-a Feedback Position Pick-Off Unit (FPPU) 28CV
-
two Asymmetry Position Pick-Off Units (APPU) 31CV(32CV)
-
two Wing Tip Brakes (WTB) 35CV(36CV).
The functions of the slats electrical control and monitoring system are:
-
to control the valve blocks electrically
-
to control the WTBs electrically
-
to receive data from and send data to the related systems
-
to monitor the power transmission for correct operation
-
to monitor the control system and power transmission for component failure
-
to monitor the inputs from and outputs to the related systems.
The system has a Built-In Test Equipment (BITE).
The slat/flap control lever controls the position of the slats. The CSU identifies the position of the slat/flap control lever and sends related signals to each SFCC. Each SFCC controls a valve block of a hydraulic motor, which is part of the slat PCU.
The two SFCCs monitor the operation of the transmission system. The FPPU (which is part of the slats PCU) and the two APPUs send signals to the SFCCs. They identify component failures of the transmission system and the control system. The Pressure-Off Brakes (POB) of the PCU and the WTBs stop and hold the transmission system when a failure occurs.
2. Component Location
__________________
(Ref. Fig. 001, 002, 003)
------------------------------------------------------------------------------FIN I FUNCTIONAL DESIGNATION I PANELIZONEIACCESS I ATA I I I I DOOR I REF. -------------------------------------------------------------------------------
SLAT AND FLAP CONTROL LEVER 114VU 27-51-43 21CV SFCC1 85VU 127 824 27-51-34 22CV SFCC2 86VU 128 824 27-51-34 25CV PCU VALVE BLOCK 1 148 27-84-53 26CV PCU VALVE BLOCK 2 148 27-84-53 28CV FEEDBACK POSITION PICK-OFF UNIT 148 27-81-19 31CV ASYMMETRY POSITION PICK-OFF UNIT 522 522UB 27-81-18 32CV ASYMMETRY POSITION PICK-OFF UNIT 622 622UB 27-81-18 35CV WING TIP BRAKE 522 522SB 27-81-51 36CV WING TIP BRAKE 622 622SB 27-81-51 51CV COMMAND SENSOR UNIT 114VU 220 811 27-51-17 90CV RELAY 187VU 121 92CV RELAY 188VU 122 94CV RELAY 187VU 121 96CV RELAY 188VU 122
3. System Description
__________________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
A. Mechanical Input
The slat/flap control lever is installed in the cockpit on panel 114VU. There are five possible positions for the lever (identified as 0,1,2,3 and FULL). The lever position to the related flight phase, flap angle and the slat angle is as follows:
**ON A/C 301-399,
A. Mechanical Input
The slat/flap control lever is installed in the cockpit on panel 114VU.
There are five possible positions for the lever (identified as 0,1,2,3
and FULL).
The lever position to the related flight phase, flap angle, inboard and
outboard tab angle and the slat angle is as follows:
Component Location
Figure 001
1EFF : ALL 1 27-81-00 Page 3
1 1 Feb 01/98
1 1
1CES 1
Component Location
Figure 002
1EFF : ALL 1 27-81-00 Page 4
1 1 Feb 01/98
1 1
1CES 1
R Slat System Electrical Equipment - Component Location Figure 003
1EFF : ALL 1 27-81-00Page 5 1 1 Aug 01/05 1 1 1CES 1 **ON A/C 001-049, 051-099, 101-149, 201-299,
-------------------------------------------------------------------------------LEVER FLAP SLAT POSITION FLIGHT PHASE ANGLE (deg) ANGLE (deg) -------------------------------------------------------------------------------
0 Cruise 0 0
1* Hold (Lowspeed) 0 18
1* Take-off 10 18
2 Take-off 15 22
3 Take-off /Approach 20 22
FULL Land 35 27
* Flap auto-command function -------------------------------------------------------------------------------
R **ON A/C 151-199, 401-499,
0 Cruise 0 0
1* Hold (Lowspeed) 0 18
1* Take-off 10 18
2 Take-off 15 22
3 Take-off /Approach 20 22
FULL Land 40 27
* Flap auto-command function -------------------------------------------------------------------------------
**ON A/C 301-399,
-------------------------------------------------------------------------------LEVER FLIGHT FLAP TAB TAB SLAT POSITION PHASE ANGLE ANGLE ANGLE ANGLE
INBOARD OUTBOARD
-------------------------------------------------------------------------------0 Cruise 0 0 0 0 1* Take-off 0 0 0 18 1* Take-off/Approach 10 5.4 6.2 18 2 Take-off/Approach 14 8.4 9.7 22 3 Take-off/Approach 21 13.6 15.8 22
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