Applying numerical optimization to realistic high-lift design of transport aircraft – an overview of the aerodynamic design optimisation investigations within the EUROLIFT II project

Kurzfassung

The EUROLIFT II project, funded by the European Commission within the 6th framework programme, is dedicated to the investigation of transport aircraft in high-lift configuration. It covers both numerical and experimental studies, mainly targeted towards validation of CFD for maximum lift prediction of such configurations. It is a follow up to the EUROLIFT project of the 5th framework programme. While in the former project a simplified wing-body high-lift configuration was investigated, the new project focuses on a more realistic configuration including engine nacelles, pylons, tracks and brackets. Additionally the next step is undertaken coming from analysis to design. Since it is a main aim of the project to deal with realistic configurations, this design will be done at a Reynolds number comparable to flight conditions of a real transport aircraft. The design activity within the project is targeted towards an improvement of the aerodynamic properties of the DLR-F11 model already used in EUROLIFT. The investigations mainly focus on an increased take-off performance by modifying the trailing edge flap both in shape and position.