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GF1810_048
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
CSP 700.5000.6 18.10.37
POWER PLANT
Take-off Thrust Control Mode
The take-off thrust control mode is activated when the A/T is armed for engagement for take-off, airspeed less than 60 knots and both thrust levers are set above 23°, corresponding to 60% of maximum thrust. Once activated, the A/T will advance the thrust to the TO EPR rating. The A/T will control the thrust lever to the active EPR rating during take-off roll until the airspeed increases above 60 knots, at which time the take-off thrust hold control mode activates. Upon detecting an A/T mode transition, the new A/T mode indication will flash for 5 seconds.
On Ground below 60 knots, thrust T/O EPR. On Ground above 60 knots
The take-off thrust control mode re-activates at an altitude transition of 400 feet during the take-off climb-out. If a change to the active EPR rating, either by the crew or by automatic means, has occurred, then the A/T will control the engine power setting to the new active rating.
Take-off Thrust Hold Control Mode
The take-off thrust hold control mode is activated to ensure that no thrust reductions occur during take-off between the time the airplane transitions above 60 knots to 400 feet AGL.
The take-off thrust hold control mode de-activates as the airplane transitions through 400 feet AGL during take-off climb-out. Upon detecting an A/T mode transition, the new A/T mode indication will flash for 5 seconds.
In flight below 400 feet AGL In flight above 400 feet AGL
Volume 2 Flight Crew Operating Manual
Rev 2A, Apr 11, 2005
Take-off Thrust Hold Control Mode (Cont’d)
A/T T/O mode will remain enabled until 400 feet AGL. Following the 400 feet AGL transition, with A/T engaged, T/O mode remains active until a non T/O AP/FD mode activates. Upon detecting an A/T mode transition, the new A/T mode indication will flash for 5 seconds.
In flight TO mode selected on AP/FD In flight HDG and FLC selected on AP/FD
Flight Level Change Thrust Control Mode
The flight level change thrust control mode activates when the crew selects the AP/FD FLC mode or when the FMS engages the VFLC mode. The A/T selects the active upper/lower EPR rating for climb/descent.
The active upper and lower EPR ratings are either computed from the phase of flight or are pilot selected via an EPR rating menu.
For small flight level change climbs and descents, the A/T will provide thrust as appropriate to attain a programmed rate of climb/descent. The programmed rate of climb/descent is proportional to the magnitude of the selected altitude change. Full power climbs and full idle descents are commanded when the target climb/descent rate increases beyond the capability of the airplane for the active upper and lower EPR rating.
Flight Level Change mode
GF1810_052
When the selected altitude is captured, the thrust mode will automatically change to SPD mode. Upon detecting an A/T mode transition, the new A/T mode indication will flash for 5 seconds.
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本文链接地址：庞巴迪环球5000公务机机组操作手册 Bombardier Global-动力装置(19)
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