Discrete sweeping jets as tools for separation control

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

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

15 Citations (Scopus)

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
StatePublished - 2008
Event4th AIAA Flow Control Conference - Seattle, WA, United States
Duration: Jun 23 2008Jun 26 2008

Other

Other4th AIAA Flow Control Conference
CountryUnited States
CitySeattle, WA
Period6/23/086/26/08

Fingerprint

Airfoils
Drag
Drag reduction
Flow separation
Momentum
Experiments
Direction compound

ASJC Scopus subject areas

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

Cite this

Lucas, N., Taubert, L., Woszidlo, R., Wygnanski, I. J., & McVeigh, M. A. (2008). Discrete sweeping jets as tools for separation control. In 4th AIAA Flow Control Conference [2008-3868]

Discrete sweeping jets as tools for separation control. / Lucas, N.; Taubert, L.; Woszidlo, R.; Wygnanski, Israel J; McVeigh, M. A.

4th AIAA Flow Control Conference. 2008. 2008-3868.

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

Lucas, N, Taubert, L, Woszidlo, R, Wygnanski, IJ & McVeigh, MA 2008, Discrete sweeping jets as tools for separation control. in 4th AIAA Flow Control Conference., 2008-3868, 4th AIAA Flow Control Conference, Seattle, WA, United States, 6/23/08.
Lucas N, Taubert L, Woszidlo R, Wygnanski IJ, McVeigh MA. Discrete sweeping jets as tools for separation control. In 4th AIAA Flow Control Conference. 2008. 2008-3868
Lucas, N. ; Taubert, L. ; Woszidlo, R. ; Wygnanski, Israel J ; McVeigh, M. A. / Discrete sweeping jets as tools for separation control. 4th AIAA Flow Control Conference. 2008.
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