EC05-0198-12A NASA model motorized sailplane catches a thermal during one of 17 flights to demonstrate that updrafts can extend flight time and save energy for small UAVs.Image Credit: NASA/Carla Thomas Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/amf-ec05-0198-12/Copy URL to clipboard> DownloadShareTakenAugust 12, 2005ProducerAFRCImage CreditNASA/Carla ThomasSize1920x1536pxPIA NumberEC05-0198-12