NASA has led a two-day test at the Armstrong Flight Research Center in California on a new material that works to fold aircraft wings while in flight. The space agency said Friday the demonstration is part of the Spanwise Adaptive Wing project, which seeks to determine if a material called “shape memory alloy” provides the capacity to fold outer sections of aircraft wings and their control surfaces to different angles.
https://www.executivegov.com/2018/01/nasa-led-team-tests-new-material-to-fold-aircraft-wings/