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FLIGHT CONTROLS MENU Side sticks 1/25 FLIGHT CONTROLS MENU Side sticks 2/25 In the A320 family, manual roll and pitch are controlled by the side sticks. They are spring-loaded to neutral and receive no feedback from the flight controls. FLIGHT CONTROLS MENU Side sticks 3/25 Movement of one side stick will not cause movement of the other. In this case, as the left side stick is moved, the right remains in the neutral position. FLIGHT CONTROLS MENU Side sticks 4/25 You can see that, as one side stick is pushed forward, the elevators move down in response. All side stick commands are processed through the flight control computers before being sent to the control surfaces. DOWN FLIGHT CONTROLS MENU Side sticks 5/25 In this example, as the side sticks are moved in opposite directions, the elevators remain in the neutral position. If both side sticks are operated at the same time, their deflections are algebraically added together. DOWN NEUTRAL + UP = FLIGHT CONTROLS MENU Side sticks 6/25 Here, as both side sticks are moved forward, the elevators achieve normal full down deflection but no more. When both side sticks are moved in the same way, the total demand is never more than full deflection on only one side stick. Partially down Partially down + Partially down = FULL DOWN FLIGHT CONTROLS MENU Side sticks 7/25 When either autopilot is engaged, both side sticks lock into their neutral position. Notice that if a pilot applies sufficient force, the side sticks become free and the autopilot disengages with audio and visual warnings. Moovvee tthhee lleefftt ssiiddee ssttiicckk.. FLIGHT CONTROLS MENU Side sticks 8/25 When either autopilot is engaged, both side sticks lock into their neutral position. Notice that if a pilot applies sufficient force, the side sticks become free and the autopilot disengages with audio and visual warnings. Noo,, cclliicckk oonn tthhee lleefftt ssiiddee ssttiicckk ttoomoovvee iitt.. FLIGHT CONTROLS MENU Side sticks 9/25 When either autopilot is engaged, both side sticks lock into their neutral position. Notice that if a pilot applies sufficient force, the side sticks become free and the autopilot disengages with audio and visual warnings. Noo,, cclliicckk oonn tthhee lleefftt ssiiddee ssttiicckk ttoomoovvee iitt.. FLIGHT CONTROLS MENU Side sticks 10/25 The autopilot has disengaged. The associated audio and visual warnings will continue until cancelled by the crew. As you will performed this many times in your simulator sessions, we will now continue with the autopilot disconnect and take over pb. FLIGHT CONTROLS MENU Side sticks 11/25 The autopilot has been re-engaged for you. Each side stick is fitted with a red autopilot disconnect and side stick take-over pb. By pressing it, a pilot disconnects the autopilot. Diissccoonnnneecctt tthhee aauuttooppiilloott.. FLIGHT CONTROLS MENU Side sticks 12/25 The autopilot has been re-engaged for you. Each side stick is fitted with a red autopilot disconnect and side stick take-over pb. By pressing it, a pilot disconnects the autopilot. Noo,, pprreessss eeiitthheerr aauuttooppiilloott ddiissccoonnnneecctt ppbb.. FLIGHT CONTROLS MENU Side sticks 13/25 The autopilot has been re-engaged for you. Each side stick is fitted with a red autopilot disconnect and side stick take-over pb. By pressing it, a pilot disconnects the autopilot. Noo,, pprreessss eeiitthheerr aauuttooppiilloott ddiissccoonnnneecctt ppbb.. FLIGHT CONTROLS MENU Side sticks 14/25 FLIGHT CONTROLS MENU Side sticks 15/25 Notice, on the FCU, that the autopilot has disconnected. The associated audio and visual warnings: • can be cancelled by pressing the autopilot disconnect pb a second time or • will stop automatically. FLIGHT CONTROLS MENU Side sticks 16/25 Yoouu aarree ssiittttiinngg oonn tthhee lleefftt,, ttaakkee pprriioorriittyy.. A side stick priority logic is also available. Let’s study it in more detail. By pressing and holding a take-over pb, a pilot can deactivate the opposite side stick. Audio and visual indications are provided to identify which pilot has control of the aircraft. FLIGHT CONTROLS MENU Side sticks 17/25 A side stick priority logic is also available. Let’s study it in more detail. By pressing and holding a take-over pb, a pilot can deactivate the opposite side stick. Audio and visual indications are provided to identify which pilot has control of the aircraft. Noo,, cclliicckk oonn tthhee lleefftt ttaakkee oovveerr ppbb ssw.. FLIGHT CONTROLS MENU Side sticks 18/25 A side stick priority logic is also available. Let’s study it in more detail. By pressing and holding a take-over pb, a pilot can deactivate the opposite side stick. Audio and visual indications are provided to identify which pilot has control of the aircraft. Noo,, cclliicckk oonn tthhee lleefftt ttaakkee oovveerr ppbb ssw.. FLIGHT CONTROLS MENU Side sticks 19/25 You heard the audio warning, notice there is also a red SIDE STICK PRIORITY arrow in front of the F/O indicating that his side stick is inoperative. The arrow points left showing that the Captain has control. If the First Officer had taken over, the message would have been “Priority right” and the red arrow in front of the Captain would have illuminated. To see what happens when the deactivated side stick is moved…. Moovvee tthhee FF//O ssiiddee ssttiicckk.. FLIGHT CONTROLS MENU Side sticks 20/25 You heard the audio warning, notice there is also a red SIDE STICK PRIORITY arrow in front of the F/O indicating that his side stick is inoperative. The arrow points left showing that the Captain has control. If the First Officer had taken over, the message would have been “Priority right” and the red arrow in front of the Captain would have illuminated. To see what happens when the deactivated side stick is moved…. Noo,, cclliicckk oonn FF//O ssiiddee ssttiicckk.. FLIGHT CONTROLS MENU Side sticks 21/25 You heard the audio warning, notice there is also a red SIDE STICK PRIORITY arrow in front of the F/O indicating that his side stick is inoperative. The arrow points left showing that the Captain has control. If the First Officer had taken over, the message would have been “Priority right” and the red arrow in front of the Captain would have illuminated. To see what happens when the deactivated side stick is moved…. Noo,, cclliicckk oonn FF//O ssiiddee ssttiicckk.. FLIGHT CONTROLS MENU Side sticks 22/25 … a green light illuminates in front of the pilot who has the aircraft control, here CAPT. FLIGHT CONTROLS MENU Side sticks 23/25 As soon as the deactivated side stick is returned to neutral, the green light extinguishes. If both pilots press their take-over pb, the last one gets the priority. If it is necessary to deactivate the opposite side stick permanently, press and hold the take-over pb for at least 40 s. FLIGHT CONTROLS MENU Side sticks 24/25 To reactivate a permanently deactivated side stick, either pilot has to press his take-over pb momentarily. Notice that both side stick priority lights are extinguished. FLIGHT CONTROLS MENU Side sticks 25/25 NEXT Simultaneous control inputs are never recommended. If the pilot nonflying must make a control input, he must press his take over pb. In case of simultaneous control inputs, both green side stick priority lights will flash. We will now study the Normal law module. MMoodduullee ccoommpplleetteedd FLIGHT CONTROLS MENU Side sticks 26/25 LLIISSTTOOFFSSUUBBJJEECCTTSS EXIT AUDIO GLOSSARY FCOM RETURN SSIIDDEESSTTIICCKKSS CCOOMMMMAANNDDPPRROOCCEESSSSIINNGG AAUUTTOOPPIILLOOTT&&SSIIDDEESSTTIICCKKSS TTAAKKEEOOVVEERRppbbssww |
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