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Taming Turning Tendency

Taming Turning Tendency. Prof. H. Paul Shuch, Ph.D., CFII LSRM-A/GL/WSC/PPC, iRMT Heavy Chief Flight Instructor, Director of Maintenance AvSport of Lock Haven FAA Safety Team Lead Representative Piper Memorial Airport, Lock Haven PA. A FAASTeam Wings Safety Seminar. Brought to you by:.

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Taming Turning Tendency

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  1. Taming Turning Tendency Prof. H. Paul Shuch, Ph.D., CFII LSRM-A/GL/WSC/PPC, iRMT Heavy Chief Flight Instructor, Director of Maintenance AvSport of Lock Haven FAA Safety Team Lead Representative Piper Memorial Airport, Lock Haven PA

  2. A FAASTeam Wings Safety Seminar

  3. Brought to you by: Sentimental Journey to Cub Haven Piper Memorial Airport AvSport of Lock Haven Your FAA Safety Team

  4. RATIONALE: Many pilots report (especially when flying Light Sport Aircraft) that raising the nose causes the plane to yaw in one direction, and lowering it yaws them in the opposite direction. This gives LSAs a reputation for being instable (or squirrely). In fact, these aircraft are merely obeying natural laws. In this FAA Wings Safety Seminar, a retired physics professor will teach you how to anticipate, detect, and conquer gyroscopic precession.

  5. OBJECTIVES:Upon successful completion of this seminar, you will: • Visualize Cartesian coordinates • Predict precession effects • Anticipate aircraft yaw response • Respond with decisive rudder • Overcome lateral instability • Avoid hitting the runway lights

  6. Caveat: • The procedures shown here are used successfully by one particular instructor, in one particular category and class of aircraft. They may not apply in your situation. Your mileage may vary. Disclaimer: • Nothing in this presentation should be considered a substitute for adequate dual training, conducted by an appropriately rated flight instructor familiar with your particular aircraft. Waiver: • By viewing this presentation, you understand and agree that: • Flying is a sport • There is risk associated with all sports • You accept that risk

  7. Getting to know you…

  8. Which of the following are you?(choose one that bestdescribes you) • Student Pilot • Sport Pilot • Private Pilot • Commercial Pilot / ATP • Flight Instructor

  9. Introduction:The Axis of Evil

  10. Pitch, Roll, and Yaw Axes:

  11. Rene Descartes(French mathematician and philosopher, 1596-1650)

  12. CARTESIANCOORDINATES

  13. Mutually Orthogonal

  14. CARTESIANCOORDINATES

  15. Quiz Time!

  16. For purposes of this course, we will consider the direction in which the aircraft is traveling to be: • The X-axis • The Y-axis • The Z-axis • Any axis we choose • None of the above

  17. PRINCIPLES OF THE GYROSCOPE

  18. PRECESSION (Y) (X) (Z)

  19. PRECESSION (Z) (X) (Y)

  20. PRECESSION

  21. PRECESSION

  22. Another Question!

  23. If the aircraft is traveling down the runway (into the page), and you raise or lower the nose, the plane will precess in: • The X-axis • The Y-axis • The Z-axis • All three axes • None of the above

  24. CARTESIANCOORDINATES

  25. FOUR DEGREES OF FREEDOM

  26. AILERONS CONTROL ROLL(your bank control)

  27. RUDDER CONTROLS YAW(your directional control)

  28. ELEVATOR CONTROLS PITCH(your airspeed control)

  29. THROTTLE CONTROLS POWER(your altitude control)

  30. Sometimes, you just gotta dance!

  31. Doh!

  32. Gyroscopic precession is best corrected through application of • elevator • rudder • ailerons • throttle • flaps

  33. IF SOMETHING ROTATES,IT CAN PRECESS

  34. I know this one!

  35. Gyroscopic precession is least evident in a(n) • Airplane • Gyroplane • Powered parachute • Glider • Equally evident in all

  36. TAKEOFFAND LANDINGARE TRICKIEST

  37. Final Question!

  38. Gyroscopic precession can be observed during: • Rotation • Flare • Go-around • Power-on stalls • Any of the above

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