NASA: F-106B 57-2516, NASA N816NA Fibre-Reinforced Plastic (FRP) is used to test leading edge flaps made from composite materials. "New composites that will be used to create lighter yet stronger aircraft wings."
Public domain film from NASA edited by Jeff Quitney, slightly cropping to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization.
Read more about the NASA Vortex Flap Research at http://www.f-106deltadart.com/nasa_vortex_flaps.htm