An Experimental Benchmark of a Very FlexibleWing

Avin, Or; Raveh, Daniella E.; Drachinsky, Ariel; Ben-Shmuel, Yaron; Tur, Moshe

doi:10.2514/6.2021-1709

Cited by 26 publications

(38 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The static tests performed include structural-only simulations and steady aeroelastic simulations and are used to compare SHARPy and the MRM models. The experimental results shown for both the structural tests and the wind tunnel tests have been obtained from [28]. In addition, throughout the rest of this paper several mentions are made to UM/NAST results [29]; these are used for reference since the beam models employed herein are developed from the UM/NAST one.…”

Section: Static Resultsmentioning

confidence: 99%

“…In addition, throughout the rest of this paper several mentions are made to UM/NAST results [29]; these are used for reference since the beam models employed herein are developed from the UM/NAST one. [10].…”

Section: Static Resultsmentioning

confidence: 99%

“…The Pazy wing [25] is a highly flexible wing, designed recently for wind tunnel aeroelastic experiments to serve as a benchmark for flexible wing studies. The wing model is shown in Fig.…”

Section: Case Study: Pazy Wingmentioning

confidence: 99%

“…Two different models were constructed: one without the cover and the other, with the cover and additional mass representing the mass of the accelerometer at the tip and the cables. The models have been calibrated against ground vibration test measurements as described in [25].…”

Section: A Finite Element Modelmentioning

confidence: 99%

“…However, the data available is reduced and limited to a few angles of attack. Recently, a novel benchmark case has been presented by the research group at Technion [10] of a very flexible clamped wing for which a flutter test campaign has been planned.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Flutter predictions for very flexible wing wind tunnel test

Goizueta

Drachinsky

Wynn

et al. 2021

AIAA Scitech 2021 Forum

Self Cite

View full text Add to dashboard Cite

Two different nonlinear aeroelastic tool sets, SHARPy and the Modal Rotation Method (MRM), have been employed to predict and design a wind tunnel flutter test campaign of a very flexible wing, the Pazy Wing, as part of the 3rd Aeroelastic Prediction Workshop. The first method, SHARPy, uses geometrically exact beams coupled with an Unsteady Vortex Lattice, which is linearised about a deformed configuration, reduced by means of Krylov subspaces and analysed to compute the stability boundaries of the wing. The MRM is based on structural modal data, from either beam models or finite element models, coupled with a doublet-lattice aerodynamic model from ZAERO of the straight wing configuration. The excellent agreement between numerical and experimental data for structural-only and static aeroelastic analyses paves the way for predicting the stability boundaries of the Pre-Pazy wing with sufficient confidence for the safe design of a flutter wind tunnel test campaign.

show abstract

Section: Static Resultsmentioning

confidence: 99%

Section: Static Resultsmentioning

confidence: 99%

“…The Pazy wing [25] is a highly flexible wing, designed recently for wind tunnel aeroelastic experiments to serve as a benchmark for flexible wing studies. The wing model is shown in Fig.…”

Section: Case Study: Pazy Wingmentioning

confidence: 99%

Section: A Finite Element Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Flutter predictions for very flexible wing wind tunnel test

Goizueta

Drachinsky

Wynn

et al. 2021

AIAA Scitech 2021 Forum

Self Cite

View full text Add to dashboard Cite

show abstract

Static aeroelastic rolling of a highly flexible wing: Pazy wing with aileron

de Melo,

Bussamra,

Verri

2024

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

There is an increasing trend towards the use of higher aspect-ratio wings on commercial transport aircraft over the years. The well-known effect of slender wings on reducing fuel consumption are leading wing designs to higher aspect ratios and higher flexibility. There are many studies about the effects of geometric nonlinearities on aeroelastic behavior of high aspect-ratio, very flexible, wings. However, geometric nonlinearities may also significantly impact wings' aeroelastic behavior under nonsymmetrical conditions, specially when ailerons are deflected. Within this context, this work presents a static Fluid-Structure Interaction approach to evaluate the rolling characteristics of very flexible wings. First a modified version of the very flexible Pazy Wing, from Aeroelastic Prediction Workshop (AEPW-3), is proposed, now equipped with ailerons. Then, this work proposes a new framework to consider the geometric nonlinearity in a fluid-structure interaction, it loosely couples Full Potential aerodynamic solver with Implicit Nonlinear structural solver. The presented method was applied considering both linear and nonlinear structural analyses, with multiple aileron deflection angles. The results show that considering or neglecting geometric nonlinearities leads to qualitatively divergent predictions.

show abstract