Reduced Order Transonic Aeroelastic Gust Response Simulation of Large Aircraft

2017 ◽  
Author(s):  
Philipp Bekemeyer ◽  
Sebastian Timme
Keyword(s):  
Reduced Order ◽  
Gust Response ◽  
Large Aircraft

scholarly journals Reduced Order Modelling of Aircraft Gust Response for Use in Early Design Stages

2017 ◽  
Author(s):  
Stephen P. Williams ◽  
Dorian Jones ◽  
Ann Gaitonde ◽  
Chris Wales ◽  
Samantha J. Huntley
Keyword(s):  
Reduced Order ◽  
Early Design ◽  
Reduced Order Modelling ◽  
Early Design Stages ◽  
Gust Response

A methodological exploration for efficient prediction of airfoil response to gusts in wind engineering

2019 ◽  
Vol 233 (6) ◽  
pp. 738-750 ◽  
Author(s):  
Zhenlong Wu ◽  
Qiang Wang ◽  
Hao Huang
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Least Square ◽  
Efficient Estimation ◽  
Sharp Edge ◽  
Reduced Order ◽  
Efficient Prediction ◽  
Computational Fluid Dynamics Simulations ◽  
Dynamics Simulations ◽  
Gust Response

This paper presents several approaches for efficient estimation of airfoil response to gust via computational fluid dynamics and reduced-order modeling. A computational fluid dynamics code enabling simulation of aerodynamics under an arbitrary-shaped discrete gust is adopted. Convolution models using baseline sharp-edge gust response either obtained by the closed-form Küssner functions or computational fluid dynamics methods are established. A parametric approximation function model for gust response is identified via the least square optimization of the computational fluid dynamics-obtained sharp-edge responses. Finally, an example taking advantage of the aerodynamic response by the above methods to simulate the aeroelastics of an airfoil performing a plunging-twisting coupled motion under various gusts is presented. The present practice indicates that the reduced-order modelings are not only more efficient compared to direct computational fluid dynamics simulations, but also have a satisfactory accuracy in gust response predictions.

Aeroelastic behaviour of a wing including geometric nonlinearities

2011 ◽  
Vol 115 (1174) ◽  
pp. 767-777 ◽  
Author(s):  
M. Y. Harmin ◽  
J. E. Cooper
Keyword(s):  
Aspect Ratio ◽  
Rational Fraction ◽  
Reduced Order Models ◽  
Structural Modelling ◽  
Geometric Nonlinearities ◽  
Reduced Order ◽  
Aerodynamic Model ◽  
Aeroelastic Model ◽  
Non Linear ◽  
Gust Response

Abstract A procedure for developing efficient aeroelastic reduced order models (ROMs) for aerospace structures containing geometric nonlinearities is described. The structural modelling is based upon a combined modal/FE approach that describes the non-linear stiffening effects from results of non-linear static analyses for a range of prescribed inputs. Once the structural ROM has been defined, it is coupled to the rational fraction approximation of the doublet lattice aerodynamic model corresponding to the wing planform. The aeroelastic model can then be used to predict the dynamic aeroelastic behaviour of the defined structure. The methodology is demonstrated on the aeroelastic model of a flexible high aspect ratio wing with the static deflections, LCO behaviour and gust response being predicted.

scholarly journals Application of Reduced Order Models in Aircraft Gust Response Studies

2016 ◽  
Author(s):  
Stephen P. Williams ◽  
Dorian Jones ◽  
Ann Gaitonde ◽  
Chris Wales ◽  
Samantha J. Huntley
Keyword(s):  
Reduced Order Models ◽  
Reduced Order ◽  
Gust Response
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