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Investigation of the Effects of Propeller Slipstream and Tilt Angle on the Control Device Effectiveness of a Tiltwing Aircraft

Autor(en): Y. Dobrev, T. Ostermann, J. Holsten, D. Moormann
Zusammenfassung: In order to fulfill its design missions, the unmanned tiltwing aerial vehicle AVIGLE has to be able to operate in a speed range from 0 to 40 m/s. Flight operations at speeds higher than 15 m/s are performed in a conventional configuration with the wing in horizontal position. To achieve stable flight conditions at lower velocities the main wing including propulsion is tilted upwards, so that a part of the engine thrust is added to the lift force. This influences the aircraft geometry, which means that the flow conditions at the different control devices change significantly, thus altering their effectiveness. Furthermore, the huge overlap between wing and propeller disc leads to the fact, that a change in thrust settings also notably influences the effectiveness of the ailerons and partly of elevator and rudder. In order to gain better understanding of the aircraft's flight dynamics, those effects were analyzed using wind tunnel investigations. The resulting aerodynamic database was then integrated in a 6-dof simulation, which is used for control system design and system validation.
Veranstaltung: Deutscher Luft- und Raumfahrtkongress 2012, Berlin
Verlag, Ort: Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2015
Medientyp: Conference Paper
Sprache: englisch
Format: 21,0 x 29,7 cm, 8 Seiten
URN: urn:nbn:de:101:1-2015020615969
Stichworte zum Inhalt: Ruderwirksamkeit, Tiltwing
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Veröffentlicht am: 06.02.2015