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Full-Span Flying Wing Wind Tunnel Test: A Body Freedom Flutter Study

Design and Optimization of an Aeroservoelastic Wind Tunnel Model

Institute of Aeroelasticity, German Aerospace Center (DLR), 37073 Göttingen, Germany
Institute of System Dynamics and Control, German Aerospace Center (DLR), 82234 Weßling, Germany
Author to whom correspondence should be addressed.
Fluids 2020, 5(1), 35;
Received: 30 January 2020 / Revised: 14 March 2020 / Accepted: 14 March 2020 / Published: 17 March 2020
(This article belongs to the Special Issue Flow and Aeroelastic Control)
Through the combination of passive and active load alleviation techniques, this paper presents the design, optimization, manufacturing, and update of a flexible composite wind tunnel model. In a first step, starting from the specification of an adequate wing and trailing edge flap geometry, passive, static aeroelastic stiffness optimizations for various objective functions have been performed. The second optimization step comprised a discretization of the continuous stiffness distributions, resulting in manufacturable stacking sequences. In order to determine which of the objective functions investigated in the passive structural optimization most efficiently complemented the projected active control schemes, the condensed modal finite element models were integrated in an aeroelastic model, involving a dedicated gust load alleviation controller. The most promising design was selected for manufacturing. The finite element representation could be updated to conform to the measured eigenfrequencies, based on the dynamic identification of the model. Eventually, a wind tunnel test campaign was conducted in November 2018 and results have been examined in separate reports. View Full-Text
Keywords: composite optimization; aeroservoelasticity; wind tunnel testing composite optimization; aeroservoelasticity; wind tunnel testing
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MDPI and ACS Style

Dillinger, J.K.S.; Meddaikar, Y.M.; Lübker, J.; Pusch, M.; Kier, T. Design and Optimization of an Aeroservoelastic Wind Tunnel Model. Fluids 2020, 5, 35.

AMA Style

Dillinger JKS, Meddaikar YM, Lübker J, Pusch M, Kier T. Design and Optimization of an Aeroservoelastic Wind Tunnel Model. Fluids. 2020; 5(1):35.

Chicago/Turabian Style

Dillinger, Johannes K. S., Yasser M. Meddaikar, Jannis Lübker, Manuel Pusch, and Thiemo Kier. 2020. "Design and Optimization of an Aeroservoelastic Wind Tunnel Model" Fluids 5, no. 1: 35.

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