NASA ERAST Program

The Environmental Research Aircraft and Sensor Technology, or ERAST program was a NASA program to develop cost-effective, slow-flying unmanned aerial vehicles (UAVs) that can perform long-duration science missions at altitudes above 60,000 ft (18,000 m). The project included a number of technology development programs conducted by the joint NASA-industry ERAST Alliance. The project was formally terminated in 2003.^[1]