Discrete sweeping jets as tools for separation control

N. Lucas, L. Taubert, R. Woszidlo, I. Wygnanski, M. A. McVeigh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

Abstract

Experiments aimed at delaying flow separation through discrete jets pointing in the direction of streaming and sweeping side-to-side along the span were conducted on two airfoils, a NACA0015 and a V-22 airfoil with and without deflected trailing edge flaps. The results indicated substantial drag reduction and lift increase at moderately low inputs of mass and momentum. Additional experiments were carried out on a semi-span V-22 wing-nacelle combination and they too provided an increase in L/D of approximately 60%, even with the presence of nacelle drag and induced drag. The effectiveness of the sweeping jets on reducing the download force acting on a V-22 powered model in hover was also examined. A 29% reduction in download was realized using the embedded sweeping jets.

Original languageEnglish (US)
Title of host publication4th AIAA Flow Control Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781563479427
DOIs
StatePublished - Jan 1 2008

Publication series

Name4th AIAA Flow Control Conference

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Fluid Flow and Transfer Processes
  • Aerospace Engineering

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    Lucas, N., Taubert, L., Woszidlo, R., Wygnanski, I., & McVeigh, M. A. (2008). Discrete sweeping jets as tools for separation control. In 4th AIAA Flow Control Conference [2008-3868] (4th AIAA Flow Control Conference). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2008-3868