PPRuNe Forums - View Single Post - AF447
Thread: AF447
View Single Post
Old 31st Jul 2009, 00:52
  #4037 (permalink)  
Graybeard
 
Join Date: Nov 2006
Location: SoCalif
Posts: 896
Likes: 0
Received 0 Likes on 0 Posts
AOA just Along for the Ride

AOA is the best indicator of stall. Why airliners haven't used it as primary stall warning just puzzles me. Stalling airspeed varies with bank angle and wing loading, but AOA is just that, Angle of Attack, the exact meaurement of stall margin, regardless of bank angle and wing loading.

The stall warning detector on the basic Cessna 150 is a binary AOA device, independent of pitot pressure. Why did the airliners give up that simple redundancy?

GB
Graybeard is offline