1. Team “Canard” September 19th, 2006
Aerodynamics 2 PDR
Team “Canard”
September 19th, 2006

2. Overview Aircraft Geometry: Aerodynamic Mathematical Model:
- Airfoil selection for wing and tail
- Wing and tail configuration
- Aspect ratio and wetted area
- 3-View drawing
Aerodynamic Mathematical Model:
- CL
- CD
- CM
AAE 451 Team 1

3. Wing and Tail Geometry Wing Horizontal tail
Maximum velocity : 115 ft/s
Aircraft wetted area : ft2
Wing
Horizontal tail
Airfoil
MH 43
NACA 0006
Aspect ratio
8.65 6
Taper ratio
0.45
0.6
Sweep angle
9.95°
9.46°
Dihedral angle
0.85° 0°
Span
6 ft
1.79 ft
Area
4.16 ft2
0.54 ft2
Reynolds number
AAE 451 Team 1

4. 3-View Drawing
AAE 451 Team 1

5. Mathematical Model Lift Coefficient 3D:
(From Flight Stability and Automatic Control, Robert C. Nelson)
CL: Total Lift Coefficient
CLo: CL at α = 0
CL,αw: Lift coeff. slope for wing
CL,αt: Lift coeff. slope for tail
CL,δe: Lift coeff. slope due to δe
η: Dynamic pressure ratio
αw: Angle of attack for the wing
αt: Angle of attack for the tail
St/S: Horizontal Tail area/Wing area ratio
δe: Elevator deflection angle
AAE 451 Team 1

6. Wing Lift Coefficient
Less than 2π
AAE 451 Team 1

7. CL Plot for Wing
Blue Line: XFOIL
Red Line: 3D
AAE 451 Team 1

8. Tail Lift Coefficient
AAE 451 Team 1

9. CL Plot for Tail
Blue Line: XFOIL
Red Line: 3D
AAE 451 Team 1

10. Elevator Effect on CL AAE 451 Team 1
(From Flight Stability and Automatic Control, Robert C. Nelson)
AAE 451 Team 1

11. Maximum Lift Coefficient
Needed CLMax
CLMax from Lift Curve
Needed ΔCLMax: 0.32
AAE 451 Team 1

12. Mathematical Model
Drag Coefficient
Small due to Swet
AAE 451 Team 1

13. Drag Polar
Blue Line: XFOIL
Red Line: 3D
AAE 451 Team 1

14. Mathematical Model Moment Coefficient 3D:
(From Flight Stability and Automatic Control, Robert C. Nelson)
Cm,δe : Change of Cm due to δe
αw: Angle of attack for the wing
δe: Elevator deflection angle
Cm : Total Moment Coefficient
Cmo : Cm at α = 0
Cm,αw : Change of Cm due to αw
AAE 451 Team 1

15. Zero Moment Coefficientac cg
25%
33% lt
AAE 451 Team 1

16. Moment Coefficient
AAE 451 Team 1

17. Moment Coefficient
AAE 451 Team 1

18. Questions
Any Questions?
AAE 451 Team 1