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On a normal takeoff, to counteract the pitch up moment during thrust application, the PF should apply half forward (full forward in cross wind case) sidestick at the start of the takeoff roll until reaching 80 kt. At this point, the input should be gradually reduced to be zero by 100 kt.
The PF should use pedals to keep the aircraft straight. The nosewheel steering authority decreases at a pre-determined rate as the groundspeed increases (no more efficiency at 130 kt) and the rudder becomes more effective. The use the tiller is not recommended during takeoff roll, because of its high efficiency, which might lead to aircraft overreaction.
For crosswind takeoffs, routine use of into wind aileron is not necessary. In strong crosswind conditions, small lateral stick input may be used to maintain wings level, if deemed necessary due to into wind wing reaction, but avoid using large deflections, resulting in excessive spoiler deployment which increase the aircraft tendency to turn into the wind (due to high weight on wheels on the spoiler extended side), reduces lift and increases drag. Spoiler deflection becomes significant with more than a third sidestick deflection.
As the aircraft lifts off, any lateral stick input applied will result in a roll rate demand, making aircraft lateral control more difficult. Wings must be level.
In case of low visibility takeoff, visual cues are primary means to track the runway centerline. The PFD yaw bar provides an assistance in case of expected fog patches if ILS available.
TYPICAL AIRCRAFT ATTITUDE AT TAKEOFF AFTER LIFT-OFF
Applicable to: ALL
At take off, the typical all engine operating attitude after lift-off is about 15 °.
NORMAL OPERATIONS
TAKEOFF
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL
ROTATION
Applicable to: ALL
Rotation is conventional. During the takeoff roll and the rotation, the pilot flying scans rapidly the outside references and the PFD. Until airborne, or at least until visual cues are lost, this scanning depends on visibility conditions (the better the visibility, the higher the priority given to outside references). Once airborne, the PF must then controls the pitch attitude on the PFD using FD bars in SRS mode which is then valid.
Initiate the rotation with a smooth positive backward sidestick input (typically 1/3 to 1/2 backstick). Avoid aggressive and sharp inputs.
The initial rotation rate is about 3 °/s. Avoid low rotation rates as this will have an impact on takeoff performance by increasing the takeoff ground run. Rotation rates between 2 °/s and 3 °/s will have a minimal impact on takeoff run but rates significantly below 2 °/s should be avoided.
If the established pitch rate is not satisfactory, the pilot must make smooth corrections on the stick. He must avoid rapid and large corrections, which cause sharp reaction in pitch from the aircraft. If, to increase the rotation rate, a further and late aft sidestick input is made around the time of lift-off, the possibility of tailstrike increases significantly on A321.
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本文链接地址：A318/A319/A320/A321 机组训练手册 FCTM Flight Crew Training Manual(65)
