A Study on the Performance of the Wing In Ground Effect by a Vortex Lattice Method

와류 격자법에 의한 지면효과익의 성능 연구

  • Published : 1998.05.30

Abstract

A numerical simulation was done to investigate the performance of thin wings in close vicinity to ground. The simulation is based on Vortex Lattice Method(VLM) and freely deforming wake elements are taken into account for a sudden acceleration case. The parameters covered in the simulation are angle of attack, aspect ratio, ground clearance, sweep angle and taper ratio. In addition, the effect of the wing endplate on the ground effect is included. The wing sections used for present computations are uncambered, cambered and S-types. The present computational results are compared with other published computational results and experimental data.

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References

  1. ASME Journal of Fluids Engineering v.107 Calculation of the Aero dynamic Force on Automotive Lifting Surface Katz, J.
  2. Journal of aircraft v.22 no.1 A Vortex Lattice Method for general, Unsteady Aerodynamics Konstadinopoulos, P.(et al.)
  3. Journal of Aircraft v.26 no.12 Numerical Simulation of Wings in Steady and Unsteady Ground Effects Nuhait A. O.;Mook, D. T.
  4. Calculation of Potential Flow about Arbitrary 3-D Lifting Bodies Hess, John L.
  5. Aerodynamics for Engineers(2nd ed.) Bertin J. J.;Smith, M. L.
  6. Effect of Ground Proximity on the Aerodynamic Characteristics of Aspect Ratio 1 Airfoils with and without Endplates Carter A. W.
  7. Program VSAERO, A Computer Program for Calculating the Nonlinear Aerodynamic Characteristics of Arbitrary Configurations Maskew, B.
  8. Proceedings of Workshop on Twenty-First Century Flying Ships A Study of the Efficiency of the Wing-in-Ground-Effect Concept Day, Alexander H.;Lawrence J.
  9. Low-Speed Aerodynamics from theory to Panel Method Katz,J.;Plotkin, A.
  10. Wind Tunnel Test Results of the Ground Effects of Three Thin Wing Sections with Various Endplate Shapes Chun H. H.(et al.)
  11. Proc. of FAST'97 Wind Tunnel Test Results for Eight and twenty Passenger Class Wing in Ground Effect Ships Shin M.S.(et al.)