Originally Posted by
HazelNuts39
I would be interested to know if the A-330 stall warning, for any given configuration, is triggered solely by the AoA signal, or that it depends on the airspeed (pitot) -signal.
So would I.
If this stall alarm is computed from AoA only (and not also the airspeed, the altitude, the aerodynamic configuration: flap ext.,...), maybe it is linked to the AoA law (the alpha prot) ? And then the next question is: how is the alpha prot computed ? Wouldn't the threshold "alpha prot" be a table depending on the flap configuration, airspeed and altitude ?
And if there is an indirect link between stall alarms & airspeeds (via the alpha prot values), in the Air Caraïbe case, there is a lag of 30 sec. between the CAS drop+sequence of FLRs and the stall alarm: maybe an underlying filtering process ?
Jeff
PS) Increasing Pilot's authority over automated systems via the AoA law:
http://www.pn.ewi.tudelft.nl/educati.../notes/loc.pdf