Aeroelastic wind tunnel model for tail buffeting analysis using rapid prototyping technologies

Katzenmeier, Lukas; Vidy, Cyrille; Kolb, Alexander; Breitsamter, Christian

doi:10.1007/s13272-021-00523-9

Cited by 4 publications

(9 citation statements)

References 22 publications

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“…For this purpose, flexible lifting surfaces, 3D-printed from polylactide (PLA) with a Young's modulus of E = 3.5 GPa [15], are used. Katzenmeier et al presented computational buffeting results of the model, which supports the application of this material for aeroelastic buffeting wind tunnel models [14]. PLA is on the one hand strong enough to withstand the loads during the wind tunnel measurements, on the other hand flexible enough to be used for buffeting investigations.…”

Section: Design Of the Wind Tunnel Modelmentioning

confidence: 63%

“…More information about the modular wind tunnel model and its design process can be found in Katzenmeier et al [14].…”

Section: Design Of the Wind Tunnel Modelmentioning

confidence: 99%

“…The buffeting loads on the wind tunnel model are also predicted using a stochastic one-way coupling approach between the Computational Fluid Dynamics (CFD) results and a Finite-Element Model (FEM) in a random response solver. The approach is outlined in detail in Katzenmeier et al [6] and was already used in the development process of the presented wind tunnel model in Katzenmeier et al [14].…”

Section: Numerical Setupmentioning

confidence: 99%

“…In a cooperation between Airbus Defence and Space and the Chair of Aerodynamics and Fluid Mechanics at the Technical University of Munich, a flexible wind tunnel model for tail buffeting analysis using rapid prototyping material was developed and presented in Katzenmeier et al [14]. The model uses an aluminum fuselage with 3D-printed wing and horizontal tail (HTP) from polylactide (PLA).…”

Section: Introductionmentioning

confidence: 99%

“…Katzenmeier et al described the development process, manufacturing and preliminary experimental results of the model where the aerodynamic excitation in form of mean and root mean square (rms) values of transient pressures at one position each on the wing and on the HTP were shown [14]. In the present study, the instrumentation of the model is shown in detail along with more extensive aeroelastic measurement results of the model, including the analysis of both the aerodynamic excitation and the dynamic structural response using the above-mentioned sensors and additionally considering frequency spectra.…”

Section: Introductionmentioning

confidence: 99%

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Horizontal tail buffeting characteristics at wing vortex flow impact

2022

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Modern, high-agility aircraft configurations often suffer from tail buffeting at subsonic speeds and medium to high angles of attack. This structural dynamic excitation through the unsteady flow field can result in heavy structural damage and degraded handling qualities. A flexible wind tunnel half model was developed at the Chair of Aerodynamics and Fluid Mechanics of the Technical University of Munich in cooperation with the Department of Acoustics and Vibration of Airbus Defence and Space. To provide enough flexibility, the wing and horizontal tail plane (HTP) are 3D-printed from polylactide (PLA). The model is used to experimentally analyze buffeting and to validate computational buffeting prediction. The objective of the present work is to examine aeroelastic phenomena with the modular designed flexible wind tunnel model. The measurement campaign takes place at the Göttingen type wind tunnel A. The model is equipped with various sensors. For unsteady pressure measurements on the surface of the wing and the HTP, piezo-resistive Kulite pressure transducers are installed on the wing and on the HTP. In addition, the flow field is described on the basis of numerical simulation results. For analyzing the structural response resulting from buffeting, miniature accelerometers are installed at the tips of the wing and the HTP. Strain gauges are used for calculating bending strains. As a reference case, a fully aluminum model is equipped correspondingly, but without strain gauges. Dominant frequencies corresponding to the structural eigenmodes can be identified and are excited in the PLA-setup (Buffeting). The unsteady pressure fluctuations on the surfaces act as the aerodynamic excitation input (Buffet). The measured tip accelerations of wing and tail are compared to simulation results with a one-way coupling CFD-CSM simulation.

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Section: Design Of the Wind Tunnel Modelmentioning

confidence: 63%

“…More information about the modular wind tunnel model and its design process can be found in Katzenmeier et al [14].…”

Section: Design Of the Wind Tunnel Modelmentioning

confidence: 99%