WANTED... FDE Guru

[jetstar]

Hi All.

I need someone you can make FDE's for AI aircraft.
I have several AI models on the go but my FDE abilities leave a lot to be desired.

So if anyone can help or know somebody who can please leave a return posting.

Thanks.

Paul (who is fed up with seeing his models crash and burn!)

[tgibson]

Hi,

I don't have time to do any FDE at this point, but the idiot's guide (i.e. the way I do it) is:

Start with the closest default aircraft, like the 737.

1. Set the empty weight so the plane makes it's final aproach at the correct speed.

2. Increase power (HP or thrust) or wing area to get plane airborne sooner. Also, reduce the no flaps stall speed. I usually adjust the stall speed to get the right rotation speed, then the power to get the right climb out speed, and then the wing area to get the right point of rotation. But then changes in wing area will require changes in power, so you adjust these two (or three) back and forth until both rotation point and climb speed are correct.

3. Check the cruise speed at altitude and decrease the Cruise Speed and max mach variables if speed is too high. If the speed is too low, try increasing the Cruise Speed. If this has no effect then power is too low. Set Cruise Speed variable to desired value and increase power until it matches that speed. Then redo step 2, not decreasing power below what it is set to now (you can increase it though). This may force a compromise somewhere...

4. Adjust the minimum throttle (reverse thrust - early deceleration) and toe brake scalar (brakes - late deceleration) to get the correct landing roll length.

Note: each time you make a change, you will have to reload a flight or restart FS to load the new flight dynamics.

Hope this helps,

[jetstar]

Hi Tom.

There are some parameters I have not tweaked there so more to try.
She seems to take off and land OK (depending on which set of dynamics I use), but its the overshoot and turn which cause the problem.
As soon as she turns she looses height normally ending in tears.

Looks like its back to hours and hours of tinkering for me. ;D

Paul

[brianatevolveai]

Paul,

I can take a look for you.

Leave a message for me here - or PM me at evolveai (Brian)

Cheers
Brian

[jetstar]

Hi Brian.

Thanks for your offer.

If you send me a PM on this forum I'll get back to you.

Paul