Title: Rotor Tip Vortex Geometry Measurements Using the Wide‐Field Shadowgraph Technique
Abstract: Rotor tip vortex geometry data have been acquired using the wide-field shadowgraph technique. Shadowgraphs were taken of the wakes of two model main-rotor systems in hover. These shadowgraphs provided detailed tip vortex trajectories from which axial and radial vortex coordinates were measured. Using these coordinates, prescribed-wake parameters were determined and input into a hover-performance prediction code. The resultant predictions were compared with experimental performance data to help assess the capabilities of this code. Another result of the experimental work was the development of a method to predict the visibility of rotor tip vortices on shadowgraphs. Using this method, the ability of the shadowgraph technique to visualize tip vortices in the rotor wake was quantified.
Publication Year: 1987
Publication Date: 1987-04-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 46
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