PPRuNe Forums - View Single Post - A320 Flight control law Landing Mode
View Single Post
Old 6th Apr 2020, 09:22
  #31 (permalink)  
sonicbum
 
Join Date: Mar 2012
Location: Having a margarita on the beach
Posts: 2,423
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by hikoushi
It simply goes into the equivalent of direct law in pitch at 100 feet, and auto trim stops. Essentially natural longitudinal stability and pitch/power couple take care of the same thing the original flare mode was trying to accomplish. Some of the earlier NEOs without the most current ELAC mod still have the old flare law. You can definitely feel the difference going from one to the other. Advantages of the newer software are much less susceptibility to excessive float if someone gets spooked and starts to flare above 50 feet, and a more natural feel in the landing, especially if using manual thrust (“just hold it till it hits, Hoss!”).
Hi hikoushi, thanks for the background info, always highly appreciated. Quick question on the A330 it is very similar but with a small difference regarding the last part of the statement : "At 50 ft, a slight pitch down elevator order is applied. Consequently, to flare the aircraft, a gentle nose-up action by the pilot is required."

I'm just curious about the magnitude of this "slight pitch down elevator" and this has changed with NEOs/800/ or the A350 ?

Thanks !


sonicbum is online now