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Aerodynamics 2 PDR

Aerodynamics 2 PDR. AAE 451: Team 2. Michael Caldwell Jeff Haddin Asif Hossain James Kobyra John McKinnis. Kathleen Mondino Andrew Rodenbeck Jason Tang Joe Taylor Tyler Wilhelm. Overview. 3-View Drawing Airfoil Selection Wing & Tail Geometry Control Surface Sizing & Effectiveness

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Aerodynamics 2 PDR

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  1. Aerodynamics 2 PDR AAE 451: Team 2 Michael Caldwell Jeff Haddin Asif Hossain James Kobyra John McKinnis Kathleen Mondino Andrew Rodenbeck Jason Tang Joe Taylor Tyler Wilhelm

  2. Overview • 3-View Drawing • Airfoil Selection • Wing & Tail Geometry • Control Surface Sizing & Effectiveness • Twist Distribution • Mathematical Model • Launch Conditions • L/DMAX & Endurance

  3. Aircraft 3-View • Mission Requirements • 15 min. endurance • Take-off distance ≤ 60 ft. • Vstall ≤ 15 ft./s • Vloiter ≤ 25 ft./s • 35 ft. turn radius

  4. Airfoil Selection: Wing SELIG 1210 AIRFOIL Selig 1210: M.S.Selig,J.J.Guglielmo,A.P.Broeren and P.Giguere,"Summary of Low-Speed Airfoil Data, Volume 1 – Wind Tunnel Data

  5. Airfoil Selection: Wing WORTMANN FX 63-137 Wortmann FX 63-137: M.S.Selig,J.F.Donovan and D.B.Fraser,"AIRFOIL AT LOW SPEEDS – Wind Tunnel

  6. Airfoil Selection: Wing SELIG – WORTMANN COMPARISON Selig 1210: M.S.Selig,J.J.Guglielmo,A.P.Broeren and P.Giguere,"Summary of Low-Speed Airfoil Data, Volume 1 – Wind Tunnel Data Wortmann FX 63-137: M.S.Selig,J.F.Donovan and D.B.Fraser,"AIRFOIL AT LOW SPEEDS – Wind Tunnel

  7. Airfoil Selection: Wing Wortmann FX67-137 Wortmann FX 63-137: M.S.Selig,J.F.Donovan and D.B.Fraser,"AIRFOIL AT LOW SPEEDS – Wind Tunnel

  8. Airfoil Selection: Wing Wortmann FX 63-137: M.S.Selig,J.F.Donovan and D.B.Fraser,"AIRFOIL AT LOW SPEEDS – Wind Tunnel

  9. Airfoil Selection: Wing Wortmann FX 63-137: M.S.Selig,J.F.Donovan and D.B.Fraser,"AIRFOIL AT LOW SPEEDS – Wind Tunnel

  10. Airfoil Selection: Wing CLmax vs. Re

  11. Airfoil Selection: Canard NACA 0012

  12. Airfoil Selection: Canard Abbott, I.H. & A.E. von Doenhoff, “Theory of Wing Sections”

  13. Airfoil Selection: Canard Abbott, I.H. & A.E. von Doenhoff, “Theory of Wing Sections”

  14. Airfoil Selection: Vertical Tails • Flat Plate • Non-Lifting Surface • No Volume Needed • Ease of Construction • Light Weight

  15. Geometry Wetted Area : 9.013 ft2

  16. Control Surfaces: Aileron • Span: 2.26 ft • Chord: 0.2 ft • Area: 0.45 ft2 AILERON force (lbf)

  17. Control Surfaces: Rudder (Single) • Span: 0.57 ft • Chord: 0.35 ft • Area: 0.20 ft2 RUDDER force (lbf)

  18. Control Surfaces: Elevator • Span: 1.8 ft • Chord: 0.23 ft • Area: 0.42 ft2 ELEVATOR force (lbf)

  19. Wing Twist Distribution • Root: 0.35o • Tip: -6.48o

  20. Wing Twist Distribution * *Neglecting Parasite Drag

  21. Mathematical Model • From Prandtl’s Classical Lifting-Line Theory

  22. Mathematical Model Re=147,820

  23. Mathematical Model * Raymer, Daniel P., Aircraft Design: A Conceptual Approach p.493

  24. Mathematical Model

  25. Launch Conditions • Vtake-off = 1.2Vstall = 18 ft/s • Climb Angle = 20o • Angle of Attack = 4.5o • αLo = -9.12o

  26. L/DMAX=10.75 αL/Dmax=0.60o L/DMAX Re=147,820

  27. L/DMAX L/DMAX Velocity • Loiter Straight: • VL/Dmax= 21.97 ft/s • Loiter Turn: • VL/Dmax= 23.12 ft/s Re=147,820

  28. Endurance Assumptions • Level Flight • No Acceleration • Loiter~Straight Time = Loiter~Turning Time Re=147,820

  29. Summary • 3-View Drawing • Airfoil Selection • Wing & Tail Geometry • Control Surface Sizing & Effectiveness • Twist Distribution • Mathematical Model • Launch Conditions • L/DMAX & Endurance • Questions?

  30. Appendix

  31. Mathematical Model No Wing Twist: Re=147,820

  32. Wing Twist Distribution

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