曝光台 注意防骗
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Maximum elevator deflexion and extern load factor
THE CG AND TRIM POSITION
Applicable to: ALL
IN FLIGHT
In flight, on all fly-by-wire aircraft, the position of the pitch trim surface automatically adjusts in order to maintain the flight path with no deflection of the elevators.
The position of the pitch trim surfaces that is required to maintain Flight Level depends obviously on the center of gravity of the aircraft. However, it also depends on several other parameters, such as altitude, speed, aircraft weight and aircraft configuration
TAKEOFF
For takeoff, the pitch trim surface must be set to an appropriate position depending on the CG. This is done automatically on A340-500/600, A330/A340 Enhanced (with specific aircraft definition) and aircraft equipped with the automatic trim setting function . It is set manually on others models.
Setting the pitch trim on ground, before takeoff, provides consistent rotation characteristics and a trimmed aircraft at V2 +10 kt. The setting results from a compromise, because the rotation
characteristics and the trim at V2 +10 kt do not only depend on the CG, but are also a function of the flap configuration, thrust and V2.
However, the takeoff trim setting must also be limited, in order to cover required abuse cases at takeoff. These limitations define the green band.
SUPPLEMENTARY INFORMATION
CENTRE OF GRAVITY
Take off trim vs aircraft CG
The above graph indicates the recommended TO trim, according to the CG The TRIM/CG relationship is indicated on the pitch trim wheel scale. It applies only at takeoff.
SUPPLEMENTARY INFORMATION
TCAS
TECHNICAL BACKGROUND
Applicable to: ALL
GENERAL
A Traffic Alert and Collision Avoidance System (TCAS) provides the flight crew with traffic information and warnings of potential conflicts with vertical avoidance instructions. The TCAS can only detect and indicate other traffic, that is equipped with a transponder.
The ND displays the traffic information, together with:
? The bearing and range to the intruder
? The intruder closure rate
? The relative altitude difference.
If the TCAS considers the intruder to be a potential collision threat, it generates a visual and aural Traffic Advisory (TA). If it considers the intruder to be real collision threat, it generates a visual and aural Resolution Advisory (RA).
1 INTRUDER CLASSIFICATION
Intruder
Display Type of
collision threat Aural warning Crew action
No threat
traffic or others No threat - -
-17(w)
Proximate Consider as
No threat - -
-10(w)
Traffic
Advisory (TA) Potential threat "TRAFFIC TRAFFIC" Establish visual contact.
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本文链接地址：A330/A340 机组训练手册 FCTM Flight Crew Training Manual 2(73)
