Advertisement

A Code for Shape Generation and Aerodynamic Design of Aircraft

Part of the Springer Optimization and Its Applications book series (SOIA, volume 66)

Abstract

Multidisciplinary preliminary optimization of aircraft requires an integrated framework, where different modules are capable to interact with each other. The code presented in this paper is a platform where shape modeling, grid generation, and aerodynamic configuration evaluation are integrated. In the geometric modeling module the aerodynamic configuration is defined, and the process of shape definition is easily achieved with the aid of specific features. In this optic, useful tools like section sketcher, airfoil manager, NACA airfoil generator, and flap sketcher are also available. Once the reference parameters are set, a NURBS description is given. In the meshing module structured or unstructured grids are built on the defined configuration. The structured grid is exported according to the most popular standards, in order to use it as input grid for panel method codes integrated within the aerodynamic module to carry out the aerodynamic configuration evaluation. The unstructured grid can be exported in different standard in order to eventually submit more accurate and time-consuming aerodynamic analysis by means of external CFD programs.

Keywords

Lift Coefficient Unstructured Grid Reference Parameter Panel Method Mobile Surface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

Thanks to Andrea Rimondi and Fabrizio Petri for their efforts in writing most of the geometric module features. Thanks to Giovanni Bernardini, Roma 3 University, for his contribution and suggestions on panel method theory and practice.

References

  1. 1.
    Bernardini, G.: Problematiche Aerodinamiche Relative alla Progettazione di Configurationi Innovative. Ph.D. thesis, Politecnico di Milano, Italy, Novembre 1999 Google Scholar
  2. 2.
    Carmichael, R.L., Erickson, L.L.: PAN AIR—a higher order panel method for predicting subsonic or supersonic linear potential flows about arbitrary configurations. In: American Institute of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conference 14th, Palo Alto, CA, June 23–25, p. 35 (1981), Number AIAA-1981-1255 Google Scholar
  3. 3.
    Cavallaro, R.: A code for surface modeling and grid generation coupled to a panel method for aerodynamic configuration design. Tesi di laurea specialistica, Università di Pisa, Italy (2009) Google Scholar
  4. 4.
    Chambers, J.R.: Innovation in flight: research of the NASA Langley Research Center on revolutionary advanced concepts for aeronautics. In: NASA SP. National Aeronautics and Space Administration (2005) Google Scholar
  5. 5.
    Craidon, C.B.: A description of the Langley Wireframe Geometry Standard (LaWGS) format. Technical Report TM 85767, NASA, February (1985) Google Scholar
  6. 6.
    Erickson, L.L.: Panel methods—an introduction. Technical Report NASA Technical Paper 2995, NASA (1990) Google Scholar
  7. 7.
    Johnson, F.T., Tinoco, E.N., Yu, N.J.: Thirty years of development and application of CFD at Boeing commercial airplanes. In: Seattle, O. (ed.) AIAA 16th CFD Conference, No. 2003-3439, Orlando, FL, 23–26 June (2003) Google Scholar
  8. 8.
    Katz, J., Plotkin, A.: Low-Speed Aerodynamics. Cambridge Aerospace Series. Cambridge University Press, Cambridge (2001) MATHGoogle Scholar
  9. 9.
    Maskew, B.: Program VSAERO theory document. Technical Report Contractor Report 4023, NASA, September (1987) Google Scholar
  10. 10.
    Moreton, H.P.: Minimum curvature variation curves, networks, and surfaces for fair free-form shape design. Ph.D. thesis, Berkeley, CA, USA (1992) Google Scholar
  11. 11.
    Morino, L.: A finite-element formulation for subsonic flows around complex configurations. Technical Report NASA-CR-138142, NASA (1973) Google Scholar
  12. 12.
    Petri, F.: Sviluppo del codice ADS per la generazione parametrica di superfici aerodinamiche mediante NURBS. Tesi di laurea, Università di Pisa, Italy (2005) Google Scholar
  13. 13.
    Piegl, L., Tiller, W.: The NURBS Book. Springer, New York (1997) CrossRefGoogle Scholar
  14. 14.
    Pourazady, M., Xu, X.: Direct manipulation of B-Spline and NURBS curves. Adv. Eng. Softw. 31, 107–118 (2000) MATHCrossRefGoogle Scholar
  15. 15.
    Rimondi, A.: Generazione di configurazioni aerodinamiche mediante NURBS. Tesi di laurea, Università di Pisa, Italy (2005) Google Scholar
  16. 16.
    Welch, W., Witkin, A.: Variational surface modeling. In: SIG-GRAPH ’92: Proceedings of the 19th Annual Conference on Computer Graphics and Interactive Techniques, New York, NY, USA (1992) Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Department of Aerospace EngineeringSan Diego State UniversitySan DiegoUSA
  2. 2.Department of Aerospace EngineeringUniversity of PisaPisaItaly

Personalised recommendations