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庞巴迪环球5000公务机机组操作手册 Bombardier Global-动力装置(23)

时间:2011-11-11 09:42来源:蓝天飞行翻译 作者:公务机 点击:
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Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2

POWER PLANT
 
Thrust Reverser
The thrust reverser is powered by hydraulic system #1 for the left reverser and hydraulic system # 2 for the right reverser and is controlled by the EEC and electrical signals from the airplane.
The hydraulic system comprises:
.
Isolation Control Unit . controlled by the EEC.

.
Directional Control Unit . controlled by electrical signals.

.
Primary Lock Actuators . lock both upper and lower doors.

.
Door Actuators . One for each door.


The electrical system comprises:
.
Tertiary Locks . one for each door, feedback signal to cockpit.

.
Stow Switches . two per door, stow signal feedback to EEC.

.
Linear Variable Transformer (LVT) . one per door, LVT signals door position to EEC.

.
Maintenance Test Switch . allows thrust reverser deployment without engine operating.

 

Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005

POWER PLANT
 
Reverse Thrust Operation

Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
POWER PLANT
 
Reverser Components
UPPER DOOR
UPPER ACTUATOR
UPPER TERTIARY LOCK

PRIMARY LOCKLEVER
AND ACTUATOR

LVTS
DIRECTIONAL CONTROL UNITLOWER TERTIARY LOCK PRIMARY LOCKLEVER AND ACTUATOR

NOTE
LOWER DOOR THE ISOLATION CONTROL UNIT IS FRAME MOUNTED
LOWER ACTUATOR (NOT INSTALLED)
Isolation Control Unit
The isolation control unit controls the hydraulic system pressure to the thrust reverser system.
Directional Control Unit
GF1810_066
The directional control unit control hydraulic pressure to the upper and lower door actuators to provide the deploy force.
A pressure switch sends a signal to the directional control unit and through the directional control unit to the upper and lower door actuators. This causes an overstow of the doors to enable unlatching of the primary locks.
STOWED OVER.STOW
GF1810_067
Volume 2 Flight Crew Operating Manual
Rev 2A, Apr 11, 2005
Directional Control Unit (Cont’d)
The unit contains the directional control valve which is controlled by a solenoid valve. The solenoid valve is controlled from thrust lever microswitches and WOW and wheel spin up signals. When the solenoid is energized, a deploy valve opens allowing hydraulic pressure to sequentially release the two primary locks (hold doors closed during flight).

GF1810_068
Through the WOW or wheel spin up signal two tertiary locks (prevent uncommanded thrust reverser deployment) will retract and move the directional control valve to the deploy position.

Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
Reverse Thrust Levers
The reverse thrust lever microswitches and interlock baulk switches will not allow the engine to increase reverse thrust, until the upper and lower doors are fully deployed. REV icons are displayed on N1 display, to indicate position of doors and reverser status.
 
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