Abstract
A flow visualization measurement scheme was validated in flight. Strake vortex trajectories and axial core velocities were determined using pulsed smoke and high speed video. A gothic strake, operated at an angle of attack of 220 and a Reynolds number of approximately 7.8 x 105 per foot, was used to generate a vortex over the wing of a GA-7 Cougar. The maximum axial velocities measured in the vortex core were between 1.75 and 1.95 times the freestream velocity. These experimental data were in good agreement with previously published measurements and predictions. Analysis of the pulsed smoke system's effect on forebody vortices indicates that the system may effect the orientation of the forebody vortex system. Further study with regard to these effects is warranted.
Dorsett, Kenneth Merle (1993). Validation of an in-flight flow visualization scheme to quantitatively measure vortical flow phenomena. Master's thesis, Texas A&M University. Available electronically from
https : / /hdl .handle .net /1969 .1 /ETD -TAMU -1993 -THESIS -D718.