Shadowgraph flow visualization of isolated tiltrotor and rotor/wing wakesShadowgraph flow visualization images were acquired from a 0.184-scale tiltrotor and wing in hover. Measurements and details of the vortex core structure were examined as a function of thrust condition and wake age. Experimental data for the isolated rotor wake geometry and rotor wake interactions with a semi-span wing and image plane were acquired. Quantitative measurements and comparisons of wake geometry and distortion were made for three configurations: the isolated rotor, rotor/wing, and rotor/wing/image plane. Comparisons between tiltrotor and helicopter rotor wake geometry measurements were made. Experimental wake geometry data were also compared with two wake models. Suggestions for improvements to existing prescribed-wake and free-wake models are proposed.
Document ID
19930051999
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Swanson, Alexandra A. (Sterling Software, Inc. Moffett Field, CA, United States)
Light, Jeffrey S. (NASA Ames Research Center Moffett Field, CA, United States)