Basics of Airbus fly by wire

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Basics of Airbus fly by wire

  1. 1. Airbus A320 simulator flight Basic idea of Airbus fly by wire Jacklyn Wu IVAO HK Standing Committee on Aviation Resource and Education Development IVAOHK
  2. 2. Objective • Basic understanding of flight controls • Flight control laws/modes of Airbus family • Handling characteristics of Airbus family IVAOHK
  3. 3. Four Forces IVAOHK
  4. 4. Primary Flight Controls IVAOHK
  5. 5. Mechanical Flight Control Systems IVAOHK
  6. 6. Fly by wire Flight Control Systems IVAOHK
  7. 7. Fly by wire Flight Control Systems IVAOHK
  8. 8. Fly by wire Airbus Flight Control Laws IVAOHK Normal Law Alternative Law Direct Law Ground Mode Flight Mode Flare Mode
  9. 9. Ground Mode IVAOHK Surface deflection is proportional to stick deflection
  10. 10. Flight mode - Protections IVAOHK Load Factor Protection • 2.5 g in clean configuration, • 2.0 g with the flaps extended.
  11. 11. IVAOHK Flight mode - Protections Pitch Protection • 30 degree up / 15 degree down
  12. 12. Flight mode - Protections IVAOHK High Speed Protection
  13. 13. Flight mode - Protections IVAOHK
  14. 14. Flight mode - Protections IVAOHK
  15. 15. Flight mode – Pitch Control IVAOHK
  16. 16. Flight mode – Pitch Control if there is no input on the stick: • The aircraft maintains the flight path, even in case of speed changes • In case of configuration changes or thrust variations, the aircraft compensates for the pitching moment effects • In turbulence, small deviations occur on the flight path. However, the aircraft tends to regain asteady condition. IVAOHK
  17. 17. Flight mode – Pitch Control • Flare requires the pilot to apply permanent aft pressure on the sidestick, in order to achieve a progressive flare. • Whereas, derotation consists of smoothly flying the nosegear down, by applying slight aft pressure on the sidestick. IVAOHK
  18. 18. Flight mode – Roll Control IVAOHK
  19. 19. Flight mode – Roll Control During a normal turn (bank angle less than 33 °), in level flight: • The more the sidestick is moved laterally, the greater the resulting roll rate - e.g. 15 °/s at max deflection • Not necessary to make a pitch correction • Not necessary to use the rudder. In the case of steep turns (bank angle greater than 33 °) • Lateral pressure on the sidestick to maintain bank • Aft pressure on the sidestick to maintain level flight. IVAOHK
  20. 20. Contact us http://ivao.hk IVAOHK
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