ATA 27 cours finis 6q.odt

***Electrical flight control:*** *comprendre principe* FCDC: - concentration of the data sent by FCC, FCU and BCM - Display and recording of this data - FWS - BITE with CMS Electrical backup: - 4 BPS - 1 BCM unit if 4 FCC failures = backup automatically activated removing inhibitio...

***Electrical flight control:*** *comprendre principe* FCDC: - concentration of the data sent by FCC, FCU and BCM - Display and recording of this data - FWS - BITE with CMS Electrical backup: - 4 BPS - 1 BCM unit if 4 FCC failures = backup automatically activated removing inhibition signals to the BPS Location: - PRIM **1** = 1**1**00VU - PRIM **2** = 1**2**00VU - PRIM **3** and SEC = 1**3**00VU - CPIOM 1 and 2 = 1000VU Primary flight controls: Aileron architecture: \*aileron : 1 convent , one electro static... savoir ! eha/ebha ou pas Elevator: normal driven by S/C and by an EHA Rudder: 2 EBHA THS: operated by THSA can be driven by 1 of 3 motors Normal = 1 hydraulic motor active and other standby both hydraulic motor can work together for higher performance required electrical motor in case of loss 2 hydraulic motor Spoiler: 5 spoiler (1 **EBHA** and 2,3,4,5 **S/C**) spoiler 2 linked to PRIM 1 and SEC spoiler control = SSU and speed brake toggle switches to reduce speed increasing the drag Control and indications: Sidestick: - spring loaded to neutral position - not mechanically coupled - with autopilote, locked in neutral position Red button on ssu to take priority =\> + sidestick priority flash Info moving ailerons, spoilers... F/CTL Page *Trim :* reglé au debut avant le vol mais auto apres Spoiler: *GND spoiler:* case of Touch down, landing etc. you don't want ro prevent jumping... Normal law: ** *Degraded operating modes:* High lift: a torque shaft transmission transmit PCU power to 8 down drive gear boxes simultaneously flaps full = **47° (with 0 ,1,2,3,4,full position =47°)** PCU: the 2 motor are coupled by a diferential gearbox **One motor** is able to drive the system at **half speed/double operating times( pas la valeur, juste exemple).** if failures = power off brakes in PCU as well as W(ing)T(ip)B(rakes) are able to stop surface movement to prevent flaps asymmetry Component PCU: TSSU to ensure we have the same speed to compare them , in case of diff speed =\> WTB Feedback position pick off unit : postion of the flap Control and indications: Baulk prevent unwant pull back Location: PCU in center wing box