A. Büscher, B.A. Mertol, R. Radespiel

Wing tip devices have been identified as a key technology to reduce emission and noise by decreasing the induced drag at all stages of flight. They are not only interesting for new aircraft design, but also for existing aircraft due to their opportunity of retrofitting. Based on a previous design study at high speeds, a novel wing tip design has been found. This paper addresses the low speed behaviour. First, numerical results of conventional wing tip devices are validated at take-off condition using wind tunnel data. Then, the novel design is assessed. Due to poor flow behaviour at low speed, moving parts, mounted to the trailing and leading edges respectively, are investigated for possible improvement. While the former device cannot advance the aerodynamic performance, the latter reduces the drag at the design point and extends the operating range of the configuration.

CEAS/KATnet Conference on Key Aerodynamic Technologies, Bremen, 2005

Conference Paper

englisch

21,0 x 29,7 cm, 9 Seiten

DGLR-Bericht, 2005, 2005-07, CEAS/KATnet Conference on Key Aerodynamic Technologies - Proceedings; S.1-9; 2005; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

in getr. Zählung;

aerodynamics, drag

Bibliothek

2005