Review of vortex flow flight projects on the F-106B

NASA-Langley's F-106B research aircraft is being used in vortex flow-research flight experiments in order to determine the effects of Re number and Mach number on the lee-side vortex system generated at angles-of-attack up to maneuver condition, as well as to evaluate the aerodynamic characteristics of a sharp leading-edge vortex flap system. The wing vortex system is visualized at a fixed position by means of the vapor-screen technique. Comparisons are made between a measured value and two theoretical estimates of a pertinent vortex system property, core location.