PPRuNe Forums - View Single Post - AF 447 Thread no. 4
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Old 29th Jun 2011, 22:51
  #561 (permalink)  
gums
 
Join Date: Jun 2009
Location: florida
Age: 81
Posts: 1,610
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AoA Protection

@a33z
Very good description of the "intent" of the AoA protection. It's what "protection" should be.

My question has to do with at least one reversion mode in which it appears the system establishes an AoA other than max and more than what is required for level flight. In other words, the gee bias is reduced as far as trimming to the normal pitch/roll-corrected one gee.

This action would appear to move the THS trim posiiton, with or without pilot holding other than neutral stick. So I question, "why not maintain the basic gee command and only use AoA only as a limit?"

Secondly, there are some very good reasons to use less than the AoA required for level flight - like recovering from a stall!

BTW, ol' Gums did not call the system "ridiculous", that was another contributor. I still feel the reversion laws could be streamlined and some work could be done with respect to "standby gains" when air data is unreliable.
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