Accession Number : ADP006231

Title :   Unsteady Airloads due to Separated Flow on Airfoils and Wings,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Edwards, John W.

Report Date : SEP 1990

Pagination or Media Count : 18

Abstract : Experimental and computational studies of airloads due to separated flows over airfoils and wings conducted at the NASA Langley Research Center are surveyed. Results are presented for cases involving local flow separation such as shock-induced separation, for the initiation of leading-edge vortex flows, and for cases involving unsteady airloads due to flows separating over remote aircraft components. Good correlation is obtained between experiment and computation for cases of locally separating flow and steady computations of vortex over delta wings and complex forebody geometries are shown. Physical flow modeling issues and computational requirements for the case of vertical tail buffeting are developed.

Descriptors :   *AERODYNAMIC LOADING, *FLOW SEPARATION, DELTA WINGS, AIRFOILS, WINGS, CORRELATION, SHOCK, LEADING EDGES, VORTICES, UNSTEADY FLOW, TAIL ASSEMBLIES, BUFFETING.

Subject Categories : Aerodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE