PPRuNe Forums - View Single Post - MCAS ALTITUDE V ATTITUDE ??
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Old 15th Mar 2019, 22:10
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Vessbot
 
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Originally Posted by gums
Salute!

O.K., Vessbot. Show us the source code that uses altitude to determine the AoA and not the Mach value/gain for the application of trim value, rate and such.

The available documents show AoA as the main driver once flaps up, and Mach determines the gains that the FCC uses to move the stab. FCeng84 has explained this before, as has Bjorn.
You misunderstood my post. The threshold is determined by Mach, which is a function of airspeed and temperature. This can also be said to be airspeed and altitude. As altitude does not strictly relate to temperature this is not strictly correct, but it's a good enough approximation for a general description for a lay reader, which is why it's written on B737.org.uk; and I'm clearing up CONSO's confusion between that use of "ALTitude" and his perceived contradiction between that and pitch ATTitude which is referenced in a completely different document that he quoted.
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