Accession Number : ADP005018

Title :   Unsteady Airload Computations for Airfoils Oscillating in Attached and Separated Compressible Flow,

Corporate Author : NATIONAL AEROSPACE LAB AMSTERDAM (NETHERLANDS)

Personal Author(s) : Houwink,R.

Report Date : NOV 1985

Pagination or Media Count : 8

Abstract : Recent developments in coupled inviscid flow-boundary layer computations are discussed for airfoils in unsteady motion in attached and separated subsonic and transonic flow. The applicability of quasi-simultaneous strong interaction coupling procedures for transonic small perturbation theory and boundary layer integral methods is illustrated for oscillating airfoils with shock-induced separation. The relevance of the predicted airfoils for aeroelastic applications is illustrated using the analysis of an aeroelastic instability of a supercritical wing wind-tunnel model.

Descriptors :   *AERODYNAMIC LOADING, COMPRESSIBLE FLOW, AIRFOILS, OSCILLATION, INVISCID FLOW, BOUNDARY LAYER FLOW, FLOW SEPARATION, ATTACHMENT, COMPUTATIONS, SUBSONIC FLOW, TRANSONIC FLOW, COUPLING(INTERACTION), PERTURBATIONS, AEROELASTICITY, SUPERCRITICAL WINGS, NETHERLANDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE