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Titel:

Euler-based Induced Drag Estimation for Highly Non-planar Lifting Systems during Conceptual Design

Autor(en): J. Schirra, J. Watmuff
Zusammenfassung: 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.
Veranstaltung: Deutscher Luft- und Raumfahrtkongress 2013, Stuttgart
Verlag, Ort: Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2013
Medientyp: Conference Paper
Sprache: englisch
Format: 21,0 x 29,7 cm, 8 Seiten
URN: urn:nbn:de:101:1-20131223808
Stichworte zum Inhalt: highly non-planar, induced drag estimation
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Veröffentlicht am: 20.12.2013