Stall

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  • Citi ETL RJ Wronski Associates, Inc.
  • Citi ETL RJ Wronski Associates, Inc.
  • Citi ETL RJ Wronski Associates, Inc.
  • Citi ETL RJ Wronski Associates, Inc.
  • Citi ETL RJ Wronski Associates, Inc.
  • Stall

    1. 1. The Stall
    2. 2. The Stall A condition of an aerofoil or aircraft when the airflow is so obstructed that lift is lost
    3. 3. What we are going to look at
    4. 4. What we are going to look at <ul><li>1. What is happening to our glider at the stall / why it is happening </li></ul>
    5. 5. What we are going to look at <ul><li>1. What is happening to our glider at the stall / why it is happening </li></ul><ul><li>2. The telltale signs or clues </li></ul>
    6. 6. What we are going to look at <ul><li>1. What is happening to our glider at the stall / why it is happening </li></ul><ul><li>2. The telltale signs or clues </li></ul><ul><li>3. Finally, how to recover to normal flight condition </li></ul>
    7. 11. The Stall
    8. 12. The Stall
    9. 13. The Stall
    10. 14. The Stall
    11. 15. The Stall
    12. 19. Symtoms of the approaching stall <ul><li>Nose above the normal attitude </li></ul>
    13. 20. Symtoms of the approaching stall <ul><li>Nose above the normal attitude </li></ul><ul><li>Airspeed slow and reducing </li></ul>
    14. 21. Symtoms of the approaching stall <ul><li>Nose above the normal attitude </li></ul><ul><li>Airspeed slow and reducing </li></ul><ul><li>Air noise changes </li></ul>
    15. 22. Symtoms of the approaching stall <ul><li>Nose above the normal attitude </li></ul><ul><li>Airspeed slow and reducing </li></ul><ul><li>Air noise changes </li></ul><ul><li>Ailerons become effected </li></ul>
    16. 23. Symtoms of the approaching stall <ul><li>Nose above the normal attitude </li></ul><ul><li>Airspeed slow and reducing </li></ul><ul><li>Air noise changes </li></ul><ul><li>Ailerons become effected </li></ul><ul><li>Glider buffets </li></ul>
    17. 24. Symtoms of the approaching stall <ul><li>Nose above the normal attitude </li></ul><ul><li>Airspeed slow and reducing </li></ul><ul><li>Air noise changes </li></ul><ul><li>Ailerons become effected </li></ul><ul><li>Glider buffets </li></ul><ul><li>Elevator will not raise the nose </li></ul>
    18. 26. The recovery
    19. 27. The recovery <ul><li>Ease stick forwards </li></ul>
    20. 28. The recovery <ul><li>Ease stick forwards </li></ul><ul><li>Regain flying speed </li></ul>
    21. 29. The recovery <ul><li>Ease stick forwards </li></ul><ul><li>Regain flying speed </li></ul><ul><li>Return to normal flying attitude </li></ul>
    22. 30. Unaccelerated stall
    23. 31. Unaccelerated stall
    24. 32. Mushing stall
    25. 33. Mushing stall

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