Normal law Flashcards
High speed protections
Prims adjust elevator nose up
speed warning at VMO +4
max speed VMO + 15 stick free
B bank limited to 45 degrees
S spiral stability reduced to 0 - (stick rolls to 0 not 33)
A Auto pilot disconnects
P pitch trim frozen
AOA protections
Prims adjust/restrict elevator movement
Once inside below alpha Protection. SS commands AOA
A prot = max aoa stick free
A max = max aoa full stick
A floor commands full toga prior to A max
Stick full back gives you A max, if stick is released, it maintains A prot.
B bank limited to 45
S speed brakes retract
A auto pilot disconnects
P pitch trim limited to nose down only (current setting - 2 degrees ND)
Low energy warnings
Speed Speed Speed repeated every 5 seconds
Available in config 2, 3 or Full
Functions between 2000 and 100ft RA
Inhibited when:
Alternate or direct law
Toga selected
Alpha floor or GPWS alert triggered
Roll rate
Max roll rate of 15 degrees per second with side stick at the stop
spoilers ailerons and rudders all involved in the coordination.
Ground mode
Prior to takeoff the sidestick commands direct law
After takeoff the flight mode is blended in.
Flight mode
In flight normal law is commanded with associated protections.
Flare mode
Passing 100ft in descent flare mode activates. During the flare, normal law slowly blends to direct so that at 50 ft a slight nose down is commanded. The trim is frozen. The sidestick still commands roll rate in bank.
Indications
Green = at 30 NU / 15 ND / 67 bank. Airspeed has VLS and A prot (amber and black)
Green = at VMO + 4
SS commands
Norm
Alt 1 Alt 2
load factor/ roll rate - norm and alt 1
Alt 2 : load factor - aileron control
Load factor protections
PRIMS adjust/ restrict elevator movement
Max clean 2.5 - 1
dirty 2 - 0
THS limited current setting to 2 degrees nose down
Pitch
PRIMS adjust and restrict elevator movement.
max 30 nose up (25 for low speed)
15 nose down
Bank Angle
0-33 pitch trim auto - bank maintained
33-67 - static spiral stability back to 33 ( stick free)
nose will start to fall
full side stick holds 67
FD goes away past 45 and comes back at 40.
Max bank limited to 45 when in high speed or high AOA
maneuver load alleviation
Uses splrs+ails+elvs to reduce load on outer wing when > 2G and clean config >250 kts