Large Aircraft Control

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Large Aircraft Control

  1. 1. Have more control surfaces.<br />Hydraulics<br /><ul><li>Power boosted
  2. 2. Irreversible</li></ul>Power Boosted: Hydraulic system is in parallel with pilot in control movement. Doesn’t move them FOR him, it assists him.<br />Irreversible: Hydraulics in series with controls. When pilot moves control stick, it moves a valve, which moves the surface. Pilot does not have direct connection into the system. These are more reliable and simpler overall working. However, there is no feedback during movement, so they put in springs or somesuch thing to give artificial feedback.<br />Boeing 727<br /><ul><li>Ailerons and spoilers on wings for roll control.
  3. 3. Inboard and outboard, use varies depending on speed. Generally, in flight, inboard ailerons and spoilers are used for control.
  4. 4. On ground, used for air brakes during landing.
  5. 5. Balance tabs. Used for roll trim. Also used as servo tabs for backup.
  6. 6. Empennage
  7. 7. Elevators
  8. 8. Pitch control
  9. 9. Moveable horizontal stabilizer for trim.
  10. 10. Rudder for yaw control. Also has yaw dampers (Dutch Roll)
  11. 11. Upper and lower rudder. A system powers one, B system powers the other. Redundancy.
  12. 12. Rudder also has balance tabs. (see 1.C)
  13. 13. Triple slotted fowler flaps on wings.
  14. 14. Extend down and back. Open slots and they extend.
  15. 15. Leading edge flaps
  16. 16. Inboard side.
  17. 17. Usually Krueger type flaps.
  18. 18. Outboard side slats. (deployable)
  19. 19. Boundary layer control

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