Originally Posted by
Bergerie1
silverstrata,
MCAS is not an anti-stall device. It neither detects the stall nor acts as a kind of stick pusher. It is there to maintain the correct longitudinal stability in order to meet the certification requirements.
Sorry, MCAS has little or nothing to do with longitudinal stability, and everything to do with stall avoidance. That is why it monitors AoA, and operates at high AoA angles (ie: at the stall). The Boeing info on MCAS says:
MCAS (Maneuvering Characteristics Augmentation System) is implemented on the 737 MAX to enhance pitch characteristics with flaps UP and at elevated angles of attack. The MCAS function commands nose down stabilizer to enhance pitch characteristics during ... flaps up flight at airspeeds approaching the stall.
Is that clear enough for you?
Silver
P.S. Goneforgotten - read my post again. It matters not what the control surfaces on the Trident are - you still have a choice, whether to put a stall avoidance system on the control column or on the trimmer. Most aircraft choose the control column, while Boeing chose the trimmer. But as I said in my post above, there are potentially grave problems with choosing the trim system. Read what I said.
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