Experimental Investigation of the Positions of the Leadir/g-Edge Vortices above Slender Delta Wings with Various Rhombic Cross-Sections in Subsonic Conical Flow
نویسنده
چکیده
The positions of the centres of the leading-edge vortices above four slender wings have been located at several angles of incidence using a Kiel tube probe, and measured using a mutual inductance method of &stance measurement. This method was developed for use in this experiment to provide accurate information about the position of a probe in the flow field by measuring the mutual inductances between a coil on the probe and two coils fixed in the wing. The method enabled changes in the probe's position of 0932 inch to be detected and measured without touching the probe itself or disturbing the flow field round it, and it is capable of being developed to give even greater accuracy. The variation with incidence of the positions of the centres of the vortices abovo four slender wings whose rhombic cross-sections have leading-edge angles of x/6, n/3, x/2 and 2x/3 have been determined and arc presented in this report. The results show how the development with incidence of the leading-cage vortices above such wings is affoctcd by the size of the cdgc angle of the wings' cross-sections.
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