and NASA Helios aircraft.