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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(17)

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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Limiting
The A/T system provides speed and thrust envelope limiting. Thrust envelope limiting is based on the active EPR rating, while speed envelope limiting is based on minimum speed limits as well as placard and structural speed limits.
Monitoring
Monitoring is incorporated in the A/T system to ensure control integrity. The monitoring consists of validity, servo response and pilot override monitoring. Validity monitoring ensures that all parameters required for A/T control, during a specific phase of flight, are present and valid and detects engine out, engine reversion, thrust reverser deployment and internal faults. The servo response monitor compares the servo response with the commanded response to ensure the integrity of the servo control system. The pilot override monitor detects pilot movement of the thrust levers while the A/T system is engaged, to provide automatic disconnect of the A/T system.
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
A/T 1 or 2 Select
To select an A/T, select MENU twice on the MFD control Panel, then select AUTOTHROTTLE 1 or 2 by toggling and select ENT.

A/T Engagement/Disengagement A/T Engagement
The A/T system is engaged or armed to engage by toggling the A/T engage/disengage switch(es), located on either thrust lever.

Toggling the switches, while on the ground, during T/O phase, with the thrust levers less than 60% of max. thrust (23° TRA), will engage the A/T in an armed state. Subsequent advancement of both thrust levers above 60% max. thrust, while airspeed is less than 60 knots, will result in automatic engagement of the system into take-off thrust control, moving the thrust levers to the appropriate thrust settings.
Toggling the switches, while on the ground, with the thrust levers greater than 60% max. thrust, while airspeed is less than 60 knots, will engage the system directly into take-off thrust control.
Toggling the switches, while inflight, above 400 feet, will engage the system into a control mode which is compatible with the active AP/FD mode. In the event that no AP/FD mode has been selected, the A/T will engage into basic speed control mode.
Engagement is inhibited during a detected fault condition or during an invalid flight condition.
The A/T system can be disengaged manually and/or automatically.
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005

POWER PLANT
 
AUTOTHROTTLE SYSTEM (CONT'D) A/T Engagement/Disengagement (Cont’d) A/T Disengagement (Auto)
Automatic A/T disengagement will occur for any engaged or on-ground armed state, in the event of a detected system failure (abnormal disconnect) or when A/T control is inappropriate for the current phase of flight (normal disconnect) such as on the ground, following touchdown. The A/T annunciation will turn red and flash and an aural “AUTOTHROTTLE”is generated when the A/T is disengaged automatically or manually, however the aural “AUTOTHROTTLE”is inhibited following disconnect at landing.
 
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