Investigation of Phenomena of Discrete Wingtip Jets

Abstract

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.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1988
Accession Number
ADA199962

Entities

People

  • A. D. Vakili
  • J. D. Mo
  • Jingen Wu
  • Zhisheng Shi

Organizations

  • University of Tennessee Space Institute

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Air Force
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Flow
  • Flow Fields
  • Flow Visualization
  • Fluid Dynamics
  • Load Distribution
  • Mathematical Models
  • Models
  • Pressure Distribution
  • Pressure Measurement
  • Three Dimensional
  • Turbulent Mixing
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Combustion and Flow Dynamics.