T&R Report R-03: Observations of Unsteady Airfoil Flows (1966)

This report describes a pilot study investigation of two-dimensional unsteady flow about an airfoil passing through a narrow (or gust). Although the results are primarily photographic records of the flow observed, there are also included comments and sample calculations taken from existing and slightly extended theories of unsteady airfoil behavior. Such work appears in the appendix of the report. One of the main items of interest was the particular flow phenomena around the trailing edge specifically the visualization of the Kutta condition. In this conjunction, medium speed and "Fastax" films were made and should accompany the still photos contained in the report.