천음속 여객기의 받음각과 마하수에 따른 공력 해석

다국어 초록 (Multilingual Abstract)

This research computes the viscous flow field and aerodynamics around the model of a commercial passenger airplane, Boeing 747-400, which cruises in transonic speed. The configuration was realized through the reverse engineering based on the photo scanning measurement. In results, the pressure coefficients at the several wing section on the wing surface of the airplane was described and discussed to obtain the physical meaning. The lift coefficient increased almost linearly up to 17°. Here the maximum lift occurred at 18° according to the angle of attack And the minimum drag is expected at -2°. The maximum lift coefficient occurred at the Mach number 0.89, and the drag coefficient rapidly increased after the Mach number of 0.92. Also shear-stress transport model predicts slightly lower aerodynamic coefficients than other models and Chen’s model shows the highest aerodynamic values. The aerodynamic performance of the airplane elements was presented.

참고문헌 (Reference)

1 Marvin, P.F, "Wind-tunnel tests of a full-scale model of a light twin-engine airplane with fixed auxiliary airfoil or leading-edge slot" 1974

2 Bardina, J.E., "Turbulence modeling validation" 1997

3 Boppe, C.W., "Transonic flow field analysis for wing-fuselage configurations" 1980

4 Lee-Rausch, E.M., "Transonic drag prediction on a DLR-F6 transport configuration using unstructured grid solvers" 2004

5 McCroskey, W.L., "The Phenomenon of dynamic stall" 1981

6 David, W.L. et al., "Summary of data from the firs AIAA CFD drag prediction workshop" 2002

7 Rumsey, C.L., "Study of CFD Variation on transport configurations from the second drag-prediction workshop" 2004

8 Jou, W.H., "Practical considerations in aerodynamic design optimization" 1995

9 Johnson, W., "On the mechanism of dynamic stall" 17 : 36-45, 1972

10 Vos, J.B., "Navier-Stokes solvers in European aircraft design" 38 : 601-697, 2002

11 Alister, K.W., "Dynamic stall experiments on the NACA0012 airfoils" 1978

12 McCroskey, W.L., "Dynamic stall experiments on oscillating airfoils" 14 : 57-63, 1976

13 George, S.D., "Dynamic stall experiments on oscillating airfoils" 13 : 1354-1359, 1975

14 Martin, G., "Comparison of aerodynamic performance of raked wing tips and large winglets" Cranfield university 2006

15 Asley, H., "Aerodynamics of wings and bodies, Reading" Addison-Wesley Publishing Co. 1965