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Bridget Fitzpatrick Patrick Dempsey Heather Garber Keith Hout Jong Soo Mok

ORION AEROSPACE. Aerodynamics Preliminary Design Review #2 October 23, 2000. Bridget Fitzpatrick Patrick Dempsey Heather Garber Keith Hout Jong Soo Mok. ORION AEROSPACE. Objectives. -Three View Drawing Update -Coefficient of Lift -Methods Update: Warner and Roskam -Drag Polar

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Bridget Fitzpatrick Patrick Dempsey Heather Garber Keith Hout Jong Soo Mok

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  1. ORION AEROSPACE Aerodynamics Preliminary Design Review #2 October 23, 2000 Bridget Fitzpatrick Patrick Dempsey Heather Garber Keith Hout Jong Soo Mok

  2. ORION AEROSPACE Objectives -Three View Drawing Update -Coefficient of Lift -Methods Update: Warner and Roskam -Drag Polar -Lift to Drag Curve -Endurance Parameter -CMARC Update -Aerodynamic Effectiveness of the Control Surfaces -Stability Derivatives

  3. ORION AEROSPACE Aircraft Geometry – 3-View SID5

  4. ORION AEROSPACE Coefficient of Lift

  5. ORION AEROSPACE Aerodynamic Mathematical Model WARNER

  6. ORION AEROSPACE Aerodynamic mathematical model Roskam 3-D Coefficient of Lift

  7. ORION AEROSPACE Aerodynamic mathematical model Roskam 3-D Coefficient of Lift

  8. ORION AEROSPACE Aerodynamic mathematical model Roskam 3-D Coefficient of Lift Slope

  9. ORION AEROSPACE Aerodynamic mathematical model Roskam 3-D Coefficient of Drag

  10. ORION AEROSPACE 3-D Drag Polar Optimum CL~1

  11. ORION AEROSPACE Lift to Drag Ratio

  12. ORION AEROSPACE Endurance Parameter:

  13. ORION AEROSPACE Endurance:

  14. ORION AEROSPACE Flight Conditions for maximum endurance L/D max:7.2 Velocity: 20.52ft/s Angle of Attack: 8.37 degrees CL: 1.03 CD: 0.16

  15. ORION AEROSPACE Coefficient of Moment

  16. ORION AEROSPACE Coefficient of Moment Calculations Equations taken from Mark Peters thesis

  17. ORION AEROSPACE Coefficient of Moment Calculations Equations taken from Mark Peters thesis

  18. ORION AEROSPACE Aircraft Geometry -SM: the static margin was set at 0.18

  19. ORION AEROSPACE Aircraft Geometry

  20. ORION AEROSPACE

  21. ORION AEROSPACE Control Surfaces

  22. ORION AEROSPACE Aerodynamic Effectiveness of the control surfaces Rudder Effectiveness: 60% Elevator Effectiveness: 60% Aileron Effectiveness: 30% Effectiveness determined from Roskam’s Flight Dynamics and Controls

  23. ORION AEROSPACE Stability Derivatives -Theoretical Method: This was presented on Tuesday. -Will be compared to CMARC CMARC needs: -working wake -will use to verify theoretical derivatives

  24. ORION AEROSPACE Aerodynamic coefficients

  25. ORION AEROSPACE Questions?

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