PPRuNe Forums - View Single Post - AF 447 Thread No. 9
View Single Post
Old 19th Jul 2012, 08:32
  #575 (permalink)  
AlphaZuluRomeo
 
Join Date: Nov 2010
Location: FR
Posts: 477
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by HazelNuts39
Again, I may well be completely wrong, but my interpretation of "limited pitch rate feedback" would be that the alternate law value of 'a' is different from normal law.
OK thanks again
As I said earlier, I'm not that fond of maths. Would you be so kind as to "translate" what impact will a different 'a' value have (in AF447 scenario, and/or in general)?

Originally Posted by HazelNuts39
I believe I've read somewhere that the different laws only affect the flight control system interpretation of side stick inputs. The autopilot commands are processed outside of the laws. Protections override side stick as well as A/P commands.
Yep, read that too. A/P issues deflection orders directly, sidesticks issue manoeuver demands which are translated into deflection orders by the flight controls computers/laws.

Regards.
AlphaZuluRomeo is offline