Simviation Forum - Aircraft.cfg and Aircraft Editor

May 11^th, 2003 at 3:33pm

HABU Offline
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For my current project I have been researching all the data required for the Aircraft Editor modification of an air file. I inputted the data all the data I could find yet the aircraft behaves completely different than it should even with correct figures? Cry

How does everyone else manage to get their aircraft flyable without using incorrect data? Sad

Help!!

PS. Any good tutorials for .cfg or .air? Roll Eyes

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Reply #1 - May 11^th, 2003 at 3:50pm

Felix/FFDS Offline
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Check the " Flightsim Design Programs" thread for the link to the avhistory/mudpond flight dynamics site.

Felix/FFDS

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Reply #2 - May 11^th, 2003 at 10:16pm

Brett_Henderson Ex Member
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I've found so many "grey" areas in the "black-box" we know as the .air file...

The most puzzling is the required entry of MOI's...After all, every piece of data needed to compute the MOI's is already there..why on earth you're allowed to enter a number that over-rides how the plane should/would hadle is beyond me...

I just play with the file until it "feels" right, without getting outlandish..

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Reply #3 - May 13^th, 2003 at 2:00pm

HABU Offline
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Thanks guys, I'm heading to that link in a sec Felix!

One day they'll make it simpler..... ! Roll Eyes

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Reply #4 - May 22^nd, 2003 at 10:37am

IanK Offline
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Hi,
I was starting a FAQ but look at:

Air File Editors
http://perso.wanadoo.fr/hsors/FS_Soft/fsairfile.html

Air File Board, post March 2003
http://www.avhistory.org/scripts/MegaBBS/logon.asp

Aircraft Performance Data
http://perso.wanadoo.fr/hsors/FS_Soft/acftdata.html

Ian

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Reply #5 - May 22^nd, 2003 at 12:04pm

Felix/FFDS Offline
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I've made this posting a "sticky" because the links Ian posts are definite gateways to learning more on flight dynamics.

Felix/FFDS

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Reply #6 - May 22^nd, 2003 at 12:19pm

Holger Sandmann Guest

Howdy:

two things I'd like to add to this thread -

1. Tom Goodrick's excellent flight dynamics essay has helped me a lot to get rid of annoying AC behavior, particularly with respect to MOI and spring loading factors (bouncing on the ground). Here's the URL:

http://www.flightsimdownloads.com/pub/FlightDynamics.pdf

2. In my experience, it's better to edit the aircraft.cfg file than the .air file. Contrary to the claims in the MS Aircraft Container SDK, it's the aircraft.cfg file settings that take precedence. Case in point: I have "built" flight dynamics files for AI helicopters (soon to be uploaded) that ended up with two changes to the host .air file (braking strength and a second engine) and the other 99% of changes to the aircraft.cfg file.

Cheers, Holger

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Reply #7 - Jun 13^th, 2003 at 3:31am

plainsman2 Offline
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I would be happy to help if you arew working on something i am familiar with? I am not much help on the Mach 1.3+ stuff. I know from working with a few folks on some projects, the no wing all thrust aircraft are tough to model (F104 comes to mind).
Please let me know if I can help.
Bob

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Reply #8 - Oct 10^th, 2003 at 3:23pm

Deltawing Offline
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Quote:

I've found so many "grey" areas in the "black-box" we know as the .air file...

The most puzzling is the required entry of MOI's...After all, every piece of data needed to compute the MOI's is already there..why on earth you're allowed to enter a number that over-rides how the plane should/would hadle is beyond me...

I just play with the file until it "feels" right, without getting outlandish..

The thing about the MOIs is wrong. The air files do nop have nearly enough information to calculate the MOIs. In order to calculate MOIs accurately, you need to know the position and mass of every square inc of the aircraft. Perfect MOI calculation requires knowing exactly what each part of an aircraft is made of, the density of each material, and a helluva lot of integration. The best you can do is estimate, and computers are crap at estimation; they either know something or they don't.

Keep the blue side up&& D'wing&&

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Reply #9 - Oct 25^th, 2003 at 5:43pm

Qantas_B747 Offline
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Hi i am a 12 year old kid and probably the best kid and flying and landing on fs 2002. i just came to ask if anyone noes which program is the best to create planes that i can download st simviation

Thanks Tim

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Reply #10 - Oct 26^th, 2003 at 10:21pm

Felix/FFDS Offline
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Quote:

Hi i am a 12 year old kid and probably the best kid and flying and landing on fs 2002. i just came to ask if anyone noes which program is the best to create planes that i can download st simviation

Thanks Tim

Tim - you can fly but you can't read ....

Check the "Flightsim Design Programs" topic.

Felix/FFDS

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Reply #11 - Mar 28^th, 2004 at 11:16am

GooseSDE Offline
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Hey all.....

Didn't really know where to post this, but I downloaded an excellent F4U, but the Aircraft wants to constantly pitch up, and turn right all the time. Which part in the Aircraft.cfg can i edit to change such characteristics. Thanks for your time.

Goose

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Reply #12 - Apr 2^nd, 2004 at 8:59am

IanK Offline
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Honey, where'd you park
my Harrier?

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Hello Goose ,
please don't post on this thread as it is a fixed meaasge for general info. It's best to start a new thread with a simple question in the subject line so there is more chance of someone answering it.

No, probably not the .cfg file. Depends how you got the model. Ask the maker if they get the same problem. It may just be your stick controller is not calibrated to centre with zero outputs.

Ian

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