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┃ A~7-~'M" A321 ┃ ┃ ┃ ┃
┃ FLIGHT CREW OPERATING MANUAL ┃ ┃ ┃ ┃
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LATERAL CONTROL
When the aircraft flying in pitch alternate law, lateral control follows the roll direct law
associated with yaw alternate or mechanical.
ROLL DIRECT LAW
See page 6.
YAW ALTERNATE LAW
Only the yaw damping function is available. Damper authority is limited to _+ 5~ of rudder
deflection.
REDUCED PROTECTIONS
LOAD FACTOR LIMITATION
The load factor limitation is similar to that under normal law
PITCH ATTITUDE PROTECTION
There is no pitch attitude protection. Amber Xs replace the green double bars "=" on the
PFD.
┏━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━━━━━┓
┃I ~-~ A318 ┃ FLIGHT CONTROLS ┃1.27.30 P 5 ┃
┃ aw aw ,, ~L,~ A319 ┃ ┃ ┃
┃ Lli,~ A320 ┃ ┃ ┃
┃ ┃ ┣━━━━┳━━━━┫
┃ A~7-~'M" A321 ┃RECONFIGURATION CONTROL LAWS ┃SEQ 001 ┃REV 32 ┃
┃ FLIGHT CREW OPERATING MANUAL ┃ ┃ ┃ ┃
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R LOW SPEED STABILITY
An artificial low speed stability replaces the normal angle-of-attack protection. It is
available for all slat/flap configurations, and the low speed stability is active from about 5
knots up to about 10 knots above stall warning speed, depending on the aircraft's gross
weight and slats/flaps configuration.
A gentle progressive nose down signal is introduced, which tends to keep the speed from
falling below these values.
The system also injects bank-angle compensation, so that operation effectively maintains
a constant angle of attack.
In addition, audio stall warnings (crickets + "STALL" synthetic voice message) is activated
at an appropriate margin from the stall condition.
The PFD speed scale is modified to show a black/red barber pole below the stall warning.
The c~ floor protection is inoperative.
VI_S
STALL WARNING (VSW)
R HIGH SPEED STABILITY
Above VMO or MMO, a nose up demand is introduced to avoid an excessive increase in
speed. The pilot can override this demand.
In addition, the aural overspeed warning (VMO + 4 or MMO + 0.006) remains available.
BANK ANGLE PROTECTION
Not provided
Note : The AP will disconnect, if speed exceeds VMO/MMO, or if the bank angle exceeds
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本文链接地址：
AIRBUS A320 Flight Crew Operating Manual3(91)
