A short history of the European Transonic Wind Tunnel ETW

Green, John; Quest, Jürgen

doi:10.1016/j.paerosci.2011.06.002

Cited by 52 publications

(18 citation statements)

References 29 publications

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“…Remark 1. In many practical processes such as power plants [23], wind tunnels [24], there exists future target information that can be used in feedforward design. When the MPC algorithm is applied to real systems, the closed-loop performance is related to the accuracy of the model and the future target information.…”

Section: Sliding Pressure Operationmentioning

confidence: 99%

Triple-Mode Model Predictive Control Using Future Target Information

Chen

Zhao

2020

Processes

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In this paper, we propose a triple-mode model predictive control (MPC) algorithm that uses future target information to improve tracking performance. To explicitly take into account the future target information in the MPC optimization, the proposed triple-mode control law encompasses three parts: (i) the future target information feedforward, (ii) the output feedback, and (iii) the extra degrees of freedom for constraint satisfaction. The first two parts of the control law are off-line designed through unconstrained MPC, and the optimal future trajectory horizon is obtained by golden section search based on the integral of squared error (ISE) criterion. The final part is calculated by the on-line MPC algorithm aiming to satisfy constraints. Furthermore, we analyze the feasibility and convergence properties of the proposed algorithm. The method is demonstrated by the simulation of the shell fundamental control problem and also tested on the coordinated control problem in the power plant. The test results show that the proposed algorithm can increase tracking performance dramatically due to the proper selection of future trajectory horizon.

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Section: Sliding Pressure Operationmentioning

confidence: 99%

Triple-Mode Model Predictive Control Using Future Target Information

Chen

Zhao

2020

Processes

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“…This configuration was tested several times in the European Transonic Wind Tunnel ETW [8] ETW is a cryogenic pressurized wind tunnel, enabling the investigation of pure deformation effects by simultaneously varying pressure and temperature. Among the available database, tests at Mach 0.85 and 32.5 millions Reynolds number are presented here.…”

Section: Experimental Databasementioning

confidence: 99%

Prediction of the aerodynamic effect of model deformation during transonic wind tunnel tests

Mouton

Sant

Lyonnet

2013

IJESMS

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During wind tunnel tests, any aircraft model deforms as a result of aerodynamic loads. This behaviour is generally regarded as a spurious effect of the testing technique that needs to be accounted for and corrected. This paper presents available optical technique to measure wing deformation in ONERA wind tunnels, and introduces a simulation method to predict the effect of the deformation on the model aerodynamic characteristics.

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“…This type of test requires the wind tunnel to be able to adjust the temperature and pressure independently. Only several facilities all over the world, such as European Transonic Windtunnel (ETW), National Transonic Facility (NTF), have such ability [23,24]. However, the test condition is limited by the strength of model material.…”

Section: Introductionmentioning

confidence: 99%

A Fast Correction Method of Model Deformation Effects in Wind Tunnel Tests

et al. 2018

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The influence of model deformation needs to be corrected before the aerodynamic force data measured in the wind tunnel is applied to aircraft design. In order to obtain the aerodynamic forces on rigid model shape, this paper presents a fast correction method by establishing a mathematical modelling method connecting aerodynamic forces and wing section torsion. The aerodynamic force coefficients on rigid model shape can then be calculated quickly just by setting section torsion to zero. A 25-point simulation dataset of the High Reynolds Number Aero-Structural Dynamics (HIRENASD) model generated by Computational Fluid Dynamics (CFD) and Static Computational Aeroelasticity (CAE) approach is used to investigate the influence of section locations, basis function type, support radius, and deformation perturbation on the prediction accuracy. Finally, the present correction method is applied to predict the aerodynamic forces on the rigid shape of a NASA common research model. The results of parametric analysis and application show that the present correction method with the Wendland's C6 function and a support radius of 1.0 can provide a reasonable prediction of aerodynamic forces on the rigid model shape.

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A short history of the European Transonic Wind Tunnel ETW

Cited by 52 publications

References 29 publications

Triple-Mode Model Predictive Control Using Future Target Information

Triple-Mode Model Predictive Control Using Future Target Information

Prediction of the aerodynamic effect of model deformation during transonic wind tunnel tests

A Fast Correction Method of Model Deformation Effects in Wind Tunnel Tests

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