Protections Flashcards
Explain flare mode
Normal law
50’ pitch attitude is memorised (trim frozen)
30 ft A/c trims forward 2 deg/sec over 8 sec
Pilot had to flare
Normal law
Bottom of the speed tape
VLS (orange line)
v alpha prot (orange broken)
V alpha max (red)
Highest and lowest FCU sel speeds
399-100
Autothrust protection speed
With autothrust in, speed won’t go above VMO MMO, or below VLS
Load factor limiter purpose
Restricts nose up/down imputes to maintain aircraft structural limits
When does G meter come on and where?
Lower ECAM
> 1.4G
<0.7G
Clean load factor limits
+2.5G
-1G
Flaps extended load factor limits
+2G
0G
Pitch attitude protection
Conf 0-3
Conf full
Conf 0-3 30deg nose up
Conf full 25deg nose up
(5 less low speed)
Nose down -15deg
Pitch attitude protection:
side-stick demands
> 30 NU nose up no effect, nose down avail
-15 ND nose up avail, nose down no effect
1G stall happens at V alpha what?
V alpha max
Where is alpha prot range and what happens?
Alpha prot to alpha max
Side-stick directly proportional to alpha
What happens during high alpha prot when you release sidestick
Speed returns to alpha prot
Alpha prot - something to consider?
AP disconnect if alpha prot active
How to deactivate high alpha prot
Push side-stick forward 8deg for >0.5sec
High speed protection overview
Aircraft will pitch up
TBC
Can you override high speed protection?
Yes
Traffic TCAS RA scenario
Eventually, but aircraft won’t over stress, sidestick input will be reduced to zero
Over speed threat
Won’t hear AP disconnect, overspeed warning takes priority
KNOW YOUR FMA!
Normal law max bank angle
67 deg
67 deg angle of bank, release side stick what happens?
Goes back to 33 deg AOB
> 33 deg AOB pitch considerations
No pitch compensation
Aft SS will be required
High speed prot
Max Bank angle
Why?
What happens release side stick
Max bank angle 40 deg
Due to LOAd FACTOR
Roll back to neutral
High alpha
Max bank angle
45 degree max bank angle
No return to zero
Bank angle when doe FD disappear and reappear?
45 back at 40
