Effective flow control for rotorcraft applications at flight mach mumbers (invited)

Hassan Nagib, John Kiedaisch, David Greenblatt, Israel Wygnanski, Ahmed Hassan

Research output: Contribution to conferencePaperpeer-review

Abstract

Pulsating zero-mass flux jets introduced from spanwise slots at various locations on the upper surface of an oscillating VR-7 airfoil model are shown to be effective in controlling lift, moment and drag coefficients over the range of Mach numbers from 0.1 to 0.4. This control is demonstrated over a wide range of mean angles of attack of the oscillating airfoil from light to deep stall conditions. Maintaining the nondimensional frequency and amplitude of the forcing unchanged results in comparable modifications of the aerodynamic coefficients throughout this Mach number range. Therefore, it appears that this active-flow control technique is only limited by the ability to generate the adequate forcing conditions at the higher Mach numbers required for applications such as rotorcraft.

Original languageEnglish
StatePublished - 2001
Event15th AIAA Computational Fluid Dynamics Conference 2001 - Anaheim, CA, United States
Duration: 11 Jun 200114 Jun 2001

Conference

Conference15th AIAA Computational Fluid Dynamics Conference 2001
Country/TerritoryUnited States
CityAnaheim, CA
Period11/06/0114/06/01

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