Kit : the reason for the nose up trim is to avoid any handling dificulties in case of a/p disconect.The plane will have a nose up moment in case of a/p disconnect,which will help the pilot in case of G/A decision.
Also,for a failure- disconect bellow 30' ,the plane will flare by itself. Otherwise,when a/t retard thrust,you'll have a nose down moment,maybe a chance for 3 point landing.
The autopilot will have to reset this nose up trim,folowing a G/A ,before single channel can be engaged.
So,see ,this bias trim is not here cause the plane is not 'calculated' for autoland,is here to help the pilot in case of accidental disengagement of the a/p.
The point about systems,hydraulics,etc...is pure b..
,for your info almost all the planes have the same hyd press -around 3000 psi (except the 380-hygher press,around 5000 psi ,I guess)
The pitch thing my friend _loss of authority...,again b
.
No trim ,so a less nose up trimming-why you think the plane will stall
in case of G/A?
Trim or not trim the a/p will have the same commands,nose up 15 deg,then after sufficient Vs ,follow the speed for flap.
Again,the tolouse remark -you a bus one.
And the fact about plane designed to autoland...
,I guess you're not a pilot.Sorry.
We can talk for hours about aerodynamic,design,wings,etc...there is no plane designed (or not) to autoland.Point.
What about the 380,or 747 ,are thouse designed to autoland?
.....As I said,you're not a pilot!
Brgds....