Airbus Long Haul FMGS pre-calculated speed

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Hello,
in the tutorial flight of the Airbus A330-200 it is written that, passing 10.000 feet it is possible to left-click the speed knob and let the FMGS calculate the best climb speed for the given weight. 
In my experience this results in a speed around 190 kts, dangerously near to the stall speed in thin air with clean configuration, and anyway too low for a big jet.
Anybody had the same trouble?
Thank you in advance,
Valerio.

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Valerio320 Members Profile Send Private Message Find Members Posts Add to Buddy List Check-In Staff Joined: 18 Apr 2009 Points: 18	Post Options Post Reply Quote Valerio320 Report Post Thanks(0) Quote Reply Topic: Airbus Long Haul FMGS pre-calculated speed Posted: 08 Aug 2009 at 10:59am
	Hello, in the tutorial flight of the Airbus A330-200 it is written that, passing 10.000 feet it is possible to left-click the speed knob and let the FMGS calculate the best climb speed for the given weight. In my experience this results in a speed around 190 kts, dangerously near to the stall speed in thin air with clean configuration, and anyway too low for a big jet. Anybody had the same trouble? Thank you in advance, Valerio.

737Chris Members Profile Send Private Message Find Members Posts Add to Buddy List Chief Pilot Joined: 04 Apr 2009 Location: The Abyss Points: 2247	Post Options Post Reply Quote 737Chris Report Post Thanks(0) Quote Reply Posted: 08 Aug 2009 at 1:13pm
	I had this problem when I first got Airbus Series Vol.1 It happened because the default fuel loadout made the plane a few thousand pounds overweight. Check your fuel settings, you wont need to use max fuel anyway, just enough for the flight you are doing. Failing that check your passenger loadout etc. Might not be the reason why but it was for me
	Generic forum signature

TomA320 Members Profile Send Private Message Find Members Posts Add to Buddy List Chief Pilot Joined: 02 Apr 2008 Location: Perth Scotland Points: 10235	Post Options Post Reply Quote TomA320 Report Post Thanks(0) Quote Reply Posted: 08 Aug 2009 at 1:17pm
	Hi, I don't know much about the F-lite range as I don't use them but here are a few suggestions that might work, it depends on how well the FMGC is modled. On the climb page enter 250 as your speed and keep the speed selector to ---* this means the aircraft will hold 250kts. When past FL100 enter your ECON SPD, which should be predicted by the FMGC, normally somewhere arounds 290-330kts depending on CI. This means the aircraft should start to accelerate. I have made a tutorial for the A320, which will also work with the A330, but if your are using F-lite some of the functions may not work.