Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-25T22:08:17.129Z Has data issue: false hasContentIssue false
  • English
  • Français

HALE wing experiments and computational models to predict nonlinear flutter and dynamic response

Published online by Cambridge University Press:  19 June 2019

E. M. Amato Open the ORCID record for E. M. Amato [Opens in a new window] ,
C. Polsinelli ,
E. Cestino ,
G. Frulla ,
N. Joseph ,
R. Carrese  and
P. Marzocca
E. M. Amato*
Affiliation:
Politecnico di Torino, Dept Mechanical and Aerospace Eng. (DIMEAS), Turin, Italy
C. Polsinelli
Affiliation:
Politecnico di Torino, Dept Mechanical and Aerospace Eng. (DIMEAS), Turin, Italy
E. Cestino
Affiliation:
Politecnico di Torino, Dept Mechanical and Aerospace Eng. (DIMEAS), Turin, Italy
G. Frulla
Affiliation:
Politecnico di Torino, Dept Mechanical and Aerospace Eng. (DIMEAS), Turin, Italy
N. Joseph
Affiliation:
RMIT University, School of Engineering, Melbourne, Australia
R. Carrese
Affiliation:
RMIT University, School of Engineering, Melbourne, Australia
P. Marzocca
Affiliation:
Politecnico di Torino, Dept Mechanical and Aerospace Eng. (DIMEAS), Turin, Italy RMIT University, School of Engineering, Melbourne, Australia
Get access Rights & Permissions [Opens in a new window]

Abstract

Experimental and numerical investigations into the linear and nonlinear aeroelastic behaviour of very flexible High Altitude Long Endurance (HALE) wings are conducted to assess the effect of geometrical nonlinearities on wings displaying moderate-to-large displacement. The study shows that the dynamic behaviour of wings under large deflection, and specifically the edgewise and torsion natural frequencies and modal characteristics, are largely affected by the presence of geometrical nonlinearities. A modular wing structure has been manufactured by rapid prototyping and it has been tested to characterise its dynamic and aeroelastic behaviour. At first, several simple isotropic cantilever beams with selected crosssections are numerically investigated to extract their modal characteristics. Experiments are subsequently conducted to validate the geometrically nonlinear dynamics behaviour due to high tip displacement and to understand the influence of the beam cross-section geometry. The structural dynamics and aeroelastic analysis of a very flexible modular selected wing is then investigated. Clean-wing wind-tunnel tests are carried out to assess flutter and dynamic response. The wind-tunnel model display interesting aeroelastic features including the substantial influence of the wing large deformation on its natural frequencies and modal characteristics.

Keywords

aeroelasticitystructural dynamicsgeometrical nonlinearityflexible wing
Type
Research Article
Information
The Aeronautical Journal , Volume 123 , Issue 1264 , June 2019 , pp. 912 - 946
Copyright
© Royal Aeronautical Society 2019 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

ANSYS® Academic Research CFD, Release 16, Help System, Fluent User Guide, ANSYS, Inc.Google Scholar
Arena, A., Lacarbonara, W. and Marzocca, P. Non-linear aeroelastic formulation and postflutter analysis of flexible high-aspect-ratio wings, J Aircraft, 2013, 50, (6), pp 1748–1764.CrossRefGoogle Scholar
Banerjee, J.R., Xiang, Liu and Hassan, I.K. Free vibration and flutter characteristic of high aspect ratio aircraft wing, 12th Conference on Dynamical Systems- Theory and Applications, At Lodz, Poland.Google Scholar
Brit, R.T., Ortega, D., Tigue, J. MC and Scott, M.J. Wind Tunnel Test if a Very Flexible Aircraft Wing, AIAA Paper 2012, 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Honolulu, Hawaii, April.CrossRefGoogle Scholar
Cestino, E., Frulla, G. and Marzocca, P. A reduced order model for the aeroelastic analysis of flexible wings, SAE International Journal of Aerospace, 2013, 6, (2), pp 447–458. doi:10.4271/2013-01-2158.CrossRefGoogle Scholar
Cestino, E., Frulla, G., Perrotto, E. and Marzocca, P. Theoretical and experimental flutter predictions in high aspect ratio composite wings, SAE International Journal of Aerospace, 2011, 4, (2), pp 1365–1372. doi:10.4271/2011-01-2722.CrossRefGoogle Scholar
Cestino, E., Frulla, G., Perrotto, E. and Marzocca, P. Experimental slender wing model design by the application of aeroelastic scaling laws, J Aerospace Engineering, 2014, 224, (1), pp 112–120.CrossRefGoogle Scholar
Dowell, E., Edwards, J. and Strganac, T. Nonlinear aeroelasticity, J Aircraf, 40, (5), 2003, pp 857–874.CrossRefGoogle Scholar
Dowell, E. and Tang, D. Experimental and theoretical study on aeroelastic response of high-aspect-ratio wing, AIAA J, August 2001, 39, (8), pp 1430–1441.Google Scholar
Dowell, E. and Tang, D. Nonlinear Aeroelasticity and Unsteady Aerodynamics, AIAA Paper 2002-0003, 40th AIAA Aerospace Sciences Meeting & Exhibit, Reno, NV, January, 2002.CrossRefGoogle Scholar
Hodges, D.H. and Alvin Pierce, G. Introduction to Structural Dynamics and Aeroelasticity, Cambridge University Press. 9780511809170. URL http://dx.doi.org/10.1017/cbo9780511809170.005.Google Scholar
Lee-Rausch, E. and Baitina, J.T. Wing flutter computations using an aerodynamic model based on the Navier-Stokes euations. Journal of Aircraft, November 1996, 33, (6), pp 1139–1147. ISSN 1533-3868. URL http://dx.doi.org/10.2514/3.4706.CrossRefGoogle Scholar
Frulla, G., Cestino, E. and Marzocca, P. Critical behaviour of slender wing configurations, Part G: Journal of Aerospace Engineering, May 2001, 224, (1), pp 587–600.Google Scholar
Hassig, H.G. An approxumate true damping solution of the flutter equation by determinant iteration, Journal of Aircraft, November 1971, 8, (11), pp 885–889. ISSN 1533–3868. URL http://dx.doi.org/10.2514/3.44311.CrossRefGoogle Scholar
Jaworski, J.W. Nonlinear Aeroelastic Analysis of Flexible High Aspect Ratio Wings Including Correlation With Experiment, Ph.D. Dissertation, Graduate School of Duke University, Durham, NC, 2009.Google Scholar
Jian, Z. and Jinwu, X. Nonlinear aeroelastic response of high-aspect-ratio flexible wings, Chinese Journal of Aeronautics, August 2009, 22, (4), pp 355–366. doi:10.1016/S1000-9361(08)60111-9.CrossRefGoogle Scholar
Patil, M.J. and Hodges, D.H. Limit-cycle oscillations in high-aspect-ratio wings, Journal of Fluids and Structures, 2001, 15, (1), pp 107–132.CrossRefGoogle Scholar
Patil, M.J. and Hodges, D.H. On the importance of aerodynamic and structural geometrical nonlinearities in aeroelastic behaviour of high-aspect ratio wings, Journal of Fluids and Structures, 2004, 19, (7), pp 905–915.CrossRefGoogle Scholar
Tang, D.M. and Dowell, E.H. Experimental and theoretical study on aeroelastic response of high-aspect-ratio wings, AIAA J, 2001, 39, (8), pp 1430–1441.CrossRefGoogle Scholar