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Old 12th Jul 2008, 06:33
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Bula
 
Join Date: Sep 2003
Location: Dunnunda
Posts: 496
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A320 Autopilot Pitch Envelope

G'day All,

Just a couple of A320 questions for the Technically savy A320 dirver among us.

1. When the AP is engaged it is allowed a 1.3g limit (and from what i understand) this is 1.4g in expedite mode.

Approaching high speed protection @ VMax the high speed protection pitches up and reduces side stick authority to maintain Vmax, with O/SPEED triggering at VMax + 4. Does the AP have a authority of 1.3g + 0.75g or 1.4 + 0.75g or 2/2.5g prior to being disconnected with the highspeed protection at > VMax

2. In expedite climb with during light windshear the airspeed begins reducing towards Vls.

At what point does the Autopilot increase its authority to ensure a pitch down to maintain speed if the trend continues to reduce. The FCOM from what I can see makes no specific reference to the specific G authority of the Autopilot. Does anyone have a reference?
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