Investigation of Phenomena of Discrete Wingtip Jets
Final technical rept. May 1986-Aug 1988
TENNESSEE UNIV SPACE INST TULLAHOMA GASDYNAMICS DIV
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Detail flow phenomena of discrete wingtip jets blowing from a rectangular wing with squared edges and round tips are investigated in the water-and wind-tunnel experiments, Phenomena on a single asymmetric jet blowing from a flat-plate in crossflow were incorporated into the present wingtip jet study. The local flow field perturbation introduced by the tip jet blowing closely resembles that of the asymmetric jet from the flat-plate. The wingtip jet has influenced the global surface pressure distribution over the wing and improved the lift loading. A simple mathematical model is developed for practical calculation of wing loading. Keywords Wing performance Lift augmentation Discrete jets, Wingtip jet blowing Asymmetric jet Jet in crossflow Tip blowing Vortex control Jet vortices Flow visualizations Jet application Wingtip vortex wake Tip vortex dispersion Water tunnel tests Wind tunnel tests.
- Fluid Mechanics