曝光台 注意防骗 网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
SPOILER SYSTEM/FCU INTERFACE
The spoiler system operation is under control of two FCUs which have dual modules to control and monitor the spoiler surfaces in pairs. The FCUs receive input from various airplane systems and schedule the MFSs either symmetrically or proportionally depending on airplane configuration. The FCUs also control and monitor the operation of the GS through valves within the ground spoiler selector valves. Refer to the SPOILER CONTROL AND MONITORING this Chapter.
The FCUs control the priority of spoiler operations for flight and ground phases of operation and spoiler system malfunctions are reported on the EICAS system.
The FCUs interface with the following systems for spoiler control and monitoring:
.
BCU . Brake Control Unit provides wheel speed for Ground Lift Dumping (GLD) logic.
.
LGECU . Landing Gear Electronic Control Unit provides Weight-On-Wheels (WOW) for GLD logic.
.
DAUs . Data Acquisition Units provide hydraulic pressure data.
.
ADCs . Air Data Computers provide airspeed data.
.
RA . Radio Altimeter provides height for GLD.
.
TQ . Throttle Quadrant assembly provides left and right throttle lever position sensors for GLD logic.
.
SFCU . Slat/Flap Control Unit provides flap position for Proportional Lift Dumping (PLD).
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
SPOILER FCU INPUT SCHEMATIC
ROLL ROLL
SEL SEL
PLT CPLT
ROLL ROLL
GND LIFT
DUMPING
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005
SPOILER CONTROL AND MONITORING
Spoiler control and monitoring of the MFS and ground spoilers are as follows:
Multi-Functional Spoilers
The MFS PCUs are hydraulically powered and electrically controlled. The FCU controls each PCU servo valve and uses an integral sensor to determine their position. The PCUs incorporate a hydraulic lock to prevent upfloat in the event of a hydraulic failure. The MFS surfaces use a proximity sensor to detect that the surface is retracted.
The FCU provides monitoring of the PCU command, PCU response to the command, spoiler surface through the proximity sensor and detection of interface electrical failures.
When a MFS panel failure is detected, the opposite panel will automatically be disabled, in order to ensure lift dumping remains symmetrical.
Ground Spoilers
An electrically controlled ground spoiler selector valve is used to provide hydraulic pressure to single actuators (at each panel), to either retract or extend a left or right pair of ground spoilers.
The FCU must energize two valves within the ground spoiler selector valve for a pair of ground spoilers to deploy. Proximity sensors are used for monitoring and indication and to detect whether a ground spoiler panel is retracted or not.
中国公务机网 www.gongwuji.com
公务机翻译 www.aviation.cn
本文链接地址：庞巴迪环球5000公务机机组操作手册 Bombardier Global-飞行操纵(21)
| 
