Low Speed High Lift Validation Tests within the European Project EUROLIFT II

Abstract

The present paper describes the wind tunnel tests performed within the framework of the European High-Lift Project EUROLIFT II and focuses on the discussion of their results. The goal of the project is to optimize and validate numerical and theoretical methods for exact prediction of the aerodynamics of an aircraft in high-lift configuration at flight Reynolds numbers. To increase the basic understanding of complex high-lift aerodynamics and to produce comparative data for numerical design methods, wind tunnel test were executed inthe Airbus Low Speed Windtunnel (LSWT) and the European Transonic Windtunnel (ETW). During these tests, which covered low and high Reynolds number conditions, the model complexity was increased stepwise up to a fully high-lift aircraft configuration. Various measurement techniques were applied to gain the maximum of aerodynamic information. Because the presentation of a complete results analysis is far beyond the scope of this paper it gives an overview over the test facilities, the used test techniques and highlights selected results.