trying to fly straight (am i doing something wrong?)

[florismulock]

Thanks a lot for the information guys. awsome!  those picture how to adjust really helped!

ow i clicked the scenario IRS loss,   not sure why the antiskid is connected to the irs though

[Jeroen Hoppenbrouwers]

The antiskid works by comparing the rotation rate of individual wheels to the ground speed of the aircraft. After correction for tire size and compression, a certain rotation speed is required for the tires to not skid. To measure the aircraft ground speed, you need the IRS.


Hoppie

[Holger Wende]

Hi floris,

I am not a real world pilot, but one major thing I had to learn when flying PSX (and its predecessor PS1) was, that these big jets are "flown by numbers", i.e. the pilots know really well e.g. which thrust settings are required for different flight phases, altitudes, weights etc. Only then small changes are sufficient to maintain an attitude.
Without knowing these numbers a lot of iterative control inputs are needed to stabilize the attitude.

Learning was and still is hard (for me at least).
When learning new flight phases I use medium weight, program a few related legs or use the MCP to maneouver a bit... Then I monitor and note e.g. related N1 or EPR settings and observe what's happening in the sim, i.e. how does the autopilot fly this scenario.
Then I repeat the same scenario manually using my notes...

The PSX Tutorials (http://aerowinx.com/board/index.php?board=7.0), particularly BritJets "Trainings Videos" (http://aerowinx.com/board/index.php?topic=2583.0) and Jons "More Tutorial Videos" (http://aerowinx.com/board/index.php?topic=3895.0) are extremely helpful for me.
These videos explain very well what to focus on.
I excercise the circuits again and again, it's challenging but my flying skills improve, slowly but steadily 
I am never happy with my circuits, if almost everything ran fine I'm sure touchdown was late or slow...

The 744 has a huge inertia, the engines are terribly powerful. All controls need the right level of sensitivity and some anticipation.

Regards, Holger

[florismulock]

great idea!!!

but you sure that when the autopilot adjusts the trim the adjusted trim value is showed? (not that the autopilot keeps it for himself? lol)

[Hardy Heinlin]

The trim indicator shows the actual surface angle of the horizontal stabilizer. No matter whether the crew or the autopilot trims it, the trim indicator shows what's going on. The autopilot hides no secrets in the trim system.

[Jeroen Hoppenbrouwers]

The whole autopilot and autothrottle system is designed so that it sets up the aircraft for steady state. This is both a safety feature and an intuitive feature: if the autopilot/throttle stops (failure, disengage, ...) the aircraft basically does not change what it was doing.

Try this: set up a straight and level flight, with no winds. Use HDG SEL and ALT SEL modes and SPD on the A/T. Let the machine trim and adjust the throttles until it drives over rails.

Then disconnect both A/P and A/T.

The airplane now should continue on the rails. Stab trim set, throttle set and adjusted, no control surface inputs required (for a while). When it eventually starts to drift away from the magenta bugs, a tiny correction should reverse the trend. Do not retrim, no not touch the throttles.


Hoppie