A320 Protections - G Load
Good evening,
*The normal law protects the aircraft throughout the flight envelope, as follows :
‐ load factor limitation
‐ pitch attitude protection
‐ high-angle-of-attack (AOA) protection
‐ high-speed protection.
The side-stick commands a g load request.
*LOAD FACTOR LIMITATION
The load factor is automatically limited to:
+2.5 g to -1 g for clean configuration.
+2 g to 0 for other configurations.
PITCH ATTITUDE PROTECTION
Pitch attitude is limited to :
‐ 30 ° nose up in conf 0 to 3 (progressively reduced to 25 ° at low speed).
‐ 25 ° nose up in conf FULL (progressively reduced to 20 ° at low speed).
‐ 15 ° nose down (indicated by green symbols “=” on the PFD’s pitch scale).
The flight director bars disappear from the PFD when the pitch attitude exceeds 25 ° up or 13 ° down. They return to the display when the pitch angle returns to the region between 22 ° up and 10 ° down.
Ok so we are in configuration 0.
I pull the side-stick FULL AFT. I am basically demanding 2.5g
So the plane will reach 2.5g but I know that trim stops at 1.3g
Now comes Pitch Angle Protection. Can anyone explain what happens next to our G load? How does the plane react? What about trim?*
Let's say that High AoA protections are not available for the moment....
Thanks a lot,
A.Roy