Originally Posted by
HeliComparator
Jwscud, out of interest do some modern fixed wing have flight envelope protection whereby autothrottle is automatically engaged if airspeed is reducing too much, for example due to too high a pitch attitude or vertical speed demand for the power set?
Depending on various modes and settings, a Boeing auto thrust system is included in the flight envelope protection, but there are various modes in which this is inhibited. See
http://www.pprune.org/tech-log/51864...rust-hold.html
I believe the Airbus system is more simple, with the envelope protection system on roll / yaw / pitch only (and it has quite a different auto-thrust philosophy).