J. Schirra, J. Watmuff

Implementation of Euler-based induced drag estimation is considered exemplary for two planar and two highly non-planar lifting systems employing farfield analysis technique. Basic induced drag characteristics are provided by means of established farfield analysis as well as on linear potential methodology employing a vortex-lattice approach. Euler-based span efficiencies are found to agree reasonably with those predicted by potential theory, although individual spanloads and downwash distribution differ considerably. Particularly for the crescent biplane, reduced downwash compensates performance penalties introduced by uneven distribution of lift. Supposed impact of non-linear flow filed properties like wake roll-up on induced drag characteristics of highly non-planar lifting systems could not be verified for configurations under consideration.

Deutscher Luft- und Raumfahrtkongress 2013, Stuttgart

Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2013

Conference Paper

englisch

21,0 x 29,7 cm, 8 Seiten

urn:nbn:de:101:1-20131223808

highly non-planar, induced drag estimation

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20.12.2013