Accession Number : ADA138782

Title :   Airfoil Interaction with an Impinging Vortex.

Descriptive Note : Technical paper,

Corporate Author : NATIONAL AERONUATICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER

Personal Author(s) : McAlister,K W ; Tung,C

PDF Url : ADA138782

Report Date : Feb 1984

Pagination or Media Count : 86

Abstract : THE TIP OF A FINITE-SPAN AIRFOIL WAS USED TO GENERATE A STREAMWISE VORTICAL FLOW, THE STRENGTH OF WHICH COULD BE VARIED BY CHANGING THE INCIDENCE OF THE AIRFOIL. The vortex that was generated traveled downstream and interacted with a second airfoil on which measurements of lift, drag, and pitching moment were made. The flow field, including the vortex core, was visualized in order to study the structural alterations to the vortex resulting from various levels of encounter with the downstream airfoil. These observations were also used to evaluate the accuracy of a theoretical model.

Descriptors :   *Vortices, *Airfoils, *Flow fields, Trajectories, Interactions, Stalling, Downstream flow, Angle of incidence, Flow visualization, Mixing, Aerodynamic stability, Lift, Aerodynamic drag, Pitch(Motion), Vortex generators

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE